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Indigofera venulosa

Description from Flora of China

Indigofera glabra S. S. Chien (1932), not Linnaeus (1753); I. neoglabra Hu ex F. T. Wang & Tang; I. venulosa var. glauca Hayata.

Shrubs, 30-60 cm tall. Stems terete, glabrous. Stipules mi­nute, caducous. Leaves 10-15 cm, 5-13-foliolate; petiole and rachis terete or adaxially grooved, glabrous; petiole 1.5-3.5 cm; stipels as long as petiolules; petiolules ca. 2 mm; leaflet blades opposite, ovate, ovate-rhombic, or suborbicular, 1.3-2.5 × 1-2.7 cm, abaxially with sparse appressed white medifixed trichomes, adaxially glabrous, midvein adaxially impressed, secondary veins and tertiary veins abaxially obvious, base cuneate to rounded, apex obtuse to acute. Racemes ca. 10 cm, laxly flowered; peduncle 2-3 cm, glabrous; bracts ovate-lan­ceolate, 2-2.5 mm. Pedicel ca. 2.5 mm. Calyx 3-3.5 mm, out­side with sparse appressed medifixed trichomes; tube ca. 2 mm; teeth triangular, 1-1.5 mm. Corolla light purple; standard ob­long to obovate-oblong, 1.2-1.5 cm, base shortly clawed, out­side with appressed white and brown medifixed trichomes, apex obtuse or emarginate; wings narrow, as long as standard, margin ciliate; keel slightly shorter than wings, outside apically hairy, margin ciliate. Stamens 1.1-1.4 cm; anthers ovoid-ellipsoid, both ends hairy. Ovary glabrous. Legume straight, 4-5 cm, glabrous. Seeds 10-12 per legume. Fl. Mar-May, fr. Jul-Aug.

● Valleys, slopes in forests; ca. 500 m. Guangdong, Taiwan, Zhejiang.


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