Rhododendron forrestii I. B. Balfour ex Diels
- genus Rhododendron L.
Creeping shrubs, 20-70 cm tall; young shoots ca. 2 mm in diameter below inflorescence; sparsely tomentose and glandular; bud scales persistent. Petiole 4-7 mm long, glandular-hairy and sparsely floccose-tomentose; leaf blade leathery, obovate to orbicular, 1.2-2.4 cm long, 1.2-1.6 cm wide, base broadly cuneate, narrowly decurrent; apex rounded or retuse, sometimes mucronate; abaxial surface purple or green, glandular hairs few or absent; adaxial surface green, glabrous; midrib grooved adaxially; lateral veins 6-7-paired, impressed adaxially. Inflorescence 1-2-flowered. Pedicel 1.5-2 cm, densely glandular-hairy and puberulent; calyx saucer-shaped, fleshy; lobes 5, 1-3 mm, margin glandular-ciliate; corolla tubular-campanulate, crimson, 2.9-3.8 cm, with 5 basal nectar pouches; lobes 5, suborbicular, 0.9 cm long, ca. 1.3 cm wide, emarginate; stamens 10, 1.5-1.7 cm, filaments glabrous; ovary conoid, ca. 4.5 mm, densely glandular-hairy and tomentose; style glabrous; stigma small. Capsule cylindric, ca. 10 mm long, 6-8 mm wide.
Rhododendron forrestii subsp. forrestii is close relative of Rhododendron forrestii subsp. papillatum, but differs from the latter in its leaf blade 1.2-1.6 cm wide (vs. 0.8-1.2 cm), abaxial surface purple or green (vs. glaucous-papillate), glandular haris few or absent (vs. conspicuous).
Ecology and Distribution
Flowering from May to July; fruiting from October to November.
Rhododendron forrestii is occurring in SE Xizang and NW Yunnan of China, NE Myanmar.
Growing in moist stony pastures, rocky slopes; 3000-4100 m.