dcsimg

Comments ( İngilizce )

eFloras tarafından sağlandı
The name Juniperus mexicana Sprengel has been misapplied to this species. Reports of hybridization with J . virginiana and J . pinchotii have been refuted using numerous chemical and morphologic characters (R. P. Adams 1977).

Ashe juniper is a source of Texas-cedarwood oil and fence posts.

lisans
cc-by-nc-sa-3.0
telif hakkı
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliyografik atıf
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Description ( İngilizce )

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Trees dioecious, to 15 m, single-stemmed to 1--3 m, occasionally branching at base; crown rounded to irregular and open. Bark brown, exfoliating in thin strips, that of small branchlets (5--10 mm diam.) smooth, that of larger branchlets exfoliating in strips. Branches spreading to ascending; branchlets erect, 3--4-sided in cross section, ca. 2/3 or less as wide as length of scalelike leaves. Leaves dark green, abaxial glands hemispheric, raised (particularly obvious on whip leaves), exudate absent, margins denticulate (at 20´); whip leaves 3--6 mm, not glaucous adaxially; scalelike leaves 1--2 mm, not overlapping or overlapping to 1/4 their length, keeled, apex acute to obtuse, spreading. Seed cones maturing in 1 year, of 1 size, with straight peduncles, ovoid to nearly globose, 6--9 mm, dark blue, glaucous, fleshy and resinous, with 1(--3) seeds. Seeds 4--6 mm. 2 n = 22.
lisans
cc-by-nc-sa-3.0
telif hakkı
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliyografik atıf
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
kaynak
Flora of North America @ eFloras.org
düzenleyici
Flora of North America Editorial Committee
proje
eFloras.org
orijinal
kaynağı ziyaret et
ortak site
eFloras

Distribution ( İngilizce )

eFloras tarafından sağlandı
Ark., Mo., Okla., Tex.; Mexico.
lisans
cc-by-nc-sa-3.0
telif hakkı
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliyografik atıf
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
kaynak
Flora of North America @ eFloras.org
düzenleyici
Flora of North America Editorial Committee
proje
eFloras.org
orijinal
kaynağı ziyaret et
ortak site
eFloras

Habitat ( İngilizce )

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Limestone glades and bluffs; 150--600m.
lisans
cc-by-nc-sa-3.0
telif hakkı
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliyografik atıf
Flora of North America Vol. 2 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
kaynak
Flora of North America @ eFloras.org
düzenleyici
Flora of North America Editorial Committee
proje
eFloras.org
orijinal
kaynağı ziyaret et
ortak site
eFloras

Common Names ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
More info for the terms: shrub, tree

Ashe's juniper
mountain cedar
rock cedar
Ozark white cedar
post cedar
Mexican juniper
break cedar
brake cedar
Texas cedar
sabino
enebro
cedro
tascate
Texate


TAXONOMY:
The scientific name for Ashe's juniper is Juniperus ashei Buchholz.
(Cupressaceae). Ashe's juniper is thought to hybridize with Pinchot's
juniper (J. pinchotii) [19,30]. Adams and Kistler [3] summarized a number
of studies that investigated the report that Ashe's juniper hybridizes with
eastern redcedar (J. virginiana) [17,18]. They concluded that there was
no evidence of gene flow between the two species, even though their
ranges overlap and morphological intermediates exist. There are no
recognized subspecies, forms, or varieties of Ashe's juniper.


LIFE FORM:
Tree, Shrub

FEDERAL LEGAL STATUS:
No special status

OTHER STATUS:
NO-ENTRY




DISTRIBUTION AND OCCURRENCE
SPECIES: Juniperus ashei
GENERAL DISTRIBUTION:
Ashe's juniper has a limited range in southwestern North America.  It
occurs in disjunct populations in southwestern Missouri and Arkansas, in
the Arbuckle Mountains of southern Oklahoma, and in Coahuila, Mexico.
The main population occurs in west-central Texas, largely on the Edwards
Plateau [20,28,41].
bibliyografik atıf
Sullivan, Janet. 1993. Juniperus ashei. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available: http://www.fs.fed.us/database/feis/

Distribution ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
More info for the term: forest

Ashe's juniper has a limited range in southwestern North America.  It
occurs in disjunct populations in southwestern Missouri and Arkansas, in
the Arbuckle Mountains of southern Oklahoma, and in Coahuila, Mexico.
The main population occurs in west-central Texas, largely on the Edwards
Plateau [20,28,41].



Distribution of Ashe's juniper. 1971 USDA, Forest Service map digitized by Thompson and others [59].

bibliyografik atıf
Sullivan, Janet. 1993. Juniperus ashei. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available: http://www.fs.fed.us/database/feis/

Fire Management Considerations ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
More info for the terms: cover, fire management, forest, fuel, headfire, herbaceous, natural, prescribed fire, tree

Dead Ashe's juniper trees are highly volatile fuels and must be treated
with caution.  Firebrands can carry up to 400 feet (120 m), depending on
conditions, and can ignite spot fires, especially where there is a
preponderance of highly flammable dried animal dung.

Prescribed burning is rarely used alone on mature Ashe's juniper stands,
as there is usually not enough fine fuel to carry fire [34,52].  Wright
and Bailey [53], however, list it as a technique to convert dense stands
into more open stands.

Chained stands are the easiest to burn; herbicide-treated or treedozed
stands can also be successfully burned [34,52,53].  In order to carry
fire to ignite piles and burn seedlings, it is generally recommended
that there be a minimum of 1,000 pounds per acre (1,120 kg/ha) of fine
fuels, and 2,000 pounds per acre (2,240 kg/ha) of continuous fine fuel
is optimal [34,50,52,53].  The lower figure is not sufficient if it
consists of bunchgrasses.  Plots consisting of dozed or chained Ashe
juniper piles interspersed with grasses and Ashe's juniper seedlings may
be safely burned with a headfire into a 500 foot (150 m) fireline under
certain conditions [9,34,52,53].

Dalrymple [11] reported 100 percent mortality of individuals less than 2
feet (0.6 m) and 77 percent mortality of trees from 2 to 6 feet (0.6-1.8
m) tall after a prescribed fire in Okalahoma.  Less than 25 percent of
trees taller than 6 feet (1.8 m) were killed.  Juniper (Juniperus spp.)
trees in open stands can be individually ignited and burned using
propane or oil burners [44].

