细瘦杜鹃Rhododendron tenue Ching ex Fang et M. Y. He
细瘦杜鹃Rhododendron tenue Ching ex Fang et M. Y. He
348.细瘦杜鹃(植物研究)
Rhododendron tenue Ching ex Fang et M. Y. He in Bull. Bot. Res. 2(2): 87. f. 5. 1982 et in Journ. Rhodod. Spec. Founcdation 1: 106, 1984.
灌木;小枝细瘦,直径1-1.5毫米;幼枝密被棕褐色糙伏毛,后近无毛。叶密集枝端,薄纸质,椭圆状长卵形,长2-5.5(-10)厘米,宽0.8-1.9厘米,极稀达4.8厘米,先端锐尖,基部宽楔形或近于圆形,边缘具不明显的钝圆齿,上面深绿色,幼时散生棕褐色糙伏毛,下面淡绿色,除中脉疏被深棕色扁平糙伏毛外,其余散生糙伏毛,中脉在上面下凹,下面显著凸起,侧脉3-6对,仅在下面明显,未达叶缘连结;叶柄长2-5毫米,稀达1厘米,被棕褐色糙伏毛。伞形花序顶生,常有花2-3朵;花梗长4-5毫米,密被棕色扁平糙伏毛;花萼极不发达;花冠漏斗形,连同管长8毫米,花冠管长5毫米,内面被微柔毛;雄蕊5,不等长,3枚较长的达1.2厘米,2枚短的微比花冠长,花丝基部扁平,被短柔毛;子房卵球形,被糙伏毛,花柱与部分雄蕊等长,长1.2厘米,中部以下被亮棕褐色糙伏毛,柱头5浅裂。蒴果圆锥形,长5-6毫米,直径4毫米,密被棕褐色糙伏毛;果梗长0.8-1.3厘米,被糙伏毛。花期5-6月,果期7-11月。
产广西东北部。生于海拔约1 500米的山坡密林中。模式标本采自广西兴安(九区雷公田至塘同)。
形态特征:灌木;小枝细瘦,直径1—1.5毫米;幼枝密被棕褐色糙伏毛,后近无毛。叶密集枝 端,薄纸质,椭圆状长卵形,长2—5.5(--10)厘米,宽0.8—1.9厘米,极稀达4.8厘 米,先端锐尖,基部宽楔形或近于圆形,边缘具不明显的钝圆齿,上面深绿色,幼时散生 棕褐色糙伏毛,下面淡绿色,除中脉疏被深棕色扁平糙伏毛外,其余散生糙伏毛, 十脉在 上面下凹, 下面显著凸起,侧脉3—6对,仅在下面明显,未达叶缘连结;叶柄长2—5毫 米,稀达1厘米,被棕褐色糙伏毛。伞形花序顶生,常有花2—3朵;花梗长4--5毫米, 密被棕色扁干糙伏毛;花萼极不发达;花冠漏斗形,连同管长8毫米, 花冠管长5毫米, 内面被微柔毛;雄蕊5,不等长,3枚较长的达1.2厘米,1枚短的微比花冠长,花丝基部 扁下,被短柔毛;子房卵球形,被糙伏毛,花柱与部分雄蕊等长,长1.2厘米,中部以下 被亮棕褐色糙伏毛,柱头5浅裂。蒴果圆锥形,长5—6毫米,直径4毫米,密被棕褐色 糙伏毛;果梗长0.8—1.3厘米,被糙伏毛。 花期5—6月,果期7—11月。
产地分布:产广西东北部,生于海拔约1 500米的山坡密林中。模式标本采自广西兴安(九区雷公田至塘同)。
参考文献:Rhododendron tenue Ching ex Fang et M.Y.He in Bull. Bot. Res. 2(2): 87.F.5.1982 et in Journ.Rhodod.Spec.Foundation 1;106.1984.
《Flora of China》 Vol. 14 (2005)
Rhododendron tenue Ching ex W. P. Fang & M. Y. He
细瘦杜鹃 xi shou du juan
Shrubs, branchlets slender, densely coarsely strigose. Petiole 2–5(–10) mm; leaf blade thin, papery, elliptic to long-ovate, 2–5.5(–10) × 0.9–1.9(–4.8) cm; base broadly cuneate or subrounded; margin obscurely crenate; both surfaces sparsely coarsely strigose; lateral veins only conspicuous on abaxial surface, not reaching margin. Inflorescence usually 2- or 3-flowered. Pedicel 0.4–0.5 cm, densely brown strigose, hairs flat; calyx obsolete; corolla funnelform, ca. 0.8 cm; tube ca. 5 mm, inner surface puberulent; stamens 5, unequal, 3 longer up to 1.2 cm, 2 shorter slightly longer than corolla, filaments flat, pubescent; ovary ovoid, coarsely strigose; style ca. 1.2 cm, as long as some of stamens, coarsely shiny brown-strigose in the lower half. Capsule conical, 5–6 × ca. 4 mm, densely coarsely strigose. Fl. May–Jun, fr. Jul–Nov.
Dense forests, mountain slopes; ca. 1500 m. NE Guangxi.
The original description was based on a type that originally possessed floral parts, which, however, no longer exist on the specimen.
