|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
Annual to tree
Leaves generally compound, alternate, stipuled; leaflets generally entire
Inflorescence: generally raceme, spike, umbel or head; flowers sometime 12 in axils
Flowers generally bisexual, generally bilateral; hypanthium generally flat or cup-like; sepals generally 5, fused; petals generally 5, free, or the 2 lower ± fused; stamens 1many, often 10 with 9 filaments at least partly fused, 1 (uppermost) free; pistil 1, ovary superior, generally 1-chambered, ovules 1many, style, stigma 1
Fruit: legume, sometimes including a stalk-like base above receptacle, dehiscent, or indehiscent and breaking into 1-seeded segments, or indehiscent, 1-seeded, and achene-like
Seeds 1several, often ± reniform, generally hard, smooth
Genera in family: ± 650 genera, 18,000 species: worldwide; with grasses, requisite in agriculture and most natural ecosystems. Many cultivated, most importantly Arachis , peanut; Glycine , soybean; Phaseolus , beans; Medicago ; Trifolium ; and many orns
Reference: [Polhill & Raven (eds) 1981 Advances in legume systematics; Allen & Allen 1981 Leguminosae]
Family description and key to genera by Duane Isely.
Stem erect or climbing
Leaves even-1-pinnate; stipules entire or lobed, persistent; main axis ending in a tendril or bristle; leaflets alternate or opposite
Inflorescence: raceme, axillary, 13-flowered near tip
Flower: calyx lobes > tube; corolla pink-white to blue; 9 filaments fused, 1 free; style puberulent on concave side near tip
Fruit dehiscent, elliptic to oblong
Species in genus: ± 5 species: Medit, adjacent regions
Etymology: (Latin: lentil)
Lentil seeds provided the concept of a biconvex "lens"-shape ("lenticular"), from which optical lenses derived their name.
Annual, generally finely hairy
Leaf: leaflets generally 1014, ± 715 mm, narrowly oblong to elliptic
Flower: corolla ± 6 mm
Fruit pendent, 11.4 cm, ovate or oblong, flat
Seeds 12, lenticular
Ecology: Uncommon. Disturbed areas
Elevation: < 2000 m.
Bioregional distribution: Central Western California
Distribution outside California: sporadic in US; native to Old World
Cult, especially WA, ID, for edible seed, the lentil of commerce.