Description
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İngilizce
)
eFloras tarafından sağlandı
Trees to 30 m; crown broadly columnar, sparse. Bark smooth at first, later building up in layers. Branchlets decussate, 0.5--1.3 mm diam. Leaves with conspicuous, pitlike, abaxial gland that produces drop of resin, slightly glaucous. Pollen cones 2--3 ´ 2--2.5 mm; pollen sacs 3--5. Seed cones globose, mostly 1--2 cm, silvery, not glaucous; scales 3--4 pairs, usually covered with resin blisters, umbos often prominent, those of distal scales erect, to 4 mm. Seeds mostly 3--4 mm, light tan to medium brown, not glaucous to slightly glaucous.
- lisans
- cc-by-nc-sa-3.0
- telif hakkı
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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İngilizce
)
eFloras tarafından sağlandı
Calif., Oreg.
- lisans
- cc-by-nc-sa-3.0
- telif hakkı
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
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İngilizce
)
eFloras tarafından sağlandı
Mixed evergreen forests; of conservation concern; 1100--2000m.
- lisans
- cc-by-nc-sa-3.0
- telif hakkı
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
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İngilizce
)
eFloras tarafından sağlandı
Cupressus bakeri Jepson subsp. matthewsii C. B. Wolf; C. macnabiana A. Murray bis var. bakeri (Jepson) Jepson
- lisans
- cc-by-nc-sa-3.0
- telif hakkı
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Physical Description
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İngilizce
)
USDA PLANTS text tarafından sağlandı
Tree, Evergreen, Monoecious, Habit erect, Trees without or rarely having knees, Primary plant stem smooth, Tree with bark smooth, Tree with bark rough or scaly, Tree with bark shaggy or peeling, Young shoots 3-dimensional, Buds not resinous, Leaves scale-like, Leaves opposite, Non-needle-like leaf margins entire, Leaf apex acute, Leaf apex obtuse, Leaves < 5 cm long, Leaves < 10 cm long, Leaves not blue-green, Outer leaf surface covered with resin, Scale leaves with raised glands, Scale leaf glands ruptured, Scale leaves overlapping, Twigs glabrous, Twigs not viscid, Twigs without peg-like projections or large fascicles after needles fall, Berry-like cones orange, Woody seed cones < 5 cm long, Bracts of seed cone included, Seeds tan, Seeds winged, Seeds equally winged, Seed wings narrower than body.
- derleyici
- Stephen C. Meyers
- derleyici
- Aaron Liston
- derleyici
- Steffi Ickert-Bond
- derleyici
- Damon Little
Cupressus bakeri
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İngilizce
)
wikipedia EN tarafından sağlandı
Cupressus bakeri, reclassified as Hesperocyparis bakeri,[2][4][5] with the common names Baker cypress, Modoc cypress, or Siskiyou cypress, is a rare species of cypress tree endemic to a small area across far northern California and extreme southwestern Oregon, in the western United States.
Description
The evergreen tree has a conic crown, growing to heights of 9–25 meters (30–82 ft),[6] exceptionally to 39 m (130 ft), and a trunk diameter of up to 50 centimeters (20 inches), exceptionally to 1 m (40 in). The bark is thin, red when young, and gray in maturity.[6]
The foliage grows in sparse, very fragrant, usually pendulous sprays, varying from dull gray-green to glaucous blue-green in color. The leaves are scale-like, 2–5 millimeters long, and produced on rounded (not flattened) shoots.[7]
The seed cones are globose to oblong, covered in warty resin glands, 10–25 mm (3⁄8–1 in) long, with 6 or 8 (rarely 4 or 10) scales, green to brown at first, maturing gray or gray-brown about 20–24 months after pollination. The male cones are 3–5 mm long, and release pollen in February–March.[8]
Distribution and habitat
The tree grows in limited populations in southwestern Oregon's Josephine and Jackson counties, and slightly more populously in a small section of Northern California within Siskiyou, Modoc, Shasta, Plumas and Tehama counties.[9] It is probably the northernmost cypress.[6]
It is usually found in small, scattered populations, not in large forests, at altitudes of 900–2,000 m (3,000–6,600 ft). This includes locales in the Modoc Plateau, southern Cascade Range, Klamath Mountains, and northern Sierra Nevada.[10] It is slow-growing in the wild, and is mostly restricted to sites difficult for plant growth, on serpentine soils and on old lava flows. Its tolerance of these sites enables it to avoid competition from much faster-growing trees. It is found in chaparral and yellow pine forest habitats.[5]
Ecology
The tree's thin bark makes it susceptible to wildfire, exposure to which is required to release the seeds; these then colonize the scorched earth left behind.[6] Fire suppression policies of the past decades have severely limited reproduction of the species. It is listed as a vulnerable species on the IUCN Red List.[11]
See also
References
- lisans
- cc-by-sa-3.0
- telif hakkı
- Wikipedia authors and editors
Cupressus bakeri: Brief Summary
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İngilizce
)
wikipedia EN tarafından sağlandı
Cupressus bakeri, reclassified as Hesperocyparis bakeri, with the common names Baker cypress, Modoc cypress, or Siskiyou cypress, is a rare species of cypress tree endemic to a small area across far northern California and extreme southwestern Oregon, in the western United States.
- lisans
- cc-by-sa-3.0
- telif hakkı
- Wikipedia authors and editors