Difference between revisions of "Agave havardiana"
Rep. (Annual) Missouri Bot. Gard. 22: 91, plates 84–86. 1912.
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|elevation=1200–2000 m | |elevation=1200–2000 m | ||
|distribution=Tex.;nw Mexico. | |distribution=Tex.;nw Mexico. | ||
| − | |discussion=<p>Agave havardiana hybridizes with A. lechuguilla to form A. ×glomeruliflora, with which it may also hybridize.</p> | + | |discussion=<p><i>Agave havardiana</i> hybridizes with <i>A. lechuguilla</i> to form <i>A. ×glomeruliflora</i>, with which it may also hybridize.</p> |
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name=Agave havardiana | name=Agave havardiana | ||
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|authority=Trelease | |authority=Trelease | ||
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|publication year=1912 | |publication year=1912 | ||
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| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V26/V26_957.xml |
|genus=Agave | |genus=Agave | ||
|species=Agave havardiana | |species=Agave havardiana | ||
Latest revision as of 21:18, 5 November 2020
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.
Phenology: Flowering summer–early fall.
Habitat: Gravelly to rocky, often calcareous places in grasslands, desert scrub, pinyon-juniper, and oak woodlands
Elevation: 1200–2000 m
Distribution
Tex., nw Mexico.
Discussion
Agave havardiana hybridizes with A. lechuguilla to form A. ×glomeruliflora, with which it may also hybridize.
Selected References
None.