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

379. Rhododendron wasonii Hemsley & E. H. Wilson, Bull. Misc. Inform. Kew. 1910: 105. 1910.

褐毛杜鹃 he mao du juan

Shrubs, 1–3 m tall; shoots pubescent and with few short stalked glands when young, later glabrescent. Petiole 5–10 mm, ± pubescent; leaf blade thickly leathery, ovate-lanceolate to ovate or ovate-elliptic, 4–8 × 2–4 cm; base broadly cuneate or subrounded; apex acute and cuspidate; abaxial surface indumentum dense, thickly felted, red-brown to rust-brown or dark brown to golden-brown, sometimes subagglutinated, hairs long-rayed, sometimes intermixed with a few glands; adaxial surface shiny, green, glabrescent. Inflorescence corymbose-racemose, 6–8-flowered; rachis 7–10 mm, sparsely pubescent. Pedicel 1.5–2.5 cm, floccose; calyx lobes 5, ca. 3 mm, broadly triangular, floccose outside; corolla broadly campanulate or funnel-campanulate, yellow or white to pink, rose-tinged on upper lobes and with copious crimson spots, 2.5–4 cm, lobes 5; stamens 10, unequal, filaments densely pubescent in lower half; ovary 4–5 mm, densely brownish or whitish villous; style glabrous or villous at base, stigma capitate, yellow-green. Capsule cylindric, ca. 15 × 4 mm, hairy. Fl. May–Jun, fr. Jul–Sep.

Forests, Rhododendron thickets, mountains; 2300–4000 m. W Sichuan.


1 Leaf blade 5.5–8 × 2.4–4 cm; abaxial surface indumentum thick, red- to rust-brown, glands also sometimes present; corolla broadly campanulate, yellow to white or pink, 3.5–4 cm; style glabrous.   379a var. wasonii
+ Leaf blade 4–7.5 × 2.5–3.5 cm; abaxial surface indumentum thin, dark brown to golden-brown, subagglutinated, glands absent; corolla funnel-campanulate, white to pink, 2.5–3.5 cm; style villous at base.   379b var. wenchuanense

Lower Taxa


 

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