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FOC | Family List | FOC Vol. 14 | Ericaceae | Rhododendron

180. Rhododendron asperulum Hutchinson & Kingdon Ward in J. B. Stevenson, Sp. Rhodod. 818. 1930.

瘤枝杜鹃 liu zhi du juan

Small shrubs, sometimes epiphytic, ca. 0.6 m tall; young shoots densely papillate, scaly. Petiole 2–3 mm, scaly; leaf blade leathery, oblong-obovate, 2–3.5 × 1–2 cm; base cuneate; margin revolute; apex rounded, emarginate, apiculate; abaxial surface scales 2–3(–5) × their own diameter apart, small or midsized, unequal, glandular, brown; adaxial surface dark or fresh green, scaly or not; lateral veins concave. Inflorescence terminal, umbellate, 1–3-flowered. Pedicel 1.3–2.2 cm, scaly; calyx deeply 5-lobed; lobes 2–4 mm, ovate or oblong, scales sometimes present at base abaxially; corolla shortly campanulate, pale pink, 0.7–0.8 cm, outer surface scaly; stamens 10, unequal, as long as or shorter than corolla; filaments pubescent in the lower 2/3; anthers orange-yellow; ovary 5-locular, densely scaly, glabrous; style stout, erect or arched, shorter than stamens; base scaly. Capsule long and slender, dehiscing from top, 20–25 × ca. 3 mm.

Epiphytic on evergreen trees or on trees in open grassland, moss-covered rocks; 1400–2200 m. SE Xizang, W Yunnan [Myanmar].


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