Some authors recommend windrowing of larger trees rather than dozing for
achieving crown fires.  With windrows, six trees are burned for every
tree pushed into standing tree lines [6,8].  Good tree to tree spread of
fire does not occur unless the trees are less than 26 feet (8 m) apart
[6].  Since leaf moisture is one of the most important variables for
satisfactory burning, Engle and Stritzke [12] tested the proposition
that an aerial application of paraquat could reduce foliage water
content and increase crown scorch during broadcast fires in tallgrass
prairie.  They found that the leaf water content was significantly lower
(p < 0.0001) for all applied levels of paraquat, and that large trees
were more damaged by the paraquat plus fire treatment than by fire alone
(p < 0.0319).  They conclude that paraquat can be used as a desiccant to
promote crown fires in closed-canopy stands of Ashe's juniper.

One of the major environmental concerns about the use of prescribed fire
for rangeland management is increased soil loss caused by the removal of
vegetation.  Wright and others [54] tested the effect prescribed burning
of Ashe's juniper had on erosion and found that for very gentle slopes (1
to 4 percent grade), there was very little soil loss, but on moderate
(15 to 29 percent) or steep (45 to 53 percent) slopes the losses
increased greatly.  The amount and duration of soil loss depended
largely on vegetative cover and slope.  The negative effects of burning
Ashe's juniper can be mitigated by artificially seeding moderate and steep
slopes. With adequate precipitation, the resulting ground cover can
reduce the amount of time needed to stabilize soils from 18 months to 3
months on steep slopes.  Total stabilization (i.e.  return to
pretreatment levels of soil loss) can be reduced from 42 months to 6
months, again with adequate precipitation [54].

A 10- to 40-year interval between prescribed fires is recommended to
maintain control of Ashe's juniper; a general rule of thumb is to burn
when Ashe's juniper trees are 4 feet (1.2 m) tall [33,34,38,53].


FIRE CASE STUDY
SPECIES: Juniperus ashei
FIRE CASE STUDY CITATION:
Sullivan, Janet., compiler. 1993. Effects of fire on Ashe's juniper in central Texas.
In: Juniperus ashei. In: Fire Effects Information System, [Online].
U.S. Department of Agriculture, Forest Service,
Rocky Mountain Research Station, Fire Sciences Laboratory (Producer).
Available: https://www.fs.fed.us
/database/feis/ [
var months = new Array(12);
months[0] = "January";
months[1] = "February";
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months[3] = "April";
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months[6] = "July";
months[7] = "August";
months[8] = "September";
months[9] = "October";
months[10] = "November";
months[11] = "December";
var date = new Date();
var year = date.getFullYear();
var month = date.getMonth();
var day = date.getDate();
document.write(year+", "+months[month]+" "+day);
].


REFERENCE:
Wink, Robert L.; Wright, Henry  A. 1973. Effects of fire on an ashe
juniper community. Journal of Range Management. 26(5): 326-329. [50].

SEASON/SEVERITY CLASSIFICATION:
1) Spring/low--followed wet winter and spring
2) Spring/high--followed dry winter and spring


STUDY LOCATION:
The Beckham Ranch, Callahan County, 14 miles (24 km) southeast of Baird,
Texas.


PREFIRE VEGETATIVE COMMUNITY:
The natural vegetation of the area consists of mixed-prairie grasses
interspersed with Ashe's juniper and several species of oak.  The dominant
decreasers are little bluestem (Schizachyrium scoparium) and sideoats
grama (Bouteloua curtipendula).  Important increasers are buffalograss
(Buchloe dactyloides), vine-mesquite (Panicum obtusum), Texas
wintergrass (Stipa leucotricha), tall grama (B. pectinata) and meadow
dropseed (Sporobolus asper var. hookeri).


TARGET SPECIES PHENOLOGICAL STATE:
Large Ashe's juniper trees were bulldozed and piled in 1965 (burning took
place in 1970 and 1971).  Small Ashe's junipers that escaped the
bulldozers and new seedlings were also present.


SITE DESCRIPTION:
Average annual precipitation is 24 to 28 inches (600-700 mm).  The
topography of the area is level to undulating with some slopes greater
than 20 percent.  Elevation is 1,198 to 1,394 feet (365-425 m).  The
average minimum January temperature is 23 degrees Fahrenheit (-5 deg C),
and the average maximum July temperature is 95 degrees Fahrenheit (35
deg C).  The average growing season is 232 days.

Sandy loam sites in the study area have deep soils with fine sandy loam
surfaces 6 to 14 inches (15-36 cm) thick, and sandy clays and sandy loam
subsoils.  The soils are slowly to moderately permeable.  The low stony
hill site consists of very shallow, moderately permeable, calcareous,
stony clay soils.  Depth ranges from 6 to 12 inches (15-31 cm) with
limestone rocks and boulders present on the surface and in the profile
in various amounts.

All three sites were sampled for herbage production and fine fuel
concentration, and individual plots were marked to measure pile
consumption and tree mortality.  The uniformly fine fuels ranged from
686 to 3,186 pounds per acre (768-3,568 kg/ha).  The estimated amount of
heavy fuels (piles of Ashe's juniper) varied from 20 to 30 tons per acre
(44.8-67.2 t/ha) and occupied from 0 to 85 percent of the area with
an average cover of 22 percent.


FIRE DESCRIPTION:
Air temperature:  75 to 86 degrees Fahrenheit (24-30 deg C)
humidity: 25-35 percent
wind speed: 10 to 15 miles per hour (16-25 km/h)

The objectives of the prescribed fires were to consume the piles of dead
trees and to burn the intervening areas where Ashe's juniper seedlings had
established.  Fires were conducted in 2 separate years.  In March of
1970, one pasture of 1,013 acres (405 ha) was burned, and in March 1971,
2 pastures for a total of 1,620 acres (648 ha) were burned.  All areas
were burned with headfires.  The ignition pattern was a combination of
perimeter and strip headfiring.

Fire intensities were not reported.


