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FABACEAE (Leguminosae) LEGUME FAMILY

Martin F. Wojciechowski, except as noted

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 [1], 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

OXYTROPIS LOCOWEED, OXYTROPE
Perennial herb, unarmed, hairy. Leaf: odd-1-pinnate, generally basal; stipules generally partly fused to petiole, initially forming a sheath, or free. Inflorescence: raceme, generally scapose, spike- or head-like or not, or 1–2-flowered; bracts generally persistent. Flower: calyx lobes < tube; corolla pink-purple, white, or ± yellow, keel tip beaked; 9 filaments fused, 1 free; style, stigma glabrous. Fruit: erect to reflexed, generally persistent, oblong to lanceolate, ± inflated, ± 2-chambered, septum from upper suture, partial to complete.
± 350 species: Eurasia, North America. (Greek: sharp keel) Seriously TOXIC: causes "staggers" in livestock, mostly outside California. [Welsh 2001 Revision N Amer Oxytropis. E.P.S.]
Unabridged references: [Barneby 1952 Proc Calif Acad Sci Series IV 27:177–309; Welsh 2001 Revision of North American species of Oxytropis de Candolle (Leguminosae), E.P.S., Orem, UT]

Key to Oxytropis

O. deflexa (Pall.) DC. var. sericea Torr. & A. Gray BLUE PENDENT-POD OXYTROPE
NATIVE
Plant green or gray. Stem: few to several. Leaf: basal and generally 1–3 cauline; stipules free to fused around petiole, 7–20 mm; leaflets 15–31, 3–20 mm, lanceolate to ovate, flat or folded. Inflorescence: spike-like, open; flowers 10–25, quickly reflexed; peduncle generally > 15 cm, often curved. Flower: corolla 5–10 mm, dull white to pale lilac or blue, ± >= calyx. Fruit: reflexed, 3–4.5 cm, elliptic or oblong, membranous or papery, incompletely 2-chambered; stalk-like base generally short.
2n=16. Moist meadows, forest openings; 2800–3200 m. White and Inyo Mountains (White Mtns, Mono Co.); to Alaska, Montana, Utah, northern New Mexico. Jun–Aug [Online Interchange] {CNPS list}

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 24 2014
Citation for this treatment: [Author of taxon treatment] 2013. Oxytropis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=62806, accessed on Oct 24 2014

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Geographic subdivisions indicated for the distribution of Oxytropis deflexa var. sericea Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.