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FOC | Family List | FOC Vol. 14 | Ericaceae | Rhododendron

390. Rhododendron roxieoides D. F. Chamberlain, Notes Roy. Bot. Gard. Edinburgh. 39: 478. 1982.

巫山杜鹃 wu shan du juan

Shrubs, ca. 2.5 m tall; young shoots densely tawny to gray woolly-tomentose; bud scales persistent. Petiole 5–10 mm, densely woolly-tomentose; leaf blade thickly leathery, linear to narrowly oblanceolate, 5.5–7.5 × 1–1.8 cm; base cuneate; margin conspicuously revolute; apex acuminate; abaxial surface with indumentum 2-layered, upper layer chestnut, thickly woolly, hairs branched, lower layer whitish and compacted; adaxial surface green, shiny, glabrous except for tomentose groove of midrib. Inflorescence racemose-umbellate, 12–16-flowered; rachis ca. 5 mm. Pedicel 0.7–1 cm, densely tomentose; calyx lobes 5, ca. 2 mm, triangular, densely tomentose and glandular-hairy outside; corolla funnel-campanulate, deep red, with purple spots, 2.5–3 cm, lobes 5; stamens (9 or)10, unequal, filaments puberulent in lower part; ovary ca. 5 mm, with a few short glandular hairs; style exserted, subequal to corolla, glandular in lower 1/2; stigma capitate, green. Fl. May.

Forests, valleys; 800–2200 m. Chongqing, E Sichuan.


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