栏目

丽江蔷薇Rosa lichiangensis Yü et Ku

丽江蔷薇Rosa lichiangensis Yü et Ku

别名:

科名:蔷薇科 Rosaceae

属名:蔷薇属 Rosa

《中国植物志》第37卷432页
  61.丽江蔷薇
  Rosa lichiangensis Yu et Ku in Bull. Bot. Res. 1 (4): 14. 1981.
  攀援小灌木,高约2米;小枝圆柱形,细弱,散生短粗、稍弯曲的皮刺。小叶3-5,连叶柄长3-5厘米;小叶片椭圆形或倒卵形,长1-2.3厘米,宽5-13毫米;先端急尖或圆钝,基部楔形或宽楔形,稀近圆形,边缘有尖锐单锯齿,幼时齿尖常带腺体,上面无毛,下面有稀疏柔毛或近无毛,叶脉突起;小叶柄和叶轴有柔毛和散生小皮刺;托叶大部贴生于叶柄,离生部分披针形,先端长渐尖,下面有柔毛,全缘,边缘常有稀疏腺毛。花2-4朵排成伞形伞房状;花梗长1-1.5厘米,无毛或有少数腺毛;花直径2.5-3厘米,萼筒和萼片外面无毛或有少数腺毛,萼片卵状披针形,先端长渐尖,常有1-2对带形小裂片,边缘有腺毛;内面密被柔毛;花瓣粉红色,倒卵形,先端微凹,基部宽楔形;雄蕊多数;花柱结合成柱,密被柔毛,外伸,约与雄蕊等长。果未见。
  产云南(丽江)。多生灌木丛中。
  本种近似野蔷薇R. multiflora Thunb., 惟后者托叶分裂呈篦齿状,花柱无毛,是其特异之点。
  又本种与广东蔷薇R. kwangtungensis Yu et Tsai极为近似,但后者花为白色,直径1.5-2厘米,成伞房花序,花梗和萼筒密被柔毛和腺毛,小叶上面沿中脉有柔毛;而本种花为粉红色,直径2.5-3厘米,成伞形伞房状花序,花梗和萼筒均光滑无毛或有少数腺毛,小叶上面无毛,易于识别。
形态特征:攀援小灌木,高约2米;小枝圆柱形,细弱,散生短粗、稍弯曲的皮刺。小叶3—5,连 叶柄长3-5厘米;小叶片椭圆形或倒卵形,长1--2.3厘米,宽5一13毫米;先端急尖或圆 钝,基部楔形或宽楔形,稀近圆形,边缘有尖锐单锯齿,幼时齿尖常带腺体,上面无毛,下面 有稀疏柔毛或近无毛,叶脉突起;小叶柄和叶轴有柔毛和散生小皮刺;托叶大部贴生于叶 柄,离生部分披针形,先端长渐尖,下面有柔毛,全缘,边缘常有稀疏腺毛。花2一4朵排成 伞形伞房状;花梗长1一1.5厘米,无毛或有少数腺毛;花直径2.5—3厘米,萼筒和萼片外 面无毛或有少数腺毛,萼片卵状披针形,先端长渐尖,常有1—2对带形小裂片,边缘有腺 毛;内面密被柔毛;花瓣粉红色,倒卵形,先端微凹,基部宽楔形;雄蕊多数;花柱结合成柱, 密被柔毛,外伸,约与雄蕊等长。果未见。
产地分布:产云南(丽江)。多生灌木丛中。
本种提示:本种近似野蔷薇R.multiflora Thunb.,惟后者托叶分裂呈篦齿状,花柱无毛;是其特异之点。 又本种与广东蔷薇R.Kwangtungensis Yu et Tsai极为近似,但后者花为白色,直径1.5—2厘米,成伞房花序,花梗和萼筒密被柔毛和腺毛,小叶上面沿中脉有柔毛;而本种花为粉红色;直径2.5--3厘米,成伞形伞房状花序,花梗和萼筒均光滑无毛或有少数腺毛,小叶上面无毛,易于识别。
参考文献:Rosa lichiangensis Yu et Ku in Bull.Bot.Res.1(4):14.1981.

《Flora of China》 Vol. 9 (2003)
Rosa lichiangensis  T. T. Yu & T. C. Ku
丽江蔷薇   li jiang qiang wei
Shrubs climbing, ca. 2 m tall. Branchlets terete, slender; prickles scattered, slightly curved, short, stout. Leaves including petiole 3–5 cm; stipules mostly adnate to petiole, free parts lanceolate, abaxially pubescent, margin entire, often sparsely glandular-pubescent, apex long acuminate; rachis and petiole pubescent and sparsely shortly prickly; leaflets 3–5(–7), elliptic or obovate, 1–2.3 × 0.5–1.3 cm, abaxially glabrous, adaxially sparsely pubescent or glabrous, base cuneate or broadly cuneate, rarely subrounded, margin simply serrate, teeth often glandular apically when young, apex acute or rounded-obtuse. Flowers 2–4 in umbel-like corymb, 2.5–3 cm in diam.; pedicel 1–1.5 cm, glabrous or sparsely glandular-pubescent; bracts unknown. Hypanthium obovate-oblong, abaxially glabrous or sparsely glandular-pubescent. Sepals 5, ovate-lanceolate, abaxially glabrous or sparsely glandular-pubescent, adaxially densely pubescent, margin glandular-pubescent, often with 2–4 linear lobes, apex long acuminate. Petals 5, pink, obovate, base broadly cuneate, apex emarginate. Styles connate in column, exserted, nearly equaling stamens, densely pubescent. Hip unknown.
Scrub. NW Yunnan (Lijiang Naxizu Zizhixian).
One of us (Robertson) has seen no specimens of this species.

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