16. Rhododendron subsect. Glauca (Hutchinson) Sleumer, Bot. Jahrb. Syst. 74: 530. 1949.
苍白杜鹃亚组 cang bai du juan ya zu
Yang Hanbi (杨汉碧 Yang Han-pi); David F. Chamberlain
Rhododendron ser. Glauca Hutchinson in J. B. Stevenson, Sp. Rhodod. 293. 1930 ["Glaucum"].
Shrubs, 0.25–2 m tall; bark often coppery, smooth and flaking; young shoots scaly. Leaves small; leaf blade leathery, aromatic, usually lanceolate to obovate; abaxial surface white or pale glaucous, scales sparse to almost contiguous, dimorphic, the smaller golden, more numerous than the dark brown larger; adaxial surface usually sparsely scaly. Inflorescence terminal, umbellate or racemose, 3–10-flowered; pedicels slender, scaly; calyx 3–10 mm, deeply 5-lobed, scaly, margin usually ciliate; corolla ± campanulate, lobes spreading, white, pink, purple, or yellow, sometimes spotted; stamens 10, nearly as long as corolla; filaments pubescent; ovary 5-locular, mostly densely scaly; style short, stout, usually sharply deflexed, sometimes scaly and/or puberulous at base. Capsule ovoid to cylindric-ovoid, 4–10 mm, scaly. Seeds wingless, with obscure appendages.
Six species: Bhutan, China, India, Myanmar, Nepal, Sikkim; five species (one endemic) in China.