Arunachal Pradesh, ‘Bootan’, Oola Mountains, on the southern slopes of the Lablung Pass, 8-9000ft, Booth (holo. K).
Verified by:
Shrub or small tree, c.4m; bark smooth; young shoots glabrous. Leaves broadly oblanceolate, c.12.5 x 5cm, 2.5 x as long as broad, apex rounded, apiculate, base rounded, upper surface glabrous, lower surface glabrous except for large well-developed fasciculate hairs overlying the veins, epidermis epapillate; petioles 1.5-3cm, slightly winged, glabrous. Inflorescence 8-15-flowered, dense; rhachis c.2mm; pedicels 8-15mm, glabrous. Calyx (5-)10-20mm, cupular, greenish to yellowish, glabrous, lobes rounded, erose. Corolla tubular-campanulate, deep rose to crimson, with darker nectar pouches and a few flecks, 35-45mm. Ovary and style glabrous. Capsule 20-25mm.
NE India (Arunachal Pradesh)
Mixed forests
Chamberlain, D.F. (1982) A Revision of Rhododendron II. Subgenus Hymenanthes. Notes From the Royal Botanic Garden Edinburgh 39(2):422