长蕊杜鹃(原变种) chang rui du juan (yuan bian zhong)

Rhododendron aucubifolium Hemsley; R. cavaleriei H. Léveillé var. chaffanjonii H. Léveillé; R. esquirolii H. Léveillé; R. pittosporifolium Hemsley.

Petiole 8–12 mm, glabrous; leaf blade 6.5–8(–10) × 2–3.5 cm; base cuneate; abaxial surface entirely glabrous. Pedicel and ovary glabrous. Fl. Apr–May, fr. Jul–Oct.

Open forests, thickets; 500–1500 m. Anhui, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Shanxi, Sichuan, Yunnan, Zhejiang.