斑玛杜鹃 ban ma du juan

Small, erect shrubs, ca. 0.6 m tall; branches of current year densely black-scaled. Petiole ca. 0.5 mm, scaly; leaf blade elliptic or ovate, 0.4–0.6 × 0.15–0.25 cm; base cuneate to rounded; apex rounded; abaxial surface yellow-green, scales overlapping, 2-colored, pale yellow and brown intermixed; adaxial surface dark green, scales slightly overlapping, yellow. Inflorescence 1-flowered. Calyx lobes ca. 0.5 mm, triangular, densely scaly, margin not ciliate; corolla broadly funnelform, deep blue, 0.4–0.5 cm, outer surface glabrous, throat pubescent; stamens 10, 0.4–0.8 cm, filaments pubescent towards base; ovary ca. 2 mm, densely scaly; style ca. 8 mm, longer than stamens. Fl. Jun.

Forests; ca. 4300 m. SE Qinghai.