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8. Rhododendron subsect. Saluenensia (Hutchinson) Sleumer, Bot. Jahrb. 74: 534. 1949.

怒江杜鹃亚组 nu jiang du juan ya zu

Fang Ruizheng (方瑞征 Fang Rhui-cheng); David C. Chamberlain

Rhododendron ser. Saluenensia Hutchinson in J. B. Stevenson, Sp. Rhodod. 587. 1930 ["Saluenense"].

Small shrubs, erect or creeping, 0.05–1.5 m tall; young shoots scaly, scales sessile or stalked, strap-shaped setae sometimes present. Leaf blade leathery; abaxial surface scales overlapping, often stalked, in 2 or more layers, brown or orange-pink; veins sometimes with strap-shaped setae; adaxial surface scaly or not. Inflorescence terminal, umbellate, 1–3(–5)-flowered; pedicels densely scaly, otherwise glabrous or hispid; calyx large, often tinged with red, 3–9 mm, 5-lobed to base, hairy on the margin; corolla broadly funnelform-campanulate to campanulate, purple, purplish red or deep red, often with darker spots inside, outer surface scaly or not, pubescent; stamens 10; ovary 5-locular, sometimes pubescent; style often longer than stamens, glabrous or pubescent at base. Capsule ovoid, 4–8 mm, surrounded by persistent calyx. Seed wingless.

Four species: China, India, Myanmar; four species (one endemic) in China.

1 Young shoots, petioles, and pedicels densely hispid, with strap-shaped setae.   113 Rhododendron saluenense
+ Young shoots, petioles, and pedicels not densely hispid, strap-shaped setae absent.   (2)
2 (1) Leaf blade oblong-elliptic or ovate-elliptic, 1.5–3 × 0.8–1.8 cm, base obtuse, apex obtuse, adaxial surface densely lepidote; pedicels 0.8–1.5 cm; erect shrubs.   (3)
+ Leaf blade ovate, elliptic, or elliptic-lanceolate, 0.6–2 × 0.3–1 cm, base cuneate, apex acute, rarely obtuse, adaxial surface sparsely lepidote or not; pedicels 1.5–3.2 cm; creeping small shrubs.   116 Rhododendron keleticum
3 (2) Leaf blade 0.5–2.5 cm, abaxial surface with scales not flattened, in 3–5 tiers.   114 Rhododendron calostrotum
+ Leaf blade (1.2–)1.8–3.8 cm, abaxial surface with scales flattened, in 2 or 3 tiers.   115 Rhododendron riparioides

Lower Taxa


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