TREATMENT FROM THE JEPSON MANUAL (1993) |
previous taxon |
next taxon
Jepson Interchange (more information) |
|
©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, shrub, small tree, generally with thorns, gland-dotted
Stem generally intricately branched
Leaves odd-1-pinnate or simple
Inflorescence: raceme, sometimes spike- or head-like, axillary or terminal; pedicels generally with bractlets
Flower: calyx lobes generally unequal, upper pair often largest; petals all arising from receptacle, violet, blue, or 2-colored (purple and white); stamens 10, filaments partly fused; ovules generally 2
Fruit indehiscent, included in or exserted from calyx, generally glandular
Seed 1
Species in genus: 9 species: sw US, Mex
Etymology: (Greek: scabshrub)
Reference: [Barneby 1977 Mem New York Bot Garden 27:2154, 598607]
Native |
Shrub or tree 1.58 m, gray-canescent
Leaf simple, early deciduous, 0.52 cm, oblanceolate, thick, gland-dotted
Inflorescence: raceme, generally dense, 515-flowered; axis extended beyond flowers, generally as a thorn; pedicels ± 1 mm
Flower: calyx 4.55 mm, lobes < tube; corolla 68 mm, blue-purple
Fruit slightly exserted
Chromosomes: 2n=10
Ecology: Common. Desert washes
Elevation: < 400 m.
Bioregional distribution: Desert
Distribution outside California: Arizona, nw Mexico
Flowering time: JunJul
Synonyms: Dalea s. A. Gray
Horticultural information: DRN: 12, 13.