Jepson Herbarium
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Annual to tree.
Leaf: generally alternate, generally compound, generally stipuled, generally entire, pinnately veined
Inflorescence: generally raceme, spike, umbel or head; or flowers 1–few in axils.
Flower: generally bisexual, generally bilateral; hypanthium 0 or flat to tubular; sepals generally 5, generally fused; petals generally 5, free, fused, or lower 2 ± united into keel (see 3, Key to Groups, for banner, wings); stamens 10 or many (or [1], 5, 6, 7, 9), free or fused or 10 with 9 filaments at least partly fused, 1 (uppermost) free; pistil 1, ovary superior, generally 1-chambered, ovules 1–many, style, stigma 1.
Fruit: legume, including a stalk-like base (above receptacle) or not.
Seed: 1–many, often ± reniform, generally hard, smooth.
± 730 genera, 19400 species: worldwide; with grasses, requisite in agriculture, most natural ecosystems. Many cultivated, most importantly Arachis, peanut; Glycine, soybean; Phaseolus, beans; Medicago, alfalfa; Trifolium, clovers; many orns. [Lewis et al. (eds) 2005 Legumes of the World. RBG, Kew] Unless stated otherwise, fruit length incl stalk-like base, number of 2° leaflets is per 1° leaflet. Upper suture of fruit adaxial, lower abaxial. Anthyllis vulneraria L. evidently a waif, a contaminant of legume seed from Europe. Laburnum anagyroides Medik., collected on Mount St. Helena in 1987, may be naturalized. Ceratonia siliqua L., carob tree (Group 2), differs from Gleditsia triacanthos L. in having evergreen (vs deciduous) leaves that are 1-pinnate (vs 1-pinnate on spurs on old stems, 2-pinnate on new stems) with 2–5(8) (vs 7–17) 1° leaflets, commonly cult, now naturalized in s CA. Aeschynomene rudis Benth. <Noxious weed>, Halimodendron halodendron (Pall.) Voss <Noxious weed> (possibly extirpated), Lens culinaris Medik. are agricultural weeds. Caragana arborescens Lam. only cult. Ononis alopecuroides L. <Noxious weed>, Sphaerophysa salsula (Pall.) DC. <Noxious weed> all evidently extirpated. Cercidium moved to Parkinsonia; Chamaecytisus to Cytisus; Psoralidium lanceolatum to Ladeania. —Scientific Editors: Martin F. Wojciechowski, Thomas J. Rosatti.

Key to Fabaceae

Perennial to small tree, generally thorny, gland-dotted, especially stems, generally hairy.
Stem: generally intricately branched.
Leaf: simple or generally odd-1- pinnate, leaflets 1–3, generally more.
Inflorescence: axillary or terminal, raceme, spike- or head-like or not; pedicel bractlets (0)2.
Flower: calyx lobes generally unequal, upper 2 often largest; petals from receptacle, indigo blue to pink-purple; stamens 10, filaments partly fused; ovules generally 2.
Fruit: indehiscent, included in or exserted from calyx, generally glandular.
Seed: 1.
9 species: deserts of sw US, Mex, basins of CO Plateau. (Greek: scabshrub)
Unabridged references: [Barneby 1977 Mem New York Bot Gard 27:21–54, 598–607]

Subshrub < 1 m, < 2 m wide, generally densely canescent, occasionally glabrous in age, twig glands << 0.5 mm wide, red-orange.
Leaf: leaflets of middle leaves 5–9, 2–10 mm, narrowly oblong to obovate, terminal > lateral or not.
Inflorescence: spike-like, ovoid or spheric, dense; pedicel bractlets 0.
Flower: calyx 4–7 mm, lobes ± >= tube; corolla 4–8 mm, 2-colored (purple, white), puberulent.
Fruit: included, ± 2.5–3 mm, glabrous at base, glandular-hairy distally.
2n=20. Desert flats, washes, dunes; < 700 m. s Mojave Desert, Sonoran Desert;

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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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Bioregions in which taxon occurs	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.
Chart based on elevation range in Manual and elevations and coordinates of CCH records. Data provided by the participants of the Consortium of California Herbaria. Note: About half of the CCH records include both elevation and coordinates.	Data provided by the participants of the Consortium of California Herbaria. View all CCH records   CCH collections by month Duplicates counted once; synonyms included. Species do not include records of infraspecific taxa. Blue line denotes Manual flowering time.