TREATMENT FROM THE JEPSON MANUAL (1993) |
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©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora. |
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.
Perennial, unarmed, hairy
Leaves odd-1-pinnate, basal, sometimes also cauline; stipules generally partly fused to petiole, initially forming a sheath, or free
Inflorescence: raceme, generally scapose, spike- or head-like, or 12-flowered; bracts generally persistent
Flower: calyx lobes < tube; corolla pink-purple, white, or yellowish, keel tip beaked; 9 filaments fused, 1 free; style glabrous
Fruit ascending or reflexed, generally persistent, lanceolate or inflated, ± 2-chambered, septum arising from upper suture, ± incomplete
Species in genus: ± 300 species: Eurasia, North America
Etymology: (Greek: sharp keel)
Reference: [Barneby 1952 Proc Calif Acad Sci Series IV 27:177309]
Seriously TOXIC: causes "staggers" in livestock, mostly outside CA .
Native |
Plant green, puberulent, glandular-sticky, sometimes tiny and cespitose
Leaves basal; leaflets 2339, 310 mm, oblong-lanceolate to ovate, flat or folded
Inflorescence spike-like, exserted, sometimes longer in fruit; flowers 4many, ascending or erect
Flower: corolla 1218 mm, red-purple or pale
Fruit ascending or erect, 814 mm, lanceolate to ovate in outline, somewhat inflated, papery, slightly 2-chambered; stalk-like base 0
Ecology: Aspen meadows to alpine
Elevation: 12003900 m.
Bioregional distribution: s High Sierra Nevada, White and Inyo Mountains
Distribution outside California: circumboreal
Synonyms: O. viscida Nutt
Horticultural information: TRY.