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Martin F. Wojciechowski, except as noted

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 including 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 cultivated, now naturalized in southern California. Aeschynomene rudis Benth. <Noxious weed>, Halimodendron halodendron (Pall.) Voss <Noxious weed> (possibly extirpated), Lens culinaris Medik. are agricultural weeds. Caragana arborescens Lam. only cultivated. 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


Alfonso Delgado-Salinas

[Annual], perennial herb, vine, unarmed; hairs generally including minute, hooked ones. Leaf: odd-1-pinnate; axis extended beyond basal leaflets, persistent; leaflets 3, entire or lobed. Inflorescence: raceme-like (flowers > 1 per node) [to panicle-like], nodes 1–60, not swollen; bracts, bractlets generally persistent. Flower: calyx lobes < (>) tube; corolla incurved, sickle-shaped in bud, banner oblong to round, in flower recurved 90°, wings twisted into a platform position, keel incurved, tightly, spirally coiled 1.5[2] turns; 9 filaments fused, 1 free; style thickened, ± bristly distally, stigma lateral, turned inward. Fruit: generally dehiscent, linear to oblong rarely rhombic, mostly flat in ×-section. Seed: 1–20, oblong to reniform or rarely discoid.
± 70 species: neotropics, warm regions. (Classical name, presumably for a bean) [Delgado-Salinas et al. 2006 Syst Bot 31:779–791] Phaseolus coccineus L., Phaseolus lunatus L., Phaseolus vulgaris L. in California possibly as waifs from cultivation.

P. filiformis Benth. SLENDER-STEM BEAN
Short-lived perennial herb, trailing or twining vine; taproot slender. Stem: cylindric or angled, branches many at base, lowermost often opposite. Leaf: leaflets generally 1–5 cm, 1–4.5 cm, wide ovate-triangular, generally lobed. Inflorescence: raceme-like, peduncle 1.2–16 cm, nodes 2–6, 2-flowered. Flower: corolla ± 1 cm, pink-purple, keel coil diam ± 2.5 mm. Fruit: 2.5–3.5 cm, 4–5 mm wide, oblong, generally curved, pendant, ± glabrous. Seed: 4–6(7), 2–4 mm, oblong to reniform, wrinkled, net-like.
Washes; ± 125 m. Sonoran Desert (Coachella Valley, Riverside Co.); to western Texas, northern Mexico. Generally Oct–Dec [Online Interchange] {CNPS list}
Unabridged note: Pinacate people (Sonora, Mexico) eat seeds.

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora,, accessed on Mar 28 2015
Citation for this treatment: [Author of taxon treatment] 2013. Phaseolus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on Mar 28 2015

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click for enlargement Phaseolus filiformis
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2004 Debra Valov

Geographic subdivisions indicated for the distribution of Phaseolus filiformis 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.
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.