FIRE EFFECTS ON TARGET SPECIES:
Plots on which fine fuels were 686 and 859 pounds per acre (768 and 962
kg/ha) were not successful in carrying the fire.  On plots where fine
fuels exceeded 1,000 pounds per acre (1,120 kg/ha), 99 percent of the
piles were consumed by fire.  The March 1971 fires followed 6 months of
very dry weather and were conducted under the lowest humidities and
highest winds that could be tolerated for prescribed burning.  Where
large piles were within 40 feet (12 m) of each other, firebrands would
ignite the piles downwind, precluding the necessity of continuous fine
fuel.

Ashe's juniper mortality was high where the fine fuels were adequate to
carry the headfire.  Of 368 trees under 6 feet (1.8 m) tall, only one
survived.  Many trees over 6 feet (1.8 m) tall were killed by the fire,
particularly where fine fuels exceeded 2,000 pounds per acre (2,240
kg/ha).


FIRE MANAGEMENT IMPLICATIONS:
Prescribed burning is a useful method for controlling Ashe's juniper
encroachment on grasslands.  It is recommended that the larger trees be
chained or dozed to assure mortality and to concentrate dead stems into
piles.  Fires require a minimum of 1,000 pounds per acre (1,120 kg/ha)
of fine fuels for successful spread, and 2,000 pounds per acre (2,240
kg/ha) is optimal.  Soil moisture should be a primary consideration
before conducting a prescribed fire.  Herbaceous plants require good
soil moisture for rapid recovery after the fire, which helps reduce soil
erosion.  Burning increased the yield of little bluestem and meadow
dropseed after the 1970 fire, which followed a wet winter and spring.
The same species decreased about 50 percent after the 1971 fires
following a dry winter and spring.

Vegetation on the burned juniper pile areas differed from that adjacent
to the piles.  Silver leaf nightshade (Solanum elaeagnifolium) and
Carolina horsenettle (S. carolinense) were dominant on the burned pile
areas, and may need to be controlled with herbicides.  Smoothleaf sumac
(Rhus glabra) also increase in prominence on the burned pile areas.
bibliyografik atıf
Sullivan, Janet. 1993. Juniperus ashei. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available: http://www.fs.fed.us/database/feis/

Fire Management Implications ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
More info for the terms: herbaceous, prescribed fire

Prescribed burning is a useful method for controlling Ashe's juniper
encroachment on grasslands.  It is recommended that the larger trees be
chained or dozed to assure mortality and to concentrate dead stems into
piles.  Fires require a minimum of 1,000 pounds per acre (1,120 kg/ha)
of fine fuels for successful spread, and 2,000 pounds per acre (2,240
kg/ha) is optimal.  Soil moisture should be a primary consideration
before conducting a prescribed fire.  Herbaceous plants require good
soil moisture for rapid recovery after the fire, which helps reduce soil
erosion.  Burning increased the yield of little bluestem and meadow
dropseed after the 1970 fire, which followed a wet winter and spring.
The same species decreased about 50 percent after the 1971 fires
following a dry winter and spring.

Vegetation on the burned juniper pile areas differed from that adjacent
to the piles.  Silver leaf nightshade (Solanum elaeagnifolium) and
Carolina horsenettle (S. carolinense) were dominant on the burned pile
areas, and may need to be controlled with herbicides.  Smoothleaf sumac
(Rhus glabra) also increase in prominence on the burned pile areas.

Key Plant Community Associations ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
More info for the terms: codominant, fire suppression

Ashe's juniper forms dense to open communities with oaks (Quercus spp.),
including live oak (Q. virginiana) and Mohr oak (Q. mohriana), Texas
persimmon (Diospyros texana), and mesquite (Prosopis spp.).  These
communities have invaded many acres of adjacent little bluestem
(Schizachyrium scoparium) grasslands as a result of overgrazing and fire
suppression [42].

Publications which list Ashe's juniper as a dominant or codominant
species include:

Utilization of grass- and shrublands of the southwestern United States [21]. 
A comparison of some woody upland and riparian plant communities
  of the southern Edwards Plateau [46].
An ecological comparison of upland deciduous and evergreen forests of
  central Texas [45]. 
North American shrublands [31].
bibliyografik atıf
Sullivan, Janet. 1993. Juniperus ashei. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available: http://www.fs.fed.us/database/feis/

Life Form ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
More info for the terms: shrub, tree

Tree, Shrub
bibliyografik atıf
Sullivan, Janet. 1993. Juniperus ashei. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available: http://www.fs.fed.us/database/feis/

Management considerations ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
More info for the terms: cover, grassland, litter, seed, stratification

In the last century on the Edwards Plateau in Texas, scrub oak (Texas
live oak [Quercus virginiana var. fusiformis] and Vasey oak [Q. pungens
var. vaseyana])-juniper communities have spread onto the mixed prairie.
This vegetative shift is due largely to the absence of fire, but
overgrazing, seed dispersal by livestock, and a possible shift in
climate are contributing factors [38,39,42].  It is currently estimated
that Ashe's juniper occupies 0.5 million acres in southern Oklahoma and
8.6 million acres in Texas, much of it on former grasslands [16].  Large
dense stands of Ashe's juniper are considered detrimental to both
livestock and wildlife; white-tailed deer prefer open stands and edges
close to cover and a variety of foods.  Dense stands of Ashe's juniper
reduce the amount of understory vegetation, resulting in a decrease in
available forage [33].

Chemical control:  Grumbles [16] reported that spot-application of
picloram at a rate of 0.1 ounce active ingredient (4 mL) per 3 feet (90
cm) of crown canopy diameter resulted in 97 percent mortality, except
for the very largest trees (over 15 feet [4.5 m] crown diameter).
Failure to kill the largest trees was attributed to heavy litter layers
and low precipitation.  The study also determined that spring
applications were more effective than fall applications.  Other authors
do not believe that herbicides are effective or economical in
controlling Ashe's juniper, and that use of herbicides can be detrimental
to other species [40,49].

