喇叭杜鹃Rhododendron discolor Franch.
喇叭杜鹃Rhododendron discolor Franch.
25．喇叭杜鹃（中国高等植物图鉴）图版9：6-9
Rhododendron discolor Franch. in Journ. Bot. 9: 391. 1895; Rehd. et Wils. in Sargent, Pl. Wils, 1: 542. 1913; Tagg. in Stevenson, Spec. Rhodod. 271. 1930;中国高等植物图鉴3: 104, 图4161. 1974.——R. fortunei Lindl. var. houlstonii Rehd. et Wils. in idib. 1: 541. 1913. ——R. mandarinorum Diels in Bot. Jahrb. 29: 510. 1900. ——R. houlstonii Hemsl. et Wils. in Kew Bull. Misc. Inform. 1910: 110. 1910.——R. kirkii Millais, Rhodod. ed. 1: 169. 1917 "non illegit."——R. kwang fuense Chun et Fang in Act. Phytotax. Sin. 6: 170, t. 41. 1957.——R. fortunei Lindl. subsp. discolor (Franch. ) Chamb. ex Cullen et Chamb. in Not. Bot. Gard. Edinb. 37: 330. 1979; Chamb. in Not. Bot. Gard. Edinb. 39: 234. 1982; 云南植物志4: 366. 1986.
常绿灌木或小乔木，高1.5-8米；树皮褐色；枝粗壮，无毛。腋芽卵形，黄褐色，无毛，长4-6毫米。叶革质，长圆状椭圆形至长圆状披针形，长9.5-18厘米，宽2.4-5.4厘米或更宽，先端钝，基部楔形，稀略近心形，边缘反卷，上面深绿色，下面淡黄白色，无毛，中脉在上面凹下，下面凸起，侧脉约21对，在上面稍凹入，下面不显明；叶柄粗壮，长1.5-2.5厘米，无毛。顶生短总状花序，有花6-8（-10）朵；总轴长1.5-3厘米，多少散生腺体；花梗长2-2.5厘米，无毛或略有腺体；花萼小，长2-5毫米，裂片7，波状三角形或卵形，有稀疏的腺体，边缘有纤毛及短柄腺体；花冠漏斗状钟形，长5.5厘米，宽约6厘米，淡红色至白色，内面无毛，裂片7，近于圆形，长2厘米，宽2.5厘米，顶端有缺刻；雄蕊14-16，不等长，长3-3.8厘米，花丝白色，无毛，花药长圆形，白色，长3.2-3.8毫米；子房卵状圆锥形，长7毫米，直径4.8毫米，密被淡黄白色短柄腺体，花柱细圆柱形，通体被淡黄白色短柄腺体，柱头小，头状，宽约3毫米。蒴果长圆柱形，微弯曲，长4-5厘米，直径约1.5厘米，9-10室，有肋纹及腺体残迹。花期6-7月，果期9-10月。
产陕西、安徽、浙江、江西、湖北、湖南、广西、四川、贵州和云南东北部。生于海拔900-1 900米的林下或密林中。模式标本采自四川城口。
本种与云锦杜鹃 R. fortunei Lindl.相近，但本种叶片基部常为楔形，花期较迟，花萼裂片边缘有纤毛，易于区别。
《Flora of China》 Vol. 14 (2005)
Rhododendron discolor Franchet
喇叭杜鹃 la ba du juan
Shrubs or small trees, 1.5–8 m tall; branchlets stout, glabrous. Petiole stout, 15–25 mm, glabrous; leaf blade leathery, oblong-elliptic or oblong-lanceolate, 9.5–18 × 2.4–5.4 cm, or broader; base cuneate, rarely cordate; apex obtuse; both surfaces glabrous; abaxial surface pale yellowish green; adaxial surface dark green; midrib raised abaxially, grooved adaxially; lateral veins ca. 21-paired, obscure abaxially, impressed adaxially. Inflorescence 6–8(–10)-flowered; rachis 15–30 mm, glandular. Pedicel 2–2.5 cm, glabrous or sparsely glandular; calyx lobes 7, 2–5 mm, ovate, glandular, margin gland-fringed; corolla funnel-campanulate, pale pink to white, ca. 5.5 cm, lobes 7, suborbicular, ca. 2 × 2.5 cm, emarginate; stamens 14–16, unequal, 3–3.8 cm, filaments glabrous; ovary conoid, ca. 7 mm, densely glandular-hairy; style glandular to tip. Capsule cylindric, 40–50 × ca. 15 mm. Fl. Jun–Jul, fr. Sep–Oct.
Forests; 900–1900 m. Anhui, Chongqing, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Shaanxi, Sichuan, Yunnan, Zhejiang.
Rhododendron discolor intergrades with R. fortunei, and can reliably be separated from that species only by the proportionately narrower leaves.
别名：广福杜鹃;映山红;异色杜鹃花;
科名：杜鹃花科 Ericaceae
属名：杜鹃属 Rhododendron
25．喇叭杜鹃（中国高等植物图鉴）图版9：6-9
Rhododendron discolor Franch. in Journ. Bot. 9: 391. 1895; Rehd. et Wils. in Sargent, Pl. Wils, 1: 542. 1913; Tagg. in Stevenson, Spec. Rhodod. 271. 1930;中国高等植物图鉴3: 104, 图4161. 1974.——R. fortunei Lindl. var. houlstonii Rehd. et Wils. in idib. 1: 541. 1913. ——R. mandarinorum Diels in Bot. Jahrb. 29: 510. 1900. ——R. houlstonii Hemsl. et Wils. in Kew Bull. Misc. Inform. 1910: 110. 1910.——R. kirkii Millais, Rhodod. ed. 1: 169. 1917 "non illegit."——R. kwang fuense Chun et Fang in Act. Phytotax. Sin. 6: 170, t. 41. 1957.——R. fortunei Lindl. subsp. discolor (Franch. ) Chamb. ex Cullen et Chamb. in Not. Bot. Gard. Edinb. 37: 330. 1979; Chamb. in Not. Bot. Gard. Edinb. 39: 234. 1982; 云南植物志4: 366. 1986.
常绿灌木或小乔木，高1.5-8米；树皮褐色；枝粗壮，无毛。腋芽卵形，黄褐色，无毛，长4-6毫米。叶革质，长圆状椭圆形至长圆状披针形，长9.5-18厘米，宽2.4-5.4厘米或更宽，先端钝，基部楔形，稀略近心形，边缘反卷，上面深绿色，下面淡黄白色，无毛，中脉在上面凹下，下面凸起，侧脉约21对，在上面稍凹入，下面不显明；叶柄粗壮，长1.5-2.5厘米，无毛。顶生短总状花序，有花6-8（-10）朵；总轴长1.5-3厘米，多少散生腺体；花梗长2-2.5厘米，无毛或略有腺体；花萼小，长2-5毫米，裂片7，波状三角形或卵形，有稀疏的腺体，边缘有纤毛及短柄腺体；花冠漏斗状钟形，长5.5厘米，宽约6厘米，淡红色至白色，内面无毛，裂片7，近于圆形，长2厘米，宽2.5厘米，顶端有缺刻；雄蕊14-16，不等长，长3-3.8厘米，花丝白色，无毛，花药长圆形，白色，长3.2-3.8毫米；子房卵状圆锥形，长7毫米，直径4.8毫米，密被淡黄白色短柄腺体，花柱细圆柱形，通体被淡黄白色短柄腺体，柱头小，头状，宽约3毫米。蒴果长圆柱形，微弯曲，长4-5厘米，直径约1.5厘米，9-10室，有肋纹及腺体残迹。花期6-7月，果期9-10月。
产陕西、安徽、浙江、江西、湖北、湖南、广西、四川、贵州和云南东北部。生于海拔900-1 900米的林下或密林中。模式标本采自四川城口。
本种与云锦杜鹃 R. fortunei Lindl.相近，但本种叶片基部常为楔形，花期较迟，花萼裂片边缘有纤毛，易于区别。
《Flora of China》 Vol. 14 (2005)
Rhododendron discolor Franchet
喇叭杜鹃 la ba du juan
Shrubs or small trees, 1.5–8 m tall; branchlets stout, glabrous. Petiole stout, 15–25 mm, glabrous; leaf blade leathery, oblong-elliptic or oblong-lanceolate, 9.5–18 × 2.4–5.4 cm, or broader; base cuneate, rarely cordate; apex obtuse; both surfaces glabrous; abaxial surface pale yellowish green; adaxial surface dark green; midrib raised abaxially, grooved adaxially; lateral veins ca. 21-paired, obscure abaxially, impressed adaxially. Inflorescence 6–8(–10)-flowered; rachis 15–30 mm, glandular. Pedicel 2–2.5 cm, glabrous or sparsely glandular; calyx lobes 7, 2–5 mm, ovate, glandular, margin gland-fringed; corolla funnel-campanulate, pale pink to white, ca. 5.5 cm, lobes 7, suborbicular, ca. 2 × 2.5 cm, emarginate; stamens 14–16, unequal, 3–3.8 cm, filaments glabrous; ovary conoid, ca. 7 mm, densely glandular-hairy; style glandular to tip. Capsule cylindric, 40–50 × ca. 15 mm. Fl. Jun–Jul, fr. Sep–Oct.
Forests; 900–1900 m. Anhui, Chongqing, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Shaanxi, Sichuan, Yunnan, Zhejiang.
Rhododendron discolor intergrades with R. fortunei, and can reliably be separated from that species only by the proportionately narrower leaves.