Rhododendron basilicum I. B. Balf. & W. W. Sm.

Shrubs or small trees, 3–10 m tall; branchlets stout, usually 8–15 mm in diam., grayish or whitish tomentose, glabrescent. Petiole flattened, winged, 15–35 mm, glabrescent; leaf blade leathery, broadly obovate to oblanceolate, broadest above middle, 10–32 × 5–17 cm; base cuneate; apex rounded, apiculate; abaxial surface with 2-layered indumentum, upper thick, grayish or rufous, hairs broadly cup-shaped, hardly fimbriate, lower layer compacted and thin; adaxial surface green, glabrous, midrib prominent abaxially, plane or impressed adaxially; lateral veins 12–15-paired, prominent abaxially. Inflorescence 15–25-flowered, rachis stout, 35–55 mm, sparsely tomentose. Pedicel 2.5–5 cm, brownish tomentose; calyx teeth 7 or 8, small, tomentose; corolla obliquely campanulate, pale yellow, with crimson basal blotch, 3.5–4.5 cm, lobes 8, suborbicular, ca. 1 × 1.2 cm, emarginate. Stamens 16, 1.5–2.5 cm; filaments glabrous; ovary ovoid, 8–10 mm, brown tomentose; style 2.5–3.5 cm, glabrous, stigma a swollen disk. Capsule cylindric, 25–40 × 8–10 mm, densely rufous-tomentose. Fl. May–Jun, fr. Oct–Nov.

W Yunnan [NE Myanmar].

Mixed or Abies forests; 2400–3700 m.

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

Rhododendron basilicum là một loài thực vật có hoa trong họ Thạch nam. Loài này được Balf. f. & W.W. Sm. miêu tả khoa học đầu tiên năm 1916.

粗枝杜鹃（学名：Rhododendron basilicum），为杜鹃花科杜鹃属下的一个植物种。