Mechanical control:  Thirteen to eighteen years after Ashe's juniper was
removed by treedozing only (no burning of piles or downed trees), Ashe
juniper comprised 50 percent or more of the total brush cover.  Such
treatment leaves the seedbank intact, allowing Ashe's juniper to
reestablish fairly rapidly.  In similar areas where Ashe's juniper was
removed by treedozing and the piles burned 5 years later, Ashe's juniper
comprised less than 14 percent of total brush cover [35].  Double
chaining Ashe's juniper into piles and then burning the piles the same
year reduced Ashe's juniper cover by 93 percent [38].  Ashe's juniper trees
less than 5 feet (1.5 m) tall are not pulled up by chaining, so the
areas need to be broadcast burned to kill the young Ashe's junipers
between piles.  Single chaining is probably effective on pure, even-aged
Ashe's juniper stands and is less expensive than double chaining.  The
double chaining method is recommended for stands which are uneven-aged
or have other species present in substantial numbers [38].  To summarize
the recommended treatments:  Ashe's juniper should be reduced by
mechanical means and then burned about 5 years later.  Any undesirable
species can be spot treated with herbicides; the area should be burned
again when Ashe's juniper saplings reach 4 feet (1.2 m) in height
[33,34,35,52,53].

Sprouting species, such as Mohr oak and flameleaf sumac (Rhus
copallina), may increase on rangeland where Ashe's juniper is controlled
by burning.  The particular species depends on prior establishment,
treatment, and factors related to soil and aspect.  Brush species have
to be evaluated as to their contribution to management goals.  It is
often the case that the sprouting species are palatable and nutritious
for livestock and wildlife, and can be controlled by grazing practices.
Other species not removed by fire may not be desirable for livestock or
wildlife, and need to be controlled by other means (usually herbicides)
[33,35].

In general, it is neither possible nor desirable to eradicate all trees
and brush from the rangelands on the Edwards Plateau.  Current
management on public lands and on private ranches recognizes the
economic value of white-tailed deer.  A mixed pattern of open stands and
grassland is more desirable for deer and is also acceptable for
livestock [7,38,39].

Culture:  Germination of Ashe's juniper seeds is enhanced by cold
stratification at 41 degrees Fahrenheit (4 deg C) for 120 days.  Ashe
juniper seeds should be sown in the fall or cold stratified and sown in
the spring.  They can be drill seeded or hand broadcast and should be
mulched.  Seedlings need light shade the first growing season, as they
are easily damaged by excessive heat.  Junipers in general are resistant
to damping off and root rot [23].

Diseases:  Ashe's juniper is susceptible to juniper blight (Phomopsis
juniperova), which infects foliage and stem tissue.  This is a
particular problem in nursery stock.  Total loss of seedlings can occur
in epidemic years.  Older trees are seldom killed; mortality occurs
through girdling of small diameter stems.  Control consists of the
fungicide, Benomyl, applied throughout the growing season.  Ashe's juniper
is resistant to cedar-apple rust (Gymnosporangium juniperi-virginianae)
[23,37,47].
bibliyografik atıf
Sullivan, Janet. 1993. Juniperus ashei. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available: http://www.fs.fed.us/database/feis/

Phenology ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
More info on this topic.

More info for the term: fruit

The staminate catkins of Ashe's juniper open in early spring [23].
Pollination of the ovulate cones occurs at this time; the fruit develops
through its first summer and is ripe in early fall and winter.  The
"berries" usually persist through the winter [47].  Germination is in
the spring, usually after one, two, or three winters [23].
bibliyografik atıf
Sullivan, Janet. 1993. Juniperus ashei. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available: http://www.fs.fed.us/database/feis/

Post-fire Regeneration ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
More info for the terms: root crown, secondary colonizer, tree

   Tree without adventitious-bud root crown
   Secondary colonizer - off-site seed
bibliyografik atıf
Sullivan, Janet. 1993. Juniperus ashei. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available: http://www.fs.fed.us/database/feis/

Season/Severity Classification ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
1) Spring/low--followed wet winter and spring
2) Spring/high--followed dry winter and spring

Site Description ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
More info for the terms: cover, fuel, tree

Average annual precipitation is 24 to 28 inches (600-700 mm).  The
topography of the area is level to undulating with some slopes greater
than 20 percent.  Elevation is 1,198 to 1,394 feet (365-425 m).  The
average minimum January temperature is 23 degrees Fahrenheit (-5 deg C),
and the average maximum July temperature is 95 degrees Fahrenheit (35
deg C).  The average growing season is 232 days.

Sandy loam sites in the study area have deep soils with fine sandy loam
surfaces 6 to 14 inches (15-36 cm) thick, and sandy clays and sandy loam
subsoils.  The soils are slowly to moderately permeable.  The low stony
hill site consists of very shallow, moderately permeable, calcareous,
stony clay soils.  Depth ranges from 6 to 12 inches (15-31 cm) with
limestone rocks and boulders present on the surface and in the profile
in various amounts.

All three sites were sampled for herbage production and fine fuel
concentration, and individual plots were marked to measure pile
consumption and tree mortality.  The uniformly fine fuels ranged from
686 to 3,186 pounds per acre (768-3,568 kg/ha).  The estimated amount of
heavy fuels (piles of Ashe's juniper) varied from 20 to 30 tons per acre
(44.8-67.2 t/ha) and occupied from 0 to 85 percent of the area with
an average cover of 22 percent.

Taxonomy ( İngilizce )

Fire Effects Information System Plants tarafından sağlandı
The scientific name for Ashe's juniper is Juniperus ashei Buchholz.
(Cupressaceae). Ashe's juniper is thought to hybridize with Pinchot's
juniper (J. pinchotii) [19,30]. Adams and Kistler [3] summarized a number
of studies that investigated the report that Ashe's juniper hybridizes with
eastern redcedar (J. virginiana) [17,18]. They concluded that there was
no evidence of gene flow between the two species, even though their
ranges overlap and morphological intermediates exist. There are no
recognized subspecies, forms, or varieties of Ashe's juniper.
bibliyografik atıf
Sullivan, Janet. 1993. Juniperus ashei. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). Available: http://www.fs.fed.us/database/feis/

Physical Description ( İngilizce )

USDA PLANTS text tarafından sağlandı
Tree, Evergreen, Dioecious, Habit erect, Trees without or rarely having knees, Tree with bark shaggy or peeling, Young shoots in flat sprays, Young shoots 3-dimensional, Buds not resinous, Leaves scale-like, Whip leaves present, Leaves of two kinds, Leaves opposite, Leaves whorled, Non-needle-like leaf margins entire, Leaf apex acute, Leaf apex obtuse, Leaves < 5 cm long, Leaves < 10 cm long, Leaves not blue-green, Scale leaves with raised glands, Scale leaf glands not ruptured, Scales leaves not or barely overlapping, Whip leaf margins entire under magnification, Twigs glabrous, Twigs not viscid, Twigs without peg-like projections or large fascicles after needles fall, Aril completely enclosing seed coat, Berry-like cones pink, Bracts of seed cone included, Seeds tan, Seeds brown, Seeds wingless.
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Meksika ardıcı ( Azerice )

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Meksika ardıcı (lat. Juniperus ashei) - sərvkimilər fəsiləsinin ardıc cinsinə aid bitki növü.

