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

287. Rhododendron habrotrichum I. B. Balfour & W. W. Smith, Notes Roy. Bot. Gard. Edinburgh. 9: 232. 1916.

粗毛杜鹃 cu mao du juan

Shrubs, 1.2–3.5 m tall; older branches grayish brown, glabrous, 4–5 mm in diam. below inflorescence; young shoots glandular-setose. Petiole stout, 10–20 mm, densely brown-glandular-setose; leaf blade subleathery, oblong-elliptic to obovate, 9–12 × 4.5–6.5 cm; base rounded or slightly cordate; margin ciliate-setulose; apex acute; abaxial surface pale green, glabrous except for glandular-setose midrib and veins; adaxial surface smooth, green, glabrous; midrib raised abaxially, grooved adaxially; lateral veins 15–16-paired, impressed adaxially. Inflorescence 10-flowered; rachis ca. 10 mm. Pedicel stout, ca. 2 cm, densely glandular-setose; calyx red; lobes 5, ca. 15 mm, rounded, with similar hairs, ciliate; corolla campanulate, white flushed rose to pink, with or without purple flecks and basal blotch, ca. 5 cm, lobes 5, ca. 1.5 × 2.5 cm, emarginate; stamens 10, unequal, 2.5–3.5 cm, filaments pubescent at base; ovary cylindric, ca. 5 mm, densely glandular-setose; style ca. 3.5 cm, glandular-setose at base. Capsule cylindric, ca. 20 × 6 mm, setose, calyx persistent. Fl. Jun–Jul, fr. Aug–Oct.

Rhododendron thickets, rocky slopes; 2700–3400 m. W Yunnan [NE Myanmar].


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