别名:
科名:杜鹃花科 Ericaceae
属名:杜鹃属 Rhododendron
《中国植物志》第57(2)卷435页
348.细瘦杜鹃(植物研究)
Rhododendron tenue Ching ex Fang et M. Y. He in Bull. Bot. Res. 2(2): 87. f. 5. 1982 et in Journ. Rhodod. Spec. Founcdation 1: 106, 1984.
灌木;小枝细瘦,直径1-1.5毫米;幼枝密被棕褐色糙伏毛,后近无毛。叶密集枝端,薄纸质,椭圆状长卵形,长2-5.5(-10)厘米,宽0.8-1.9厘米,极稀达4.8厘米,先端锐尖,基部宽楔形或近于圆形,边缘具不明显的钝圆齿,上面深绿色,幼时散生棕褐色糙伏毛,下面淡绿色,除中脉疏被深棕色扁平糙伏毛外,其余散生糙伏毛,中脉在上面下凹,下面显著凸起,侧脉3-6对,仅在下面明显,未达叶缘连结;叶柄长2-5毫米,稀达1厘米,被棕褐色糙伏毛。伞形花序顶生,常有花2-3朵;花梗长4-5毫米,密被棕色扁平糙伏毛;花萼极不发达;花冠漏斗形,连同管长8毫米,花冠管长5毫米,内面被微柔毛;雄蕊5,不等长,3枚较长的达1.2厘米,2枚短的微比花冠长,花丝基部扁平,被短柔毛;子房卵球形,被糙伏毛,花柱与部分雄蕊等长,长1.2厘米,中部以下被亮棕褐色糙伏毛,柱头5浅裂。蒴果圆锥形,长5-6毫米,直径4毫米,密被棕褐色糙伏毛;果梗长0.8-1.3厘米,被糙伏毛。花期5-6月,果期7-11月。
产广西东北部。生于海拔约1 500米的山坡密林中。模式标本采自广西兴安(九区雷公田至塘同)。
形态特征:灌木;小枝细瘦,直径1—1.5毫米;幼枝密被棕褐色糙伏毛,后近无毛。叶密集枝 端,薄纸质,椭圆状长卵形,长2—5.5(--10)厘米,宽0.8—1.9厘米,极稀达4.8厘 米,先端锐尖,基部宽楔形或近于圆形,边缘具不明显的钝圆齿,上面深绿色,幼时散生 棕褐色糙伏毛,下面淡绿色,除中脉疏被深棕色扁平糙伏毛外,其余散生糙伏毛, 十脉在 上面下凹, 下面显著凸起,侧脉3—6对,仅在下面明显,未达叶缘连结;叶柄长2—5毫 米,稀达1厘米,被棕褐色糙伏毛。伞形花序顶生,常有花2—3朵;花梗长4--5毫米, 密被棕色扁干糙伏毛;花萼极不发达;花冠漏斗形,连同管长8毫米, 花冠管长5毫米, 内面被微柔毛;雄蕊5,不等长,3枚较长的达1.2厘米,1枚短的微比花冠长,花丝基部 扁下,被短柔毛;子房卵球形,被糙伏毛,花柱与部分雄蕊等长,长1.2厘米,中部以下 被亮棕褐色糙伏毛,柱头5浅裂。蒴果圆锥形,长5—6毫米,直径4毫米,密被棕褐色 糙伏毛;果梗长0.8—1.3厘米,被糙伏毛。 花期5—6月,果期7—11月。
产地分布:产广西东北部,生于海拔约1 500米的山坡密林中。模式标本采自广西兴安(九区雷公田至塘同)。
参考文献:Rhododendron tenue Ching ex Fang et M.Y.He in Bull. Bot. Res. 2(2): 87.F.5.1982 et in Journ.Rhodod.Spec.Foundation 1;106.1984.
《Flora of China》 Vol. 14 (2005)
Rhododendron tenue Ching ex W. P. Fang & M. Y. He
细瘦杜鹃 xi shou du juan
Shrubs, branchlets slender, densely coarsely strigose. Petiole 2–5(–10) mm; leaf blade thin, papery, elliptic to long-ovate, 2–5.5(–10) × 0.9–1.9(–4.8) cm; base broadly cuneate or subrounded; margin obscurely crenate; both surfaces sparsely coarsely strigose; lateral veins only conspicuous on abaxial surface, not reaching margin. Inflorescence usually 2- or 3-flowered. Pedicel 0.4–0.5 cm, densely brown strigose, hairs flat; calyx obsolete; corolla funnelform, ca. 0.8 cm; tube ca. 5 mm, inner surface puberulent; stamens 5, unequal, 3 longer up to 1.2 cm, 2 shorter slightly longer than corolla, filaments flat, pubescent; ovary ovoid, coarsely strigose; style ca. 1.2 cm, as long as some of stamens, coarsely shiny brown-strigose in the lower half. Capsule conical, 5–6 × ca. 4 mm, densely coarsely strigose. Fl. May–Jun, fr. Jul–Nov.
Dense forests, mountain slopes; ca. 1500 m. NE Guangxi.
The original description was based on a type that originally possessed floral parts, which, however, no longer exist on the specimen.