Mənbə

Blue Pine (Pinus wallichiana) at Bhandakthathaatch (8000 ft) I IMG 7363.jpg İynəyarpaqlılar ilə əlaqədar bu məqalə qaralama halındadır. Məqaləni redaktə edərək Vikipediyanı zənginləşdirin. Etdiyiniz redaktələri mənbə və istinadlarla əsaslandırmağı unutmayın.
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Meksika ardıcı: Brief Summary ( Azerice )

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Meksika ardıcı (lat. Juniperus ashei) - sərvkimilər fəsiləsinin ardıc cinsinə aid bitki növü.

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Juniperus ashei ( Almanca )

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Juniperus ashei ist eine Pflanzenart aus der Familie der Zypressengewächse (Cupressaceae). Sie ist im Süden der USA sowie in Nord-Mexiko heimisch.

Beschreibung

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Zweig mit männlichen Blütenzapfen

Juniperus ashei wächst als immergrüner Strauch oder kleiner Baum, der Wuchshöhen von 6 bis 15 Meter und Brusthöhendurchmesser von bis zu 50 Zentimeter erreichen kann. Der Stamm verzweigt sich meist 1 bis 3 Meter über dem Boden. Die langen Äste gehen gerade oder aufsteigend vom Stamm ab und bilden eine offene bis dichte, unregelmäßig bis rundlich geformte Krone. Die steifen Zweige sind nicht hängend und haben einen viereckigen Querschnitt. Die braune Borke des Stammes sowie der von dicken Ästen wird mit der Zeit grau und blättert in dünnen Streifen ab. Meist wird sie von einem grauweißen Pilz besiedelt. Dünne Äste haben eine pinkfarbene Rinde die mit der Zeit grau wird und abzublättern beginnt.[1]

Die schuppenartigen, grün gefärbten Nadeln sind bei einer Länge von 1 bis 2 Millimeter und einer Breite von 0,8 bis 1,2 Millimeter rautenförmig geformt. Sie sind häufig gekielt und haben eine spitz zulaufende Spitze sowie fein gezähnte Nadelränder. An der Basis der Nadelunterseite befinden sich mehrere Stomataöffnungen während sich an der Nadeloberseite zwei Stomatabänder befinden. Die Drüsen auf den Nadeln sind nur undeutlich zu erkennen.[1]

Juniperus ashei ist zweihäusig-getrenntgeschlechtig (diözisch) und die Samen reifen im ersten Jahr. Die zahlreichen männlichen Blütenzapfen stehen einzeln an den Zweigen und sind bei einer Länge von 2 bis 4 Millimeter und einer Dicke von rund 2 Millimetern kugelig bis eiförmig geformt. Sie sind anfangs gelblich grün und verfärben sich zur Blütezeit hin pink oder hellbraun. Die beerenförmigen Zapfen sind bei einer Dicke von 6 bis 10 Millimeter kugelig bis breit-eiförmig geformt. Anfangs sind sie rosa-blaugrün gefärbt und verfärben sich zur Reife hin dunkelblau. Jeder der fleischigen und harzigen Zapfen trägt ein bis drei glänzend gelbbraune bis kastanienbraune Samen. Diese sind bei einer Länge von 4 bis 6 Millimeter und einer Breite von 3 bis 4,5 Millimeter breit eiförmig geformt. Die Keimlinge haben zwei Keimblätter (Kotyledonen).[1]

Die Chromosomenzahl beträgt 2n = 22.[1]

Verbreitung und Standort

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Verbreitungsgebiet

Das natürliche Verbreitungsgebiet von Juniperus ashei liegt in Mexiko und in den USA. In Mexiko findet man sie nur im Bundesstaat Coahuila. In den USA findet man sie in Arkansas, in den Ozark Mountains von Missouri, in Oklahoma sowie auf dem Edwards Plateau in Texas.[1]

Juniperus ashei gedeiht in Höhenlagen von 150 bis 1550 Metern. Sie ist eine Art des kontinentalen Klimas mit warmen Sommern und kalten Wintern. Man findet die Art vor allem auf Lichtungen sowie entlang von Flüssen, wo sie Kalkböden besiedelt. Sie bildet meistens Reinbestände aus aber es kommt auch zur Bildung von Mischbeständen mit Juniperus pinchotii, verschiedenen Eichen (Quercus) sowie mit Pinus remota.[1]

Nutzung

Das harte und dauerhafte, aber leichte Holz der Art hat eine lose Maserung und lässt sich leicht bearbeiten. Es verströmt einen leichten Geruch. Es wird lokal als Brennholz sowie zur Herstellung von Zaunpfählen, Telefonmasten und Eisenbahnschwellen genutzt. In Texas wird mithilfe von Wasserdampfdestillation aus dem Holz Zedernöl gewonnen. Die reifen Zapfen sind sowohl roh als auch gekocht essbar.[1][2]

Systematik

Die Erstbeschreibung als Juniperus ashei erfolgte 1930 durch John Theodore Buchholz in Botanical Gazette 90, S. 329. Synonyme für Juniperus ashei J. Buchholz sind Juniperus mexicana Spreng., Juniperus sabinoides (Kunth) Nees sowie Sabina sabinoides Small.[3]

Die Art wird in bis zu zwei Varietäten unterteilt:[3]

  • Juniperus ashei var. ashei ist die Nominatform. Sie kommt in Arkansas, Missouri, Oklahoma und in Texas vor.[4]
  • Juniperus ashei var. ovata R.P.Adams kommt in Coahuila und in Texas westlich von 101,2° W vor. Die Zapfen dieser Varietät werden rund 6 Millimeter groß und tragen meist zwei Samenkörner.[1]

