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

359. Rhododendron potaninii Batalin, Trudy Imp. S.-Peterburgsk. Bot. Sada. 11: 489. 1891 [“potanini”].

甘肃杜鹃 gan su du juan

Small shrubs, erect, branchlets glabrous. Petiole 20–25 mm, densely tomentose, hairs branched; leaf blade leathery, oblong to obovate, 7–9 × 2.5–4 cm; base rounded; apex obtuse, mucronate; abaxial surface pale, only lower half of midrib densely fine branched-hairy; adaxial surface glabrous. Inflorescence racemose or subumbellate, 7–8-flowered. Pedicel ca. 2 cm, densely rufous-pubescent; calyx lobes 5, ca. 1 mm, irregular, ± hairy; corolla broadly campanulate, white, unspotted, ca. 3 cm, glabrous; lobes 5, ca. 1 cm, rounded; stamens 10, included in the tube, reaching only to base of lobes, filaments sparsely puberulent in lower half; ovary conical, ca. 4 mm, densely rufous-tomentose; style glabrous.

E Gansu.


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