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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
Perennial herb, unarmed. Leaf: odd-1-pinnate; stipules scarious or leaflet-like, fragile or not, early-deciduous; leaflets 3–15, often ± opposite. Inflorescence: several-flowered umbel or 1–2-flowered, axillary, generally peduncled, often bracted. Flower: corolla yellow, white, or pink, fading darker; 9 filaments fused, 1 free. Fruit: dehiscent, exserted from calyx, linear to oblong, ± beaked. Seed: few–several.Key to Hosackia
± 11 species: southwestern Canada, western United States, Mexico to Guatemala, especially California. (D. Hosack, New York physician, botanist, mineralogist, 1769–1835) [Brouillet 2008 J Bot Res Inst Texas 2:387–394] Pollen apertures 3. Intermediates may be hybrids.
Unabridged references: [Isely 1981 Mem New York Bot Gard 25:128–206]
Often robust. Stem: sprawling or erect, 7–15 dm, base hollow. Leaf: stipules scarious, inconspicuous; leaflets 9–15, 2–3 cm, elliptic or obovate, length generally 1–2.5 × width, abaxially pale. Inflorescence: generally 12–20-flowered; peduncle bract 0 or generally well below umbel, (1)3–5-parted; pedicels generally 3–6 mm, > 3 mm at least in fruit. Flower: calyx 5–8 mm, lobes < tube; corolla 12–17 mm, yellow-green, dark-blotched in age, claw exserted from calyx tube. Fruit: 3.5–7 cm, 3–5 mm wide, oblong, glabrous. Seed: several.
2n=14. [Online Interchange]
Previous taxon: Hosackia
Next taxon: Hosackia crassifolia var. crassifolia
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Apr 20 2014
Citation for this treatment: [Author of taxon treatment] 2012. Hosackia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=28438, accessed on Apr 20 2014
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