Gefährdung und Schutz

Juniperus ashei wird in der Roten Liste der IUCN als „nicht gefährdet“ geführt. Es wird jedoch darauf hingewiesen, dass eine neuerliche Überprüfung der Gefährdung notwendig ist.[5]

Quellen

  • Christopher J. Earle: Juniperus ashei. In: The Gymnosperm Database. www.conifers.org, 12. Dezember 2010, abgerufen am 8. Februar 2012 (englisch).
  • Frank D. Watson, James E. Eckenwalder: Cupressaceae. Juniperus. In: Flora of North America Editorial Committee (Hrsg.): Flora of North America North of Mexico. Pteridophytes and Gymnosperms. Volume 2. Oxford University Press, New York u. a. 1993, ISBN 0-19-508242-7, Juniperus ashei (englisch, Juniperus ashei - Online – dieses Werk ist textgleich Online).

Einzelnachweise

  1. a b c d e f g h Christopher J. Earle: Juniperus ashei. In: The Gymnosperm Database. www.conifers.org, 12. Dezember 2010, abgerufen am 8. Februar 2012 (englisch).
  2. Juniperus ashei. In: Plants For A Future. www.pfaf.org, abgerufen am 8. Februar 2012 (englisch).
  3. a b Juniperus ashei bei Tropicos.org. Missouri Botanical Garden, St. Louis Abgerufen am 8. Februar 2012.
  4. Rafaël Govaerts (Hrsg.): Juniperus. In: World Checklist of Selected Plant Families (WCSP) – The Board of Trustees of the Royal Botanic Gardens, Kew, abgerufen am 26. März 2019.
  5. Juniperus ashei in der Roten Liste gefährdeter Arten der IUCN 2011. Eingestellt von: Conifer Specialist Group, 1998. Abgerufen am 8. Februar 2012.

Weblinks

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Juniperus ashei: Brief Summary ( Almanca )

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Juniperus ashei ist eine Pflanzenart aus der Familie der Zypressengewächse (Cupressaceae). Sie ist im Süden der USA sowie in Nord-Mexiko heimisch.

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Juniperus ashei ( İngilizce )

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Juniperus ashei (Ashe juniper, mountain cedar, blueberry juniper, post cedar, or just cedar) is a drought-tolerant evergreen tree, native from northeastern Mexico and the south-central United States to southern Missouri. The largest areas are in central Texas, where extensive stands occur. Ashe juniper grows up to 10 metres (33 feet) tall, and over time can reach 15 m (49 ft), and provides erosion control and year-round shade for wildlife and livestock.

Description

The feathery foliage grows in dense sprays, bright green in color. The leaves are scale-like, 2 to 5 millimetres (116 to 316 inch) long, and produced on rounded (not flattened) shoots. It is a dioecious species, with separate male and female plants. The seed cones are round, 3 to 5 mm (18 to 316 in) long, and soft, pulpy and berry-like, green at first, maturing purple about 8 months after pollination. They contain one or two seeds, which are dispersed when birds eat the cones and pass the seeds in their droppings. The male cones are 3–5 mm long, yellow, turning brown after pollen release in December to February.

Scientific name

The specific name ashei pays homage to American forester and botanist William Willard Ashe.[3]

As an invasive species

Despite being native to Texas, ashe juniper is often considered an invasive species and weed by many landowners and ranchers. It is commonly believed that they use more water than live oaks, but more recent research suggests the reverse.[4][5][6][7][8]

Ashe juniper thrives on ranches, as cattle avoid the bitter-tasting seedlings. In contrast to the redberry juniper, ashe juniper does not resprout when cut.[9]

Allergens

Ashe juniper pollen, along with that of the related Juniperus virginiana, can cause a severe allergic reaction. Consequently, what begins as a winter allergy may extend into spring, as the pollination of J. virginiana follows that of J. ashei. Colloquially, many Texans refer to the allergy as cedar fever.

Uses

Spanish explorers who arrived in what is now Texas in the mid-18th century built Hill Country missions using ashe junipers for roof beams. Poor land management, due to decades of clearcutting and overgrazing, led to soil erosion and a preponderance of caliche. The ashe juniper was one of the few plants that could thrive in the rocky soil.

The wood is naturally rot-resistant and provides raw material for fence posts. Posts cut from old-growth Ashe junipers have been known to last in the ground for more than 50 years. Over 100 years ago, most old-growth Ashe junipers were cut and used not only for fence posts, but also for foundation piers, telegraph and telephone poles, roof framing, and railroad ties.[10][11][12][13]

The berry-like cones are eaten by a number of wildlife.[14][15] The endangered golden-cheeked warbler uses the shredding bark of older Mountain Cedars to build its nests and old-growth cedar brakes and juniper-oak woodlands as habitat.

