Rhododendron yunnanense Franch.

Bull. Soc. Bot. Fr. 33:232 (1886)

WFO ID: wfo-0001048096

IPNI ID: urn:lsid:ipni.org:names:333632-1

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Description

Shrub, (0.3—)1—6 m. Young growth lepidote and sometimes loriform-setose, the setae quickly deciduous. Leaves evergreen, subdeciduous or completely deciduous, narrowly elliptic to elliptic, (30-)35-70 x 12-20 mm, apex acute, base cuneate, usually elepidote above, beneath with flat scales 3-5 x their own diameter apart; petiole and upper surface of midrib usually puberulent; petiole, leaf margin and also the leaf upper surface densely to sparsely loriform-setose, at least when young, the setae variably deciduous. Inflorescence loose, pedicels (8-) 11-18 mm. Calyx minute, disc-like, lepidote, ciliate with loriform and/or filiform-acicular hairs, rarely glabrous. Corolla (21-)25-31 mm, white, pink or lavender, usually densely spotted with red or yellow, ± elepidote outside. Capsule 12-17 mm.

Distribution

NE Burma, China (N, NW & W Yunnan, SW & NW Sichuan, Guizhou)

Altitude

Habitat

Scrub, thickets, and forests, also on forest margins and sometimes on cliffs and in meadows

Nomenclatural History

R. chartophyllum Franchet, Journ. de Bot. 9:398 (1895). Type: China, Yunnan, sur le mont

Hee-chan-men, Delavay 4393 (holo. P—n.v., iso. E). R, chartophyllum forma praecox Diels, Notes

R.B.G. Edinb. 5:217 (1912). Type: China, Yunnan, ascent of Sung kwei pass from Lankong valley,

9000 ft, iv 1906, Forrest 2030 (holo. E). R. hormophorum Balfour f. & Forrest, Notes

R.B.G. Edinb. 12:117 (1920). Type: China, SW Szechuan, Muli mountains, valley of the Litang,

11000 ft, Forrest 16265 (holo. E). R. aechmophyllum Balfour f. & Forrest, ibid. 13:226

(1926). Type: China, SW Szechuan, Muli mountains, 13-12000 ft, viii 1918, Forrest 16790 (holo.

E). R. suberosum Balfour f. & Forrest, op. cit. 301. Type: China, W Yunnan, E flank of

the N’Maikha/Salween Divide, 12-13000 ft, Forrest 18000 (holo. E)

Notes

References

Cullen, J. (1980) A Revision of Rhododendron 1: Subgenus Rhododendron sections Rhododendron & Pogonanthum. Notes from the Royal Botanic Garden Edinburgh 39(1):67