岷谷木蓝 min gu mu lan

Shrubs, erect, to 1.2 m tall. Stems purplish brown; branches terete, with rufous lenticels, with appressed white medifixed symmetrically 2-branched trichomes. Stipules trian­gular, ca. 1.5 mm. Leaves 1-3 cm, 5-9-foliolate; petiole and rachis with dense appressed white mixed brown medifixed tri­chomes; petiole 2-7 mm; stipels minute; petiolules ca. 0.5 mm; leaflet blades opposite, elliptic to obovate, 3-7 × 2-5 mm, both surfaces with white and brown appressed medifixed trichomes, abaxially with denser trichomes, secondary veins not visible, base rounded to broadly cuneate, apex rounded to truncate and mucronate. Racemes 2.5-4 cm; peduncle 3-10 mm, longer than petioles; bracts ovate, ca. 1.5 mm, caducous. Pedicel ca. 1 mm, reflexed in fruit. Calyx hairy; tube ca. 1 mm; teeth as long as tube. Corolla red; standard broadly elliptic, ca. 7 × 4-4.5 mm, outside hairy; wings and keel ca. 7 mm. Stamens 5-6.5 mm. Legume dark purple, cylindric, 1.2-3 cm, with sparse appressed medifixed trichomes. Fl. May-Jul, fr. Sep-Oct.

● Sunny slopes, valleys, thickets; 1500-3900 m. Sichuan, E Xizang, NW Yunnan.

See the note under the preceding species, Indigofera calcicola.