心叶木蓝 xin ye mu lan

Herbs, procumbent or ascending, 10-30 cm tall. Stems with appressed to slightly spreading white symmetrically to slightly asymmetrically 2-branched trichomes. Stipules lanceo­late, ca. 2 mm, with spreading subbasifixed extremely asym­metrically 2-branched trichomes, apex cuspidate. Leaves sim­ple; petiole ca. 1 mm; leaf blade oblong to cordate, 4-8 × 3-6 mm, abaxially with dense long spreading subsymmetrically to symmetrically 2-branched trichomes, adaxially with long spreading white subbasifixed trichomes, secondary veins not visible, base cordate, apex acute and with a ca. 0.2 mm mucro. Racemes 2-3 mm, 1-4-flowered; bracts narrowly triangular, ca. 2 × 0.5 mm, apex cuspidate. Pedicel 0-0.5 mm. Calyx with dense spreading white subbasifixed long trichomes; tube ca. 0.5 mm; teeth linear-triangular, 1.5-2 mm. Corolla standard spat­ulate to cuneate, 2.5-3 × 1-1.5 mm, outside hairy at apex, apex obtuse; wings ca. 2.5 × 0.2 mm, glabrous; keel ca. 2.5 × 0.5 mm, glabrous, lateral spur ca. 0.3 mm. Stamens 2-2.5 mm; an­thers ca. 0.2 × 0.3 mm, glabrous. Ovary with spreading white long trichomes, with (1 or)2 ovules. Legume ellipsoid to sub­globose, 2.5-3 × ca. 1.6 mm, with densely subspreading white trichomes. Seeds (1 or)2 per legume, reddish brown. Fl. Oct-Nov, fr. Nov-Dec. 2n = 16.

Sunny slopes; 100-400 m. Guangdong [Afghanistan, India, Indo­nesia, Pakistan; NE Africa, SW Asia, N Australia].