121. Rhododendron pemakoense Kingdon Ward, Gard. Chron., ser. 3. 88: 298. 1930.
假单花杜鹃 jia dan hua du juan
Dwarf shrubs, erect to prostrate, evergreen, 0.3–0.6(–0.8) m tall, scaly, pubescent. Petiole 1–3 mm, sparsely scaly; leaf blade leathery, obovate, oblong-obovate or obovate-elliptic, 1–2(–3) × 0.5–1(–1.5) cm; base cuneate; apex acute or rounded; abaxial surface pale green, scales 0.5–1.5 × their own diameter apart, small, unequal, golden when young, often becoming dark brown; adaxial surface grayish green, usually scaly. Inflorescence 1- or 2-flowered. Pedicel slender, 0.5–1.5 cm, scaly, in fruit to 3.8 cm; calyx reddish purple; lobes 1–2(–4) mm, ovate-lanceolate or oblong, densely scaly, margin long-ciliate; corolla tubular-campanulate or tubular-funnelform, pink to pale purple, purplish mauve, 2.4–3.5 cm, tube slightly longer than corolla lobes; outer surface densely pubescent and sparsely scaly; stamens 10, shorter than corolla, filaments densely pubescent towards base; ovary ovoid, 2–3 mm, densely scaly; style slender, straight, as long as or longer than corolla, base glabrous or sparsely scaly. Capsule cylindric, 6–10 mm, densely scaly. Fl. Apr–Jun, fr. Sep–Oct.
Cliffs, ledges, ravine sides; 2900–3600 m. SE Xizang [NE India].