35. Rhododendron walongense Kingdon Ward, Gard. Chron., ser. 3. 133: 5. 1953.
瓦弄杜鹃 wa nong du juan
Small trees or large shrubs, sometimes epiphytic, 2–3 m tall; branches scaly, otherwise glabrous. Petiole grooved, 8–10 mm, densely scaly, glabrous or sparsely hispid; leaf blade leathery, oblong-lanceolate, oblanceolate, or oblong-elliptic, 10–13 × 3–4.4 cm; base cuneate; apex acute or acuminate, apiculate; abaxial surface pale gray-green or pale green, scales 1–3 × their own diameter apart, large, brown or darker; adaxial surface deep green, without scales; midrib and lateral vein raised; lateral veins 10–14-paired, concave. Inflorescence terminal, cymose, 3–6-flowered; rachis 2–3 mm, scaly and pubescent. Flowers fragrant. Pedicel stout, 0.8–1.5 cm, densely scaly, without hairs; calyx undeveloped, ca. 1 mm, scaly, margin sometimes long ciliate; corolla funnelform, creamy yellow or creamy white, with green markings inside, 6–7 cm, lobes lacking or 5; stamens 10, unequal, 3.5–5 cm, filaments densely pubescent below; ovary truncate at apex, 6-locular, densely scaly, glabrous; style 6–7 cm, longer than corolla, basal half scaly. Capsule cylindric-elliptic, base oblique, ca. 17 × 8–9 mm, densely scaly.
Valley forests, mixed forests on rocky slopes, cliffs; 1500–2200 m. S Xizang [NE India].