栏目

常绿悬钩子Rubus sempervirens Yü et Lu

常绿悬钩子Rubus sempervirens 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151页
  112.常绿悬钩子 图版20: 1-3
  Rubus sempervirens Yu et Lu,植物分类学报20(4): 455. 1982.
  常绿灌木,高1-3米;枝圆柱形,红褐色,无毛,具钩状皮刺。单叶,革质,长卵形或宽卵状披针形,长11-22厘米,宽5.5-11厘米,顶端渐尖,基部心形,上面无毛,下面密被灰白色或浅灰黄色绒毛,沿叶脉稍具长柔毛,侧脉8-10对,基部有5条掌状脉,边缘不分裂或浅波状,有不整齐粗锐锯齿;叶柄长5-10厘米,无毛,具钩状皮刺;托叶早落。圆锥花序顶生;总花梗和花梗均具浅黄色绢状长柔毛;花梗长0.5-1厘米;苞片顶端深裂,裂片披针形,有绢状长柔毛;花直径1-1.4厘米;花萼外密被浅黄色绢状长柔毛,常无腺毛;萼片卵形或卵状披针形,顶端急尖至渐尖,全缘;常无花瓣;雄蕊多数,花丝线形;雌蕊约14-20,子房无毛;果实半球形,直径不到1厘米,包藏在萼内,红色,无毛;核肾形,具明显皱纹。花期5-6月,果期6-8月。
  产江西中部至西南部(吉安、遂川、井冈山)。生山坡、山脚或山谷中,海拔700-900米。
  本种和黄毛悬钩子R. fusco-rubens Focke相似,区别在于后者为落叶灌木;叶片纸质,长7-10厘米,宽4-6.5厘米,边缘有浅裂片;叶柄长2-4厘米,疏生长柔毛;花梗和花萼常混生细腺毛。又和毛鲁莓R. chroosepalus Focke比较,本种为常绿灌木;叶片革质,长卵形或宽卵状披针形,顶端渐尖;果实红色。毛萼莓为半常绿灌木;叶片近圆形或宽卵形,顶端尾状短渐尖;果实紫黑色或黑色。三种易于区别。
形态特征:常绿灌木,高1—3米;枝圆柱形,红褐色,无毛,具钩状皮刺。单叶,革质,长卵形或宽卵状披针形,长11—22厘米,宽5.5—11厘米,顶端渐尖,基部心形,上面无毛,下面密被灰白色或浅灰黄色绒毛,沿叶脉稍具长柔毛,侧脉8-10对,基部有5条掌状脉,边缘不分裂或浅波状,有不整齐粗锐锯齿;叶柄长5—10厘米,无毛,具钩状皮刺;托叶早落。圆锥花序顶生;总花梗和花梗均具浅黄色绢状长柔毛;.花梗长0.5一l厘米;苞片顶端深裂,裂片披针形,有绢状长柔毛;花直径1—1.4厘米;花萼外密被浅黄色绢状长柔毛,常无腺毛;萼片卵形或卵状披针形,顶端急尖至渐尖,全缘;常无花瓣;雄蕊多数,花丝线形;雌蕊约14—20,子房无毛;果实半球形,直径不到1厘米,包藏在萼内,红色,无毛;核肾形,具明显皱纹。 花期5—6月,果期6—8月。
产地分布:产江西中部至西南部(吉安、遂川、井冈山)。 生山坡、山脚或山谷中,海拔700—900·米。
本种提示:本种和黄毛悬钩子R.Fusco-rubens Focke相似,区别在于后者为落叶灌木;叶片纸质,长了7-10厘米,宽4—6.5厘米,边缘有浅裂片;叶柄长2—4厘米,疏生长柔毛;花梗和花萼常混生细腺毛。又和毛萼莓R.Chroosepalus Focke比较,本种为常绿灌木;叶片革质,长卵形或宽卵状披针形,顶端渐尖;果实红色。毛萼莓为半常绿灌木;叶片近圆形或宽卵形,顶端尾状短渐尖;果实紫黑色或黑色。三种易于区别。
参考文献:Rubus sempervlrens YG et Lu,植物分类学报20(4):455.1982.
亚组概述:Subsect.Elongati (Focke) Yu et Lu,植物分类学报20(4):454.1982.--Sect.Moluccani Focke,Bibl.Bot.72(1):71.1910 et 83:28.1914.p.p.--Sect.Elongati Focke,1.c.72(1):49.1910 et 83:24.1914.p.p.

《Flora of China》 Vol. 9 (2003)
Rubus jianensis  L. T. Lu & Boufford
常绿悬钩子   chang lu xuan gou zi
Replaced synonym: Rubus sempervirens T. T. Yü & L. T. Lu, Acta Phytotax. Sin. 20: 455. 1982, not Bigelow (1824).
Shrubs evergreen, 1–3 m tall. Branchlets reddish brown, terete, glabrous, with curved prickles. Leaves simple; petiole 5–10 cm, glabrous, with curved prickles; stipules caducous; blade narrowly ovate or broadly ovate-lanceolate, 11–22 × 5.5–11 cm, palmately 5-veined, lateral veins 8–10 pairs, leathery, abaxially densely gray or grayish yellow tomentose, slightly villous along veins, adaxially glabrous, base cordate, margin undivided or shallowly undulate, irregularly coarsely sharply serrate, apex acuminate. Inflorescences terminal, cymose panicles; rachis and pedicels yellowish sericeous-villous; bracts similar to stipules, apex deeply lobed; lobes lanceolate, sericeous-villous. Pedicel 1–1.4 cm. Flowers 1–1.4 cm in diam. Calyx abaxially densely yellowish sericeous-villous, usually without glandular hairs; sepals ovate or ovate-lanceolate, margin entire, apex acute to acuminate. Petals absent. Stamens many; filaments linear. Pistils ca. 14–20; ovary glabrous. Aggregate fruit red, semiglobose, 1 cm or less in diam., glabrous, enclosed in calyx; pyrenes reniform, distinctly rugose. Fl. May–Jun, fr. Jul–Aug.
Slopes, foothills, montane valleys; 700--900 m. C and SW Jiangxi.

TOP