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AGAVACEAE CENTURY PLANT FAMILY

Dale W. McNeal, except as noted

Perennial herb, shrub, tree, fibrous succulent or not, from bulbs or rhizomes. Stem: above ground or not, branched or not. Leaf: simple, deciduous or not, basal or in terminal rosettes, generally sessile, linear, lanceolate, oblanceolate or ovate, fibrous or not, thin and flexible or thick and rigid or succulent; margin entire, fine-serrate, dentate, or with filaments, tips rigid or flexible, with a spine or not. Flower: bisexual; perianth parts 6, in 2 petal-like whorls, free or ± fused; stamens 6, ± fused to perianth, filaments often wide, succulent; ovary superior or inferior, chambers 3, style 1 (thick, poorly defined), stigma head-like or 3-lobed. Fruit: capsule, indehiscent, loculicidal, or septicidal. Seed: few to many, ± flat or ovoid, generally black.
23 genera, 637 species: worldwide. —Scientific Editors: Dale W. McNeal, Thomas J. Rosatti.

Key to Agavaceae

AGAVE CENTURY PLANT

James L. Reveal

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: [1] 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.

Key to Agave

A. deserti Engelm.
NATIVE
Stem 0–0.4 m; rosettes 1 or many, 3–7 dm. Leaf: lance-linear to lanceolate, marginal teeth 2–3 mm or 5–8 mm, generally 1.5–3 cm apart, tip-spine 2–4 cm. Inflorescence: panicle-like, 2–6 m including peduncle; bracts 8–15 cm, triangular, persistent; branches 6–15, generally 10–20 cm; flowers 12–48 per cluster. Flower: perianth 3–6 cm, lobes 13–20 mm, equal; stamens long-exserted, filaments 2.5–3.5(4.2) cm, yellow, anthers 13–21 mm; ovary 1.6–4 cm. Fruit: 3–6 cm. Seed: 5–6 mm. [Online Interchange]

A. deserti var. simplex (Gentry) W.C. Hodgs. & Reveal SIMPLE DESERT AGAVE
NATIVE
Rosette 1. Leaf: (20)25–60 cm, ± green. Flower: perianth tube (3)5–10 mm, funnel-shaped; filaments from above middle of tube.
Sandy to rocky slopes, washes in desert scrub; 300–1500 m. Desert Mountains (San Bernardino Co.); Arizona, Sonora. [Agave deserti subsp. simplex Gentry] May–Jul [Online Interchange]

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 24 2014
Citation for this treatment: [Author of taxon treatment] 2013. Agave, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=49024, accessed on Oct 24 2014

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Geographic subdivisions indicated for the distribution of Agave deserti var. simplex Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.