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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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FABACEAE

LEGUME FAMILY

Annual to tree
Leaves generally compound, alternate, stipuled; leaflets generally entire
Inflorescence: generally raceme, spike, umbel or head; flowers sometime 1–2 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 1–many, often 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, 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 1–several, 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.

LOTUS

Duane Isely

Annual, perennial herb, shrub, unarmed
Leaves generally odd-1-pinnate (sometimes ± palmately compound, rarely some or most simple); stipules conspicuous or not; leaflets 3–many, often irregularly arranged
Inflorescence: umbel or 1–2-flowered, axillary, generally peduncled, often bracted
Flower: corolla generally yellow (sometimes white or pink), fading darker; 9 filaments fused, 1 free
Fruit dehiscent or not, exserted from calyx or not, ovoid to oblong, ± beaked
Seeds 1–several
Etymology: (Greek: derivation unclear)
Reference: [Isely 1981 Mem New York Bot Garden 25:128–206]
Spp. generally variable; intermediates may be hybrids. Key below separates natural groups.

Native

L. procumbens (Greene) Greene

Perennial or stiff subshrub, puberulent or strigose, often gray
Stem decumbent to erect, generally much-branched, < 1 m
Leaf subpalmate; stipules gland-like; leaflets generally 3, 4–12 mm, oblanceolate to obovate
Inflorescence 1–3-flowered; peduncle 0 or < 3 mm, bract 0
Flower: calyx 2–6 mm, strigose, lobes << or ± = tube; corolla 6–12 mm, yellow or with red, wings > keel
Fruit indehiscent, exserted, pendent, 1–1.5 cm, initially curved, then generally straight
Seeds 2–3
Ecology: Chaparral to pine forest, open slopes, ridges, flats, roadsides
Elevation: < 2300 m.
Bioregional distribution: s Sierra Nevada, Sacramento Valley, South Coast Ranges, Transverse Ranges, Peninsular Ranges, Mojave Desert.

Native

var. procumbens


Flower: calyx 2–3 mm, lobes << tube; corolla 6–8 mm
Ecology: Chaparral to Jeffrey-pine forest, sandy flats and slopes, roadsides
Elevation: < 2300 m.
Bioregional distribution: Sacramento Valley, South Coast Ranges, Transverse Ranges, Peninsular Ranges, Mojave Desert
Flowering time: Apr–Jun
Stiff subshrubs are found especially in Los Angeles Co.

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bioregional map for LOTUS%20procumbens%20var.%20procumbens being generated
 
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Retrieve Jepson Interchange Index to Plant Names entry for Lotus procumbens var. procumbens
Retrieve dichotomous key for Lotus
Overlay Consortium of California Herbaria specimen data by county on this map
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