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FOC | Family List | FOC Vol. 10 | Fabaceae | Crotalaria

2. Crotalaria micans Link, Enum. Hort. Berol. Alt. 2: 228. 1822.

三尖叶猪屎豆 san jian ye zhu shi dou

Crotalaria anagyroides Kunth.

Herbs or shrublets, to 2 m tall. Stems terete, thick, densely rusty appressed pubescent. Stipules acicular, very minute, per­sistent or caducous. Leaves 3-foliolate; petiole 2-5 cm; petio­lules ca. 2 mm; leaflet blades elliptic to narrowly elliptic, 4-7(-10) × 2-3 cm, terminal one larger than lateral ones, thin, veins distinct on both surfaces, midvein abaxially sparsely pilose and adaxially pilose, secondary veins 8-15 on each side of midvein, base cuneate, apex acuminate and mucronate. Racemes termi­nal, 10-30 cm, 20-30-flowered; bracts linear, 0.7-1.3 cm, cadu­cous. Pedicel 5-7 mm; bracteoles similar to bracts but smaller. Calyx subcampanulate, 7-10 mm, 5-lobed, densely rusty silky pilose; lobes broadly lanceolate, ± as long as tube. Corolla yel­low, exserted beyond calyx; standard orbicular, ca. 1.4 cm in diam., base with 2 appendages, apex obtuse to retuse; wings ob­long, ca. 1.3 cm; keel ca. 1 cm, abruptly rounded slightly below middle, beak slightly incurved. Legume oblong, 2.5-4 × 1-1.5 cm, 20-30-seeded, densely pilose when young, glabrescent; stipe 2-4 mm. Seeds black when mature, obliquely cordate, nearly smooth. Fl. May-Sep, fr. Aug-Dec.

Grasslands, slopes, along trails; below 100-2400 m. Cultivated or naturalized in Fujian, Guangdong, Guangxi, Hainan, Taiwan, and Yunnan [native to South America and Mexico].


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