山光杜鹃Rhododendron oreodoxa Franch.
山光杜鹃Rhododendron oreodoxa Franch.
14．山光杜鹃（中国高等植物图鉴）
Rhododendron oreodoxa Franch. in Bull. Soc. Bot. France 33:230. 1886 et in Nouv. Arch. Mus. Paris, 10: 46. 1888; Rehd. et Wils. in Sargent, Pl. Wils. 1: 540. 1913; Tagg. in Stevenson, Spec. Rhodod. 285. 1930;中国高等植物图鉴3: 106, 图4165. 1974; Cullen et Chamb. in Not. Bot. Gard. Edinb. 37: 331. 1979; Chamb. in Not. Bot. Gard. Edinb. 39:238. 1982; 峨眉山杜鹃花45, 图14. 1986;中国四川杜鹃花29-31. 1986.——R. haematocheilum Craib. in Gard. Chron. 53: 214. 1913.——R. reginaldii Balf. f. in Not. Bot. Edinb. 11: 114. 1914.——R. imprichtii Diels in Fedde, Repert. Sp. Nov. 17: 195. 1921.
《Flora of China》 Vol. 14 (2005)
Rhododendron oreodoxa Franchet
山光杜鹃 shan guang du juan
Shrubs or small trees, 1–8(–12) m tall; shoots ca. 4 mm in diam. below inflorescence; young shoots gray-tomentose, glabrescent. Petiole 10–25 mm, glandular when young; leaf blade leathery, elliptic or obovate-elliptic, 4.5–10 × 2–3.5 cm; base rounded; apex obtuse or rounded, apiculate; both surfaces glabrous; abaxial surface pale green; adaxial surface dark green; midrib grooved adaxially; lateral veins 13–15-paired. Inflorescence 6–8(–12)-flowered; rachis ca. 5 mm, glandular and tomentose. Pedicel purple, 0.5–1.5 cm, sparsely glandular-hairy or sparsely wispy brown-tomentose; calyx lobes 6 or 7, 1–3 mm, glandular outside; corolla campanulate, pale pink, 3.5–4.5 cm, lobes 5–8, orbicular, ca. 1 cm; stamens 12–14, filaments glabrous or pubescent; ovary conoid, 5–8 mm, glabrous or glandular-hairy; style 2.8–3.4 cm, glabrous or densely glandular-hairy, stigma small. Capsule cylindric, slightly curved, 18–32 mm. Fl. Apr–Jun, fr. Aug–Oct.
Forests, thickets; 1800–3900 m. S Gansu, W Hubei, S Shaanxi, Sichuan, E Xizang.
别名：野枇杷;枇杷;光背杜鹃;山景杜鹃;
科名：杜鹃花科 Ericaceae
属名：杜鹃属 Rhododendron
14．山光杜鹃（中国高等植物图鉴）
Rhododendron oreodoxa Franch. in Bull. Soc. Bot. France 33:230. 1886 et in Nouv. Arch. Mus. Paris, 10: 46. 1888; Rehd. et Wils. in Sargent, Pl. Wils. 1: 540. 1913; Tagg. in Stevenson, Spec. Rhodod. 285. 1930;中国高等植物图鉴3: 106, 图4165. 1974; Cullen et Chamb. in Not. Bot. Gard. Edinb. 37: 331. 1979; Chamb. in Not. Bot. Gard. Edinb. 39:238. 1982; 峨眉山杜鹃花45, 图14. 1986;中国四川杜鹃花29-31. 1986.——R. haematocheilum Craib. in Gard. Chron. 53: 214. 1913.——R. reginaldii Balf. f. in Not. Bot. Edinb. 11: 114. 1914.——R. imprichtii Diels in Fedde, Repert. Sp. Nov. 17: 195. 1921.
《Flora of China》 Vol. 14 (2005)
Rhododendron oreodoxa Franchet
山光杜鹃 shan guang du juan
Shrubs or small trees, 1–8(–12) m tall; shoots ca. 4 mm in diam. below inflorescence; young shoots gray-tomentose, glabrescent. Petiole 10–25 mm, glandular when young; leaf blade leathery, elliptic or obovate-elliptic, 4.5–10 × 2–3.5 cm; base rounded; apex obtuse or rounded, apiculate; both surfaces glabrous; abaxial surface pale green; adaxial surface dark green; midrib grooved adaxially; lateral veins 13–15-paired. Inflorescence 6–8(–12)-flowered; rachis ca. 5 mm, glandular and tomentose. Pedicel purple, 0.5–1.5 cm, sparsely glandular-hairy or sparsely wispy brown-tomentose; calyx lobes 6 or 7, 1–3 mm, glandular outside; corolla campanulate, pale pink, 3.5–4.5 cm, lobes 5–8, orbicular, ca. 1 cm; stamens 12–14, filaments glabrous or pubescent; ovary conoid, 5–8 mm, glabrous or glandular-hairy; style 2.8–3.4 cm, glabrous or densely glandular-hairy, stigma small. Capsule cylindric, slightly curved, 18–32 mm. Fl. Apr–Jun, fr. Aug–Oct.
Forests, thickets; 1800–3900 m. S Gansu, W Hubei, S Shaanxi, Sichuan, E Xizang.