References

  1. ^ Farjon, A. (2020). "Juniperus ashei". IUCN Red List of Threatened Species. 2020: e.T42224A179047527. doi:10.2305/IUCN.UK.2020-3.RLTS.T42224A179047527.en. Retrieved 13 November 2021.
  2. ^ United States Forest Service
  3. ^ Coker, W. C.; Holmes, J. S.; Korstian, C. F. (1932). "WILLIAM WILLARD ASHE". Journal of the Elisha Mitchell Scientific Society. 48 (1): 40–47. ISSN 0013-6220.
  4. ^ Fannin, Blair, 2008. “Research Could Change Perception of Woody Species Use of Water in Edwards Plateau,” AgriLife Today online. July 30.
  5. ^ Hauwert, Nico M. and Jack M. Sharp, 2014. “Measuring Autogenic Recharge over a Karst Aquifer Utilizing Eddy Covariance Evapotranspiration,” Journal of Water Resource and Protection. Volume 6:869-879.
  6. ^ Gregory, Lucas Frank, 2006. Water Budgets and Cave Recharge on Juniper Rangelands in the Edwards Plateau. Texas A&M University Thesis.
  7. ^ Owens, Keith M., Robert K. Lyons, and Chris L. Alejandro. 2006. “Rainfall Partitioning within Semiarid Juniper Communities: Effects of Event Size and Canopy Cover,” Hydrological Processes. Volume 20: 3179-3189.
  8. ^ Schwinning, Susanne, 2008. “The Water Relations of Two Evergreen Tree Species in a Karst Savanna,” Oecologia. Volume 158: 373-383.
  9. ^ McGinty, Allan (18 March 1997). "JUNIPER ECOLOGY". unidentified. Archived from the original on 16 April 2009. Retrieved 2009-01-10.
  10. ^ Bray, William L., 1904. Forest Resources of Texas, U.S. Department of Agriculture, Bureau of Forestry, Bulletin No. 47. Government Printing Office: Washington D.C.
  11. ^ Roemer, Dr. Ferdinand, 1983. Roemer’s Texas 1845 to 1847. German-Texas Heritage Society. Eakin Press: Austin.
  12. ^ Brown, Frank, 1875. Annals of Travis County and of the City of Austin: From the Earliest Time to the Close of 1875, Vol. 6. Austin History Center.
  13. ^ Austin Daily Democratic Statesman, September 10, 1874.
  14. ^ Little, Elbert L. (1980). The Audubon Society Field Guide to North American Trees: Eastern Region. New York: Knopf. p. 307. ISBN 0-394-50760-6.
  15. ^ Chavez-Ramirez, Felipe, 1992. The Role of Birds and Mammals in the Dispersal Ecology of Ashe Juniper in the Edwards Plateau. Texas, A&M University Thesis.

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Juniperus ashei: Brief Summary ( İngilizce )

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Juniperus ashei (Ashe juniper, mountain cedar, blueberry juniper, post cedar, or just cedar) is a drought-tolerant evergreen tree, native from northeastern Mexico and the south-central United States to southern Missouri. The largest areas are in central Texas, where extensive stands occur. Ashe juniper grows up to 10 metres (33 feet) tall, and over time can reach 15 m (49 ft), and provides erosion control and year-round shade for wildlife and livestock.

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Juniperus ashei ( İzlandaca )

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Juniperus ashei er þurrk-þolið sígrænt tré, ættað frá norðaustur Mexíkó og miður suðurhluti Bandaríkjanna norður til suður Missouri; stærstu lundirnir eru í mið Texas. hann verður um 10 m hár, sjaldan 15m, og ver gegn jarðvegseyðingu og gefur dýrum skjól og skugga allt árið.

Barrið er ljósgrænt að lit, 2 til 5 mm langt, hreisturlaga og er á rúnnuðum (ekki flötum) sprotum. Plönturnar eru einkynja, annaðhvort karlkyns eða kvenkyns. Berkönglarnir eru 3 til 5 mm langir, grænir í fyrstu, en á 8 mánuðum ná þeir fullum þroska og verða þá bláleitir. Þeir innihalda eitt til tvö ber, sem er dreift með fuglum. Karlreklarnir eru um 3 til 5mm langir, gulir, en verða brúnir eftir frjósleppingu í desember til febrúar.

Nytjar

Viðurinn er með náttúrulega fúavörn og er góður í girðingastaura. Staurar af gömlum trjám hafa enst í meir en 50 ár. Fyrir meir en 100 árum var mikið af gömlum einitrjám höggvin og notuð í girðinga og símastaura og undir lestarteina.[3]

Berkönglarnir eru fæða ýmissa dýra.[4]

Texas

Þegar Evrópubúar komu fyrst til Hill Country (Texas), sóttust þeir eftir cýprus, eik og einitrjám, vegna þess að það þau gáfu besta timbrið. Afleiðing misnotkunar á landinu og þá ekki síst skógarhöggs, var að jarðvegurinn blés í burt og eftir stóð caliche (kalk-leir). Ein fárra tegunda sem þolir þannig grýttan jarðveg er Juniperus ashe.

Bændur á svæðinu líta enn á hann sem illgresi og reyna eða eða honum. Hann vex ekki aftur af höggnum stofnum, en hin skylda tegund Juniperus pinchotii gerir það.[5]

Einir sem vex á ofbeittu landi er ungur og kröftugur, þéttur og fjölstofna, og með gunnar rætur. Þetta er öfugt við gömlu trén sem fyrstu landnemarnir fundu, en þau voru yfirleitt einstofna, sum gáfu boli að 90 sm í þvermál og 12 m langa.[6]

Tilvísanir

  1. Farjon, A. (2013). "Juniperus ashei". IUCN Red List of Threatened Species. IUCN. 2013: e.T42224A2962793. doi:10.2305/IUCN.UK.2013-1.RLTS.T42224A2962793.en.
  2. United States Forest Service
  3. Bray, William L., 1904. Forest Resources of Texas, U.S. Department of Agriculture, Bureau of Forestry, Bulletin No. 47. Government Printing Office: Washington D.C.
  4. Little, Elbert L. (1980). The Audubon Society Field Guide to North American Trees: Eastern Region. New York: Knopf. bls. 307. ISBN 0-394-50760-6.
  5. McGinty, Allan (18. mars 1997). „JUNIPER ECOLOGY“. unidentified. Afrit af upprunalegu geymt þann 16 April 2009. Sótt 10. janúar 2009.
  6. Owens, M.K., R.K. Lyons and C.J. Alejandro. 2006. Rainfall partitioning within semiarid juniper communities: Effects of event size and canopy cover. Hydrological Processes 20:3179–3189.

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Juniperus ashei: Brief Summary ( İzlandaca )

wikipedia IS tarafından sağlandı

Juniperus ashei er þurrk-þolið sígrænt tré, ættað frá norðaustur Mexíkó og miður suðurhluti Bandaríkjanna norður til suður Missouri; stærstu lundirnir eru í mið Texas. hann verður um 10 m hár, sjaldan 15m, og ver gegn jarðvegseyðingu og gefur dýrum skjól og skugga allt árið.

Barrið er ljósgrænt að lit, 2 til 5 mm langt, hreisturlaga og er á rúnnuðum (ekki flötum) sprotum. Plönturnar eru einkynja, annaðhvort karlkyns eða kvenkyns. Berkönglarnir eru 3 til 5 mm langir, grænir í fyrstu, en á 8 mánuðum ná þeir fullum þroska og verða þá bláleitir. Þeir innihalda eitt til tvö ber, sem er dreift með fuglum. Karlreklarnir eru um 3 til 5mm langir, gulir, en verða brúnir eftir frjósleppingu í desember til febrúar.

