Description

Shrub or tree, 2-8 m. Leaves ovate to ovate-elliptic, 10-20 x 4-10 cm, 1.7-2.5 x as long as broad, apex rounded, mucronate, base cordate, margin often undulate when dry, lower surface with scattered minute punctulate hair-bases and with a few stipitate glands towards the base, otherwise glabrous; petioles 2.5-5.5 cm, glabrous. Inflorescence 5-8-flowered; rhachis stout, 40-50 mm; pedicels 25-30 mm, stipitate-glandular or glabrous. Calyx c. 1 mm, lobes ± stipitate-glandular or glabrous. Corolla 6—7-lobed, cam-panulate, glabrous or ± glandular outside, sometimes puberulent within at base, white, without flecks, 45-60 mm. Stamens c. 14, filaments glabrous. Ovary and entire style glandular. Capsule c. 30 x 12 mm.

Distribution

China (Sichuan-Mt. Omei)

Altitude

Habitat

Woods, etc.

Nomenclatural History

R. chengianum Fang, PI. Omeiens. 1: t.31 (1942). Syntypes: China, Sichuan, Mt Omei, Hung-chun-ping, 1200 m, 1933, Tu 130, 950; 7x1940, Lee 3702 (n.v.)

Notes

References

Chamberlain, D.F. (1982) A Revision of Rhododendron II. Subgenus Hymenanthes. Notes From the Royal Botanic Garden Edinburgh 39(2):235