腺房棕背杜鹃 xian fang zong bei du juan

Rhododendron russotinctum I. B. Balfour & Forrest, Notes Roy. Bot. Gard. Edinburgh 11: 129. 1919; R. triplonaevium I. B. Balfour & Forrest; R. tritifolium I. B. Balfour & Forrest.

Young shoots densely glandular; bud scales ± persistent. Leaf blade 5–9.5 × 1.5–2.5 cm; abaxial surface rust-red, upper indumentum thick, loose, felted, ± deciduous. Ovary densely tomentose and shortly glandular-hairy. Fl. Jun–Jul, fr. Oct.

Coniferous forests, thickets, mountains; 3300–4200 m. SE Xizang, NW Yunnan.