dcsimg
Image of Havard's century plant
Creatures » » Plants » » Dicotyledons » » Asparagus Family »

Havard's Century Plant

Agave havardiana Trel.

Comments

provided by eFloras
Agave havardiana hybridizes with A. lechuguilla to form A. × glomeruliflora, with which it may also hybridize.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 26: 445, 450, 458 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Description

provided by eFloras
Plants acaulescent, sparsely suckering; rosettes usually solitary, (4–)5–8 × (5–)10–15 dm, rather open. Leaves ascending, 30–60 (–70) × 15–27 cm; blade glaucous-gray to gray-green, not cross-zoned, lanceolate to broadly lanceolate, rigid, adaxially concave, abaxially convex; margins straight, armed, teeth single, well defined, (5–)7–10 mm, 1.5–2 cm apart; apical spine dark brown to gray, subulate, 3–5(–10) cm. Scape 2–7 m. Inflorescences paniculate, not bulbiferous, dense; bracts persistent, lanceolate, (3–)5–10 cm; lateral branches 12–20, slightly ascending, comprising distal 1/2–2/3 of inflorescence, longer than 10 cm. Flowers 21–48 per cluster, erect, 6.8–9 cm; perianth yellow to yellow-green, tube funnelform, 14–22 × 15–22 mm, limb lobes erect, slightly unequal, 18–24 mm; stamens long-exserted; filaments inserted irregularly ca. mid perianth tube, erect, yellow, 5–6.5 cm; anthers yellow, 25–30 mm; ovary 3–4 cm, neck constricted, 2–8 mm. Capsules short-pedicellate, oblong to obovoid, 4–5.7 cm, apex beaked. Seeds 6–7 mm.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 26: 445, 450, 458 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Distribution

provided by eFloras
Tex.; nw Mexico.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 26: 445, 450, 458 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Flowering/Fruiting

provided by eFloras
Flowering summer--early fall.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 26: 445, 450, 458 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Habitat

provided by eFloras
Gravelly to rocky, often calcareous places in grasslands, desert scrub, pinyon-juniper, and oak woodlands; 1200--2000m.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 26: 445, 450, 458 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Agave havardiana

provided by wikipedia EN

Agave havardiana is a plant species native to the Big Bend area of western Texas as well as Chihuahua and Coahuila. It prefers grassy to rocky slopes or woodlands at elevations of 1200–2000 m.[2]

Agave havardiana is an acaulescent species forming rosettes low to the ground, sometimes creating suckers but not forming large colonies like some other species. Leaves are up to 70 cm (28 inches) long, with teeth along the margins and at the tip. Flowering stalks can be up to 7 m (23 feet) tall, with yellow to yellow-green flowers. Fruits are dry, oblong, up to 6 cm (2.4 inches) long.[3][4]

This species is under threat from habitat loss, mostly for cattle ranching.[1]

References

  1. ^ a b Hernández Sandoval, L.; Sandoval-Gutiérrez, D.; Hernández-Martínez, M.; Sánchez, E.; González-Elizondo, M.; Zamudio, S.; Matías-Palafox, M. (2020). "Agave havardiana". IUCN Red List of Threatened Species. 2020: e.T115629519A116353923. doi:10.2305/IUCN.UK.2020-2.RLTS.T115629519A116353923.en. Retrieved 20 November 2021.
  2. ^ Flora of North America vol 26 p 458.
  3. ^ Trelease, William. Rep. (Annual) Missouri Bot. Gard. 22: 91, plates 84–86. 1912.
  4. ^ Gentry, H. S. 1982. Agaves of Continental North America. Tucson.
license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN

Agave havardiana: Brief Summary

provided by wikipedia EN

Agave havardiana is a plant species native to the Big Bend area of western Texas as well as Chihuahua and Coahuila. It prefers grassy to rocky slopes or woodlands at elevations of 1200–2000 m.

Agave havardiana is an acaulescent species forming rosettes low to the ground, sometimes creating suckers but not forming large colonies like some other species. Leaves are up to 70 cm (28 inches) long, with teeth along the margins and at the tip. Flowering stalks can be up to 7 m (23 feet) tall, with yellow to yellow-green flowers. Fruits are dry, oblong, up to 6 cm (2.4 inches) long.

This species is under threat from habitat loss, mostly for cattle ranching.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN