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丽水悬钩子Rubus lishuiensis Yü et Lu

丽水悬钩子Rubus lishuiensis Yü et Lu

别名:

科名:蔷薇科 Rosaceae

属名:悬钩子属 Rubus

《中国植物志》第37卷044页
  3.丽水悬钩子 图版2: 3
  Rubus lishuiensis Yu et Lu, 植物分类学报20(3): 295. 1982.
  藤状灌木,攀援;小枝圆柱形,幼时具细柔毛,逐渐脱落,具稀疏基部宽大的皮刺。小叶常5-7枚,卵状披针形或长卵形,长5-7厘米,宽2-3.5厘米,顶端渐尖,基部宽楔形至圆形,上面无毛或沿叶脉疏生柔毛,下面密被灰色绒毛,沿中脉有极稀疏小刺,边缘有不整齐粗锐锯齿或缺刻状重锯齿;叶柄长5-7厘米,顶生小叶柄长1.5-2厘米,侧生小叶近无柄,与叶轴幼时均被细柔毛,老时脱落,疏生钩刺;托叶线状披针形,具柔毛。花成短总状花序;总花梗和花柄均被细柔毛;苞片披针形或线状披针形,有细柔毛;花萼外面密被细柔毛;萼片卵形,长4-6毫米,宽3-4毫米,顶端急尖并具突尖头,在果期直立;花丝线形;雌蕊多数。果实近球形,直径约1厘米,红色,无毛;核卵球形,有明显小孔穴。果期8-9月。
  产浙江(丽水县云峰)。
  本种和宽萼白叶R. innominatus S. Moore var. macrosepalus Metc.很相近,区别在于后者常为3小叶;总花梗、花梗和花萼外面均密被黄灰色或黄色绒毛状长柔毛;花萼较宽大;萼片宽卵形,长8-12毫米,宽5-7毫米。
形态特征:藤状灌木,攀援 、小枝圆柱形,幼时具细柔毛,逐渐脱熔,具稀疏基部宽大的皮刺。小 叶常;5一7枚,卵状披针形或长卵形,长5--7厘米,宽2--3:厘米,顶端渐尖,基部宽楔形至 圆形,上面无毛或沿叶脉疏生栗毛,下而密被灰色绒毛,沿中咏有极稀疏小刺,边缘有不整 齐粗锐锯齿或缺刻状重锯齿;叶柄长5--7厘米,顶生小叶柄长1 5--2厘米,刨生小叶近 无柄,与叶轴幼时均被细柔毛,老时脱落,疏生钩刺;托叶线状技针形,具柔毛。花成短总 状花序;总花梗和花柄均被细柔毛;苞片披针形或线状披针形,有细柔毛;花萼外面密被细 柔毛;萼片卵形,长4--6毫米,宽3-4毫米,顶端急尖井具突尖头,在果期直立;花丝线 形;雌蕊多数。果实近球形,直径约1厘米,红色,无毛;核卵球形,有明显小孔穴。 果期 8-9月。
产地分布:产浙江(丽水县云峰)。
本种提示:本种和宽萼白n十莓R.Innomlnarus S.Moore val macrosePalus Metc.很相近,区别在 于后者常为3小叶;总花梗、花梗和花萼外面均密被黄灰色或黄色绒毛状长柔毛;花萼较 宽大:萼片宽卵形,长8-1 2毫米,宽5--7毫米。
参考文献:Rubus lish,alensis Ya d Lu,植物分类学报20(3):295,1982.
亚组概述:Subsect.Thyrsidtel(Focke) YU ET Lu,植物分类学报20(3):295.1982.--Sect,Idaeamhi Focke Set.thyrsidaei Focke,bibl.72(2):192. 1911 et 83:45.1914.P.P,本亚组有下列9种。

《Flora of China》 Vol. 9 (2003)
Rubus lishuiensis  T. T. Yu & L. T. Lu
丽水悬钩子   li shui xuan gou zi
Shrubs lianoid or scandent. Branchlets brown or reddish brown, terete, puberulous when young, gradually glabrescent, with sparse prickles broader at base. Leaves compound, usually 5–7-foliolate; petiole 5–7 cm, petiolule of terminal leaflet 1.5–2 cm, lateral leaflets subsessile, petiolule and rachis minutely pubescent, gradually glabrescent, with sparse, curved prickles; stipules linear-lanceolate, pubescent; blade of leaflets ovate-lanceolate or narrowly ovate, 5–7 × 2–3.5 cm, abaxially gray tomentose, with sparse, minute prickles along midvein, adaxial veins glabrous or pilose, base broadly cuneate to rounded, margin unevenly sharply serrate or incised-doubly serrate, apex acuminate. Inflorescences terminal or axillary, short subracemes; rachis and pedicels minutely pubescent, gradually glabrescent; bracts lanceolate or linear-lanceolate, minutely pubescent. Pedicel 6–11 mm. Calyx abaxially densely minute pubescent; sepals erect in fruit, ovate, 4–6 × 3–4 mm, apex acute and abruptly pointed. Stamens many; filaments linear. Pistils numerous. Aggregate fruit red, subglobose, ca. 1 cm in diam., glabrous; pyrenes ovoid-globose, prominently small-punctate. Fl. Jul, fr. Aug–Sep.
Forest margins, slopes. Low elevations. Zhejiang (Lishui Xian).

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