Rhododendron thayerianum Rehder & E. H. Wilson

Shrubs, 3–4 m tall; branches stout, thick; bud scales persisting among the leaves for several years, membranous or thinly leathery, ovate or lanceolate, 2–3.5 cm. Petiole cylindric, stout, grooved adaxially, 10–15 mm, sparsely glandular, glabrescent; leaf blade leathery, narrowly oblanceolate, 9–17 × 1.5–2.5 cm; base cuneate; margin revolute; apex acuminate; abaxial surface, except midrib, sparsely glandular and with thinly silvery to fawn indumentum; adaxial surface glabrous; midrib prominent abaxially, deeply grooved adaxially; lateral veins 10–12-paired, impressed. Inflorescence a racemose corymb, 10–20-flowered; rachis 30–40 mm, shortly glandular-hairy. Pedicel slender, 3–5 cm, densely glandular; calyx lobes 5, unequal, ovate, densely glandular, 2–4 mm; corolla funnel-campanulate, white, sometimes deeply flushed pink on the outside along the petal ridges, or pink, without spots, 2–3 cm, lobes 5, orbicular, ca. 1.3 × 1–1.5 cm; stamens 10, unequal, 1.5–2 cm, filaments with base widened and floccose; ovary oblong, ca. 5 mm, 6–8-locular, with translucent whitish glands; style 2–2.5 mm, glandular to tip. Capsule oblong-cylindric, ca. 25 × 6 mm. Fl. May–Jun, fr. Aug–Oct.

W Sichuan.

Woodlands; 2600–3000 m.

Rhododendron thayerianum (反边杜鹃) is a rhododendron species native to western Sichuan in China, where it grows at altitudes of 2,600–3,000 m (8,500–9,800 ft). It is an evergreen shrub that grows to 3–4 m (9.8–13.1 ft) in height, with leathery leaves that are narrowly oblanceolate, and 9–17 × 1.5–2.5 cm in size. The flowers are white, sometimes deeply flushed pink on the outside along the petal ridges, or pink. It flowers quite late in the season, in June and July.

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

Rhododendron thayerianum là một loài thực vật có hoa trong họ Thạch nam. Loài này được Rehder & E.H. Wilson miêu tả khoa học đầu tiên năm 1913.

反边杜鹃（学名：Rhododendron thayerianum）为杜鹃花科杜鹃属下的一个种。