|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.
Annual or perennial herb, unarmed, glabrous or hairy, rarely glandular, generally rhizomed
Stem sprawling, climbing, or erect; stem angled, flanged, or winged
Leaves even-1-pinnate; stipules persistent, upper lobe > lower; main axis ending as a tendril or short bristle; leaflets 016, ± opposite or alternate, linear to widely ovate
Inflorescence: raceme, generally axillary, 1many-flowered
Flower: upper calyx lobes generally < and wider than lower; corolla 830 mm, pink-purple or pale, sometimes white or yellow; 9 filaments fused, 1 free; style flat, finely hairy on concave side
Fruit dehiscent, oblong, ± flat
Species in genus: ± 150 species: temp North America, Eurasia
Etymology: (Ancient Greek name)
Reference: [Broich 1987 Syst Bot 12:139153]
Some species variable, intergrading with others; some hybridization probable.
Seeds of most alien species. TOXIC to humans (especially young males) and livestock (especially horses).
Perennial, glabrous or puberulent
Stem often sharply angled or flanged
Leaf: stipules small and entire to wide and wavy-margined; leaflets 812, 24.5 cm, linear to elliptic; tendril branched, coiled
Inflorescence 815-flowered, often dense
Flower: calyx tube < or > lower lobes, which in some phases may be slightly wider above base; corolla 1420 mm, generally purple or lavender, sometimes white; banner bent or reflexed ± 90° or more
Fruit glabrous or initially puberulent
Ecology: Chaparral, oak woodland, coniferous or mixed forest
Elevation: < 1500 m.
Bioregional distribution: North Coast, Klamath Ranges, North Coast Ranges, Central Western California, Southwestern California.Intergrading complex of taxa and local variants (see Broich).