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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Annual to tree. Leaf: generally alternate, generally compound, generally stipuled, generally entire, pinnately veined Inflorescence: generally raceme, spike, umbel or head; or flowers 1–few in axils. Flower: generally bisexual, generally bilateral; hypanthium 0 or flat to tubular; sepals generally 5, generally fused; petals generally 5, free, fused, or lower 2 ± united into keel (see 3, Key to Groups, for banner, wings); stamens 10 or many (or , 5, 6, 7, 9), free or fused or 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, including a stalk-like base (above receptacle) or not. Seed: 1–many, often ± reniform, generally hard, smooth.
± 730 genera, 19400 species: worldwide; with grasses, requisite in agriculture, most natural ecosystems. Many cultivated, most importantly Arachis, peanut; Glycine, soybean; Phaseolus, beans; Medicago, alfalfa; Trifolium, clovers; many orns. [Lewis et al. (eds) 2005 Legumes of the World. RBG, Kew] Unless stated otherwise, fruit length including stalk-like base, number of 2° leaflets is per 1° leaflet. Upper suture of fruit adaxial, lower abaxial. Anthyllis vulneraria L. evidently a waif, a contaminant of legume seed from Europe. Laburnum anagyroides Medik., collected on Mount St. Helena in 1987, may be naturalized. Ceratonia siliqua L., carob tree (Group 2), differs from Gleditsia triacanthos L. in having evergreen (vs deciduous) leaves that are 1-pinnate (vs 1-pinnate on spurs on old stems, 2-pinnate on new stems) with 2–5(8) (vs 7–17) 1° leaflets, commonly cultivated, now naturalized in southern California. Aeschynomene rudis Benth. <Noxious weed>, Halimodendron halodendron (Pall.) Voss <Noxious weed> (possibly extirpated), Lens culinaris Medik. are agricultural weeds. Caragana arborescens Lam. only cultivated. Ononis alopecuroides L. <Noxious weed>, Sphaerophysa salsula (Pall.) DC. <Noxious weed> all evidently extirpated. Cercidium moved to Parkinsonia; Chamaecytisus to Cytisus; Psoralidium lanceolatum to Ladeania. —Scientific Editors: Martin F. Wojciechowski, Thomas J. Rosatti.
Key to Fabaceae
Annual, perennial herb, shrub, unarmed. Leaf: generally odd-1-pinnate (or ± palmately compound, rarely some or most simple); stipules often gland-like, bump-like, or conic, often not apparent; leaflets 3–9, generally irregularly arranged, lowest not stipular in position. Inflorescence: umbel or 1–2-flowered, axillary, generally peduncled, often bracted. Flower: corolla generally yellow (white, pink), fading darker; 9 filaments fused, 1 free. Fruit: dehiscent or not, exserted from calyx or not, ovoid to oblong, ± beaked. Seed: 1–several.Key to Acmispon
± 23 species: southwestern Canada, western United States, Mexico, 1 sp. in Chile. (Greek: tip, probably for hooked-tipped fruit) [Brouillet 2008 J Bot Res Inst Texas 2:387–394] Intermediates may be hybrids.
Unabridged etymology: (Greek acme, point, apex, probably for the hooked-tipped fruit)
Unabridged references: [Isely 1981 Mem New York Bot Gard 25:128–206; Sokoloff 2000 Ann Bot Fenn 37:125–131]
Unabridged note: Pollen has 4(7) apertures.
Annual, often fleshy, glabrous or strigose. Stem: clustered, prostrate or ascending, 0.5–5 dm. Leaf: irregularly pinnate; stipules generally not apparent; leaflets 3–7, 5–15 mm, obovate to ± round; axis flat, ± blade-like. Inflorescence: generally 2–4-flowered (1st formed often 1–2-flowered, fruit often only 1), peduncle 5–15 mm, bracted or not. Flower: calyx lobes < tube, strigose; corolla bright yellow; stigma glabrous. Fruit: dehiscent, ascending, exserted, generally 1.5–3 cm, narrowly oblong, often curved, flat, occasionally with small horn-like processes; beak hooked, 0.5–1.5 mm. Seed: 5–9.
2n=14. [Lotus salsuginosus Greene] [Online Interchange]
Flower: calyx 3–4 mm; corolla 6–10 mm, keel ± = other petals. Fruit: 1.5–3 cm, not narrowed between seeds.
Coastal scrub, foothill woodland, washes, talus; < 1200 m. Central Western California, Southwestern California, Sonoran Desert; Mexico. [Lotus salsuginosus var. salsuginosus] Mar–Jun [Online Interchange]
Previous taxon: Acmispon maritimus var. brevivexillus
Next taxon: Acmispon micranthus
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Jul 29 2014
Citation for this treatment: [Author of taxon treatment] 2013. Acmispon, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=91823, accessed on Jul 29 2014
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