Rhododendron siderophyilum Franch.

Journ. de Bot. 12:262 (1898)

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Description

Shrub, 1-7 m. Young growth brownish. Leaves broadly elliptic to elliptic, rarely obovate or ovate, 48-84 x (16-)24-32 mm, apex acute, base cuneate (rarely with rounded apex and base on fast-growing extension shoots), ± elepidote above, with a dense covering beneath of large, flat, broadly rimmed scales (the darker centre making up less than Vi the diameter of the scale), 1-2 x their own diameter apart. Inflorescences very dense and crowded, coalescing into a many-flowered compound inflorescence, pedicels lepidote, 5-11 mm, the outer ones recurved, particularly in fruit. Corolla white or pinkish violet, 18~22(-25) mm, elepidote outside. Capsule 11-14 mm

Distribution

China (C & S Yunnan, Guizhou). Open ridges and dry, wooded hills, 840-2100(-2600) m

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Habitat

Nomenclatural History

R. rubro-punctatum Leveille & Vant., Feddes Rep. 9:448 (1911). Type: China, Kouy tcheou, Pin-fa, 1908, Cavalerie (holo. E). R. leucandrum Leveille, ibid. 12:103 (1913). Type: China, Kouytcheou, Kiao-tche che, 1902, Cavalerie 1254 at least in part (E). R. jahandiezii Leveille, ibid. 13:340 (1914). Type: China, Yunnan, flancs du lo chan, 3200 m, v 1913, Maire (holo. E). R. ioanthum Balfour f., Notes R.B.G. Edinb. 13:270 (1922). Type: China, Yunnan, Maire (holo. E). R. obscurum [Franchet ex] Balfour f., op. cit.: 278. Type: China, Yunnan, prope Yunnansen, 4 iii 1891, Delavay (holo. P, iso. 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