Agave havardiana


Rep. (Annual) Missouri Bot. Gard. 22: 91, plates 84–86. 1912

Common names: Havard agave
Treatment appears in FNA Volume 26. Treatment on page 458. Mentioned on page 445, 450.
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


Agave havardiana hybridizes with A. lechuguilla to form A. ×glomeruliflora, with which it may also hybridize.



Lower Taxa

No lower taxa listed.

Facts about "Agave havardiana"
AuthorJames L. Reveal + and Wendy C. Hodgson +
AuthorityTrelease +
Common nameHavard agave +
DistributionTex. + and nw Mexico. +
Elevation1200–2000 m +
HabitatGravelly to rocky, often calcareous places in grasslands, desert scrub, pinyon-juniper, and oak woodlands +
IllustratorBee F. Gunn +
PhenologyFlowering summer–early fall. +
Publication titleRep. (Annual) Missouri Bot. Gard. +
Publication year1912 +
ReferenceNone +
Source xml grained fna xml/V26/V26 957.xml +
Taxon familyAgavaceae +
Taxon nameAgave havardiana +
Taxon parentAgave +
Taxon rankspecies +
VolumeVolume 26 +