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Key to families | Table of families and genera
Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.
Shrub-like, stem often short, forming basal rosettes, scapose, often rhizomed, generally dying after flowering. Leaf: long-lived, sessile, lance-linear to ovate, thick, generally rigid, often fleshy, glabrous, armed with marginal teeth, spine at tip. Inflorescence: panicle-, raceme-, or spike-like, bracted, often with bulblets. Flower:  paired, or in clusters of 3–40; perianth generally funnel- or bell-shaped, yellow to green-yellow, parts petal-like, 6 in 2 whorls, fused basally, lobes erect to ascending or ± spreading distally; stamens 6; ovary inferior, 3-chambered. Fruit: oblong to ovoid, often beaked, loculicidal. Seed: many, ± flat, black.
± 200 species: warm, tropical America. (Greek: noble, for imposing stature) [Reveal & Hodgson 2002 FNANM 26:442–461]
Unabridged note: Cult material may be identified using Gentry 1982 Agaves of Continental N. America. Univ. Arizona Press.
1. Inflorescence raceme-like; filaments white, ± from base of perianth tube; leaf tip-spine 4–20 cm ..... A. utahensis
2. Leaf tip-spine ivory-white, 10–20 cm ..... var. eborispina
2' Leaf tip-spine brown to ± white, 4–8.5 cm ..... var. nevadensis
1' Inflorescence panicle-like; filaments yellow, from middle of perianth tube or above; leaf tip-spine 2–4 cm
3. Leaf narrow-ovate; perianth 6–10 cm, lobes 17–40 mm; fruit 5.5–7 cm; s South Coast (sw San Diego Co.) ..... A. shawii var. shawii
3' Leaf lance-linear to lanceolate; perianth 3–6 cm, lobes 13–20 mm; fruit 3–6 cm; Desert Mountains (San Bernardino Co.), Sonoran Desert ..... A. deserti
4. Perianth tube 3–5 mm, bell-shaped; filaments ± from top of perianth tube; rosettes many; Sonoran Desert ..... var. deserti
4' Perianth tube (3)5–10 mm, funnel-shaped; filaments from above middle of perianth tube; rosette 1; Desert Mountains (San Bernardino Co.) ..... var. simplex
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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