Rhododendron hemsleyanum E. H. Wilson

Shrubs or small trees, 2–9 m tall; branchlets stout, ca. 10 mm in diam. below inflorescence, puberulent. Petiole stout, 50–75 mm, sparsely glandular-hairy or glabrous; leaf blade thickly leathery, oblong to oblong-ovate, 9–21 × 4.6–10.5 cm; base auriculate-cordate; margin undulate; apex rounded; abaxial surface pale green, minutely papillate; adaxial surface dark green, somewhat shiny, glabrous; midrib prominent abaxially, grooved adaxially; lateral veins ca. 17-paired, raised abaxially. Inflorescence 7–16-flowered; rachis 55–70 mm, sparsely glandular. Pedicel 3–4 cm, glandular-hairy or glabrous; calyx purple, ca. 1.5 mm, glandular abaxially; corolla open-campanulate, fragrant, white, without flecks, ca. 6 cm, outer surface glandular at base, sometimes puberulent at base within; lobes 7, suborbicular, ca. 2 × 2.4 cm, emarginate; stamens 14–16, unequal, 2.7–4.5 cm, filaments glabrous; ovary conoid, ca. 7 mm, green, densely glandular; style ca. 4.6 cm, glandular; stigma swollen, capitate, ca. 4 mm in diam. Capsule cylindric, 18–38 × 10–15 mm. Fl. May–Jun, fr. Aug–Oct.

SC Sichuan.

Forests; 1200–1500(–2000) m.

Rhododendron hemsleyanum (波叶杜鹃) is a rhododendron species native to Mount Emei in Sichuan, China, where it grows at altitudes of 1200–1500 meters. It is a shrub or small tree that grows to 2–9 meters in height, with leathery leaves that are oblong to oblong-ovate, and 9–21 × 4.6–10.5 cm in size. Flowers are fragrant and white.

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

Rhododendron hemsleyanum là một loài thực vật có hoa trong họ Thạch nam. Loài này được E.H. Wilson miêu tả khoa học đầu tiên năm 1910.

波叶杜鹃（学名：Rhododendron hemsleyanum）为杜鹃花科杜鹃属下的一个种。