高尚大白杜鹃 gao shang da bai du juan

Rhododendron diaprepes I. B. Balfour & W. W. Smith, Notes Roy. Bot. Gard. Edinburgh 10: 100. 1917; R. rasile I. B. Balfour & W. W. Smith.

Petiole 24–40 mm; leaf blade oblong to oblong-obovate, 12–19(–30) × 4.4–11 cm; base rounded. Corolla (6.5–)8–10 × ca. 9 cm, lobes 6–8, emarginate; stigma 3–5(–6.5) mm in diam.

Evergreen forests, mixed forests; 1700–3300 m. SW Sichuan, W Yunnan [Myanmar].