棕背川滇杜鹃 zong bei chuan dian du juan

Rhododendron dictyotum I. B. Balfour ex Tagg, Notes Roy. Bot. Gard. Edinburgh 15: 309. 1927.

Leaf blade 5–12 × 2.5–5 cm; apex acuminate; abaxial surface red-brown with thick, felted indumentum, hair arms long and ribbonlike. Corolla 4–5 cm; ovary densely floccose. Fl. Jun, fr. Aug.

Coniferous forest margins, Rhododendron thickets, rocky slopes; 3300–4200 m. SE Xizang, NW Yunnan.