Volume 13 > Part 1 > Year 2015 > Page 132 > Ericaceae > Rhododendron

9. Rhododendron veitchianum Hook.wfo-0000405708

Bot. Mag. T. 4992. 1857; C.B.Clarke, Fl. Brit. India 3: 473. 1882; Craib, Bull. Misc. Inform. Kew 1911: 405. 1911; Dop, Fl. Indo-Chine [P.H. Lecomte et al.] 3: 741. 1930; Hutch., Notes Roy. Bot. Gard. Edinburgh 12: 76. 1919; Fl. Siam 3: 319. 1938; Sleumer, Blumea, Suppl. 4: 46. 1958; Dansk Bot. Ark. 23(1): 81. 1963; Cullen, Notes Roy. Bot. Gard. Edinburgh 39(1): 55. 1980.— R. formosum var. veitchianum (Hook.) Kurz, J. Asiat. Soc. Bengal 46(2): 276. 1887. Fig. 7; Plate XIV: 3–5.

Accepted Name : This is currently accepted.

Synonyms & Citations :

Description : Epiphyte or shrub, evergreen, 2–3 m tall; stem and branches with distinct scars; young branches covered by reddish-brown hairs. Leaves in pseudowhorled of 3–7, obovate, obovate-elliptic, 6–8 by 2.8–4 cm; dark green and sparsely scaly above, with distant scales beneath; base cuneate or rounded; margin entire; apex (short-) acuminate; midrib grooved above, prominent beneath, veins 8–10 on each side of midrib; petioles 0.8–1 cm, grooved, reddish-green, scaly, without hairs. Inflorescences subumbelliform, 2–5-flowered; floral buds ovoid, ca 2 cm long, composed of ovoid bracts, ciliate outside, with brown scales in the middle. Flowers pale green when young, then white, fragrant; pedicels 8–12 mm long, scaly. Calyx disc-shaped; 5-lobed, unequal, 7–12 mm long, green scaly, ciliate with few setose hairs. Corolla funnel-shaped, 7–10 cm long; tube 3.4–4.5 cm, 5-lobed; lobes rounded, 4–4.5 by 4 cm, undulate, with yellow or greenish-yellow spots forming a patch. Stamens 10, unequal, 5–7 cm; filaments white, hairy in the lower half; anthers 4–5 mm long, pale brown. Ovary ovoid, 5-lobed, densely scaly, 5–7 by 3–4 mm; styles 7–8.3 cm long, scaly at the base; stigma capitate. Capsules ovoid-oblong, 3–4 by 1–1.2 cm, scaly, rough. Seeds small.

Thailand : NORTHERN: Chiang Mai (Doi Suthep, Doi Inthanon, Khun Mae Lan, Doi Khun Huai Pong); SOUTH-WESTERN: Kanchanaburi (Khao Ri Yai).

Distribution : Myanmar (type), Laos.

Ecology : In montane forests, on mossy ground, 1,600–2,500 m alt. Flowering: January–April.

Vernacular : Kayom (กายอม)(Chiang Mai).