Rhododendron unciferum P. C. Tam

Shrubs; branches cylindric, subverticillate, densely coarsely ferruginous strigose, later subglabrous. Spring and summer leaves possibly dimorphic. Petiole 2–3 mm, ferruginous strigose, hairs flat; leaf blade ovate or elliptic-ovate, usually 1.5–2.5(–3.2) × 1–1.7 cm; base broadly cuneate to subrounded; margin revolute and finely crenate; apex acute; abaxial surface sparsely strigose; adaxial surface glabrous except for midrib. Inflorescence 7–12-flowered. Pedicel 0.2–0.3 cm, densely ferruginous-strigose; calyx lobes broadly oblong or oblong-triangular, small, ca. 2.5 mm, densely coarsely strigose; corolla funnelform, reddish purple, without purple flecks, 1.2–1.3 × ca. 0.8 cm; tube 6–7 × ca. 2 mm, glabrous; lobes long-ovate, glabrous; stamens 5, unequal, 1.3–1.7 cm, filaments glabrous. Fl. Apr–May.

S Guangxi.

Rocks on hill summits; 700–800 m.

Rhododendron unciferum adalah spesies tumbuhan yang tergolong ke dalam famili Ericaceae. Spesies ini juga merupakan bagian dari ordo Ericales. Spesies Rhododendron unciferum sendiri merupakan bagian dari genus Rhododendron.

Rhododendron unciferum là một loài thực vật có hoa trong họ Thạch nam. Loài này được P.C. Tam miêu tả khoa học đầu tiên năm 1982.

垂钩杜鹃（学名：Rhododendron unciferum）为杜鹃花科杜鹃属下的一个种。