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Juniperus ashei ( Norveççe )

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Juniperus ashei Juniperus ashei Vitenskapelig(e)
navn
: Juniperus ashei Norsk(e) navn: — Biologisk klassifikasjon: Rike: Planteriket Divisjon: Karplanter Klasse: Nakenfrøede planter Orden: Bartrær Familie: Sypressfamilien Slekt: Juniperus IUCNs rødliste: livskraftig

Juniperus ashei eller «Ashe Juniper» er en art av bartrær som tilhører einerslekten Juniperus i sypressfamilien. Den vokser i Mexico og i det sørvestre og midtre USA opp til sørlige Mississippi. Hovedbestanden vokser i Texas.

Arten er inntil 15 meter høy, bestanddannende, og har lysegrønne, skjellaktige nåler inntil 2–5 mm lange. Den er oftest særbu med hann- og hunnblomster på ulike individer. Bærkonglene modner på 8-10 måneder til et purpurfarget, 3–6 mm stort bær med 1-2 frø. Hannkonglene er 3–5 mm store, gulbrune, og sprer sitt pollen i november-desember.

Eksterne lenker

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Juniperus ashei: Brief Summary ( Norveççe )

wikipedia NO tarafından sağlandı

Juniperus ashei eller «Ashe Juniper» er en art av bartrær som tilhører einerslekten Juniperus i sypressfamilien. Den vokser i Mexico og i det sørvestre og midtre USA opp til sørlige Mississippi. Hovedbestanden vokser i Texas.

Arten er inntil 15 meter høy, bestanddannende, og har lysegrønne, skjellaktige nåler inntil 2–5 mm lange. Den er oftest særbu med hann- og hunnblomster på ulike individer. Bærkonglene modner på 8-10 måneder til et purpurfarget, 3–6 mm stort bær med 1-2 frø. Hannkonglene er 3–5 mm store, gulbrune, og sprer sitt pollen i november-desember.

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Juniperus ashei ( Ukraynaca )

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Поширення, екологія

Країни проживання: Мексика (Коауїла); США (Арканзас, Міссурі, Оклахома, Техас). Цей вид зустрічається на луках та чагарниках, іноді разом з Juniperus pinchotii, Pinus remota і Quercus; в піщаному або кам'янистому ґрунті на рівнинах, на кручах і хребтах, на схилах або уздовж русел в піщаному або кам'янистому ґрунті, зазвичай на вапняку. Висотний діапазон (150-) 600–1550 м. Клімат континентальний, з теплим літом і холодною зимою, сухим з більш спекотним літом на півдні ареалу.

Морфологія

 src=
Чоловічі шишки

Дводомний крупний чагарник або невелике дерево, 6-10 (-15) м заввишки, як правило і до 50 см діаметром. Гілки довгі від розлогих до висхідних з округлою кроною. Кора на дрібних гілках спершу рожева, потім сіріє і лущиться; на стовбурі і крупних гілках коричнева, вивітрюючись сіріє і відлущується тонкими смужками. Листя зеленого кольору, лусковидне, від 2 до 5 мм в довжину. Пилкові шишки численні від майже кулястих до яйцеподібних, 2-4 х 2 мм, жовто-зелені дозрівають до рожевого або світло-коричневого кольору. Шишки зріють 1 рік, молоді шишки рожево-сизі, дозрівши темно-сині, від кулястих до широко-яйцевидних, 6-10 мм, соковиті і смолисті, з 1-2 (-3) насінням. Насіння широко-яйцеподібне, 4-6 х 3-4,5 мм, не сплющене, блискуче від жовто-коричневого до каштаново-коричневого кольору, з більш світлим рубчиком. 2n = 22.

Використання

Жорстка і міцна, але світла деревина має пухку структуру. Випускає слабкий запах. Використовується локально, як дрова і для виготовлення заборів і телефонних стовпів. Зрілі шишки сирі і приготовані їстівні.

Загрози та охорона

Ніяких конкретних загроз не було визначено для цього виду. Цей вид зустрічається у кількох охоронних територіях.

Посилання


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Juniperus ashei ( Vietnamca )

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Juniperus ashei là một loài thực vật hạt trần trong họ Cupressaceae. Loài này được J.Buchholz mô tả khoa học đầu tiên năm 1930.[1]

Chú thích

  1. ^ The Plant List (2010). Juniperus ashei. Truy cập ngày 28 tháng 5 năm 2014.

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Juniperus ashei: Brief Summary ( Vietnamca )

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Juniperus ashei là một loài thực vật hạt trần trong họ Cupressaceae. Loài này được J.Buchholz mô tả khoa học đầu tiên năm 1930.

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Можжевельник мексиканский ( Rusça )

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Царство: Растения
Подцарство: Зелёные растения
Отдел: Хвойные
Класс: Хвойные
Порядок: Сосновые
Семейство: Кипарисовые
Вид: Можжевельник мексиканский
Международное научное название

Juniperus ashei Buchh.

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ITIS 194812NCBI 13101EOL 323369IPNI 676796-1TPL kew-2332607

Можжевельник мексиканский (лат. Juniperus ashei) — вид растений рода Можжевельник семейства Кипарисовые.

Распространение

В естественных условиях растёт в Северной Америке, от Канады до Флориды. Встречается в юго-восточных штатах США, в Мексике и Центральной Америке.

Описание

Кустарники или деревья, двудомные. Вырастают, как правило, высотой 5-10 м, в исключительных случаях до 15 м. Хвоя 2-5 мм в длину. Шишкоягоды мелкие, 3-6 мм, созревают осенью первого года. Древесина дерева хрупкая, устойчива против гниения. В посадках весьма декоративен.

В США из древесины и хвои Juniperus mexicana Schiede и Juniperus virginiana L. извлекают кедровое эфирное масло.

Пыльца в некоторых случаях вызывает тяжелые аллергические реакции.

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Можжевельник мексиканский: Brief Summary ( Rusça )

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Можжевельник мексиканский (лат. Juniperus ashei) — вид растений рода Можжевельник семейства Кипарисовые.

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