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

291. Rhododendron crinigerum Franchet, J. Bot. (Morot). 12: 260. 1898.

长粗毛杜鹃 chang cu mao du juan

Shrubs 1–6 m tall; bark dark gray; young shoots with sparse short-glandular hairs; bud scales persistent for some years. Petiole 10–20 mm, densely glandular-setose; leaf blade leathery, lanceolate or oblanceolate, 9–20 × 1.5–3(–6) cm; base obtuse; margin revolute; apex acuminate; abaxial surface usually densely fawn to red-brown tomentose, interspersed with glandular hairs, midrib densely glandular and tomentose; adaxial surface glabrous when mature, rugose, midrib sparsely glandular and hairy; midrib prominent abaxially, grooved adaxially; lateral veins 15–19-paired. Inflorescence 7–16-flowered; rachis 10–15 mm, pubescent. Pedicel 2–3 cm, densely glandular-setose and sparsely tomentose; calyx cup-shaped; lobes 5, 5–10 mm, irregular, densely glandular-setose; corolla campanulate, white to pink, with purple flecks and basal blotch, 3–3.5 cm, lobes 5, rounded, ca. 1.5 cm, emarginate; stamens 10, unequal, 1.5–3 cm, filaments pubescent at base; ovary ovoid, ca. 4 mm, glandular-hairy; style glandular at base. Capsule cylindric, 15–20 × ca. 7 mm, glandular, calyx persistent. Fl. May–Jun, fr. Aug–Sep.

Forests, valleys, rocky slopes, cliffs; 2200–4200 m. NW Sichuan, SE Xizang, NW Yunnan.


1 Abaxial leaf surface sparsely glandular, with a dense matted indumentum.   291a var. crinigerum
+ Abaxial leaf surface densely glandular, with a thinner indumentum.   291b var. euadenium

Lower Taxa


 

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