栏目

角裂悬钩子Rubus lobophyllus Shih ex Metc.

角裂悬钩子Rubus lobophyllus Shih ex Metc.

别名:裂叶悬钩子;

科名:蔷薇科 Rosaceae

属名:悬钩子属 Rubus

《中国植物志》第37卷147页
  106.角裂悬钩子
  Rubus lobophyllus Shih ex Metc. in Lingn. Sci. Journ. 19 (1): 29. Pl. 4. 1940.
  攀援灌木,高达3米;小枝灰褐色,具柔毛,疏生钩状小皮刺。单叶、卵形或长卵形,长8-14厘米,宽5-12厘米,顶端渐尖,基部心形,上面除沿叶脉具柔毛外均无毛,下面密被浅灰至浅黄灰色绒毛,沿叶脉具较长柔毛,边缘明显浅裂,侧生裂片三角形,顶生裂片三角披针形,比侧生者长大得多,边缘有不整齐具突尖头的锐锯齿,侧脉4-5对;叶柄长3-7厘米,密被长柔毛,疏生钩状小皮刺;托叶离生,长1-1.4厘米,有长柔毛,羽状或掌状深裂,裂片披针形或线形。顶生花序狭圆锥状或近总状,腋生者近伞房状或数朵簇生;总花梗和花梗有浅黄色长柔毛;花梗长1-1.5厘米;苞片与托叶相似;花直径6-8毫米;花萼外密被浅黄色长柔毛和绒毛;萼片卵形,顶端急尖,外萼片掌状或羽状条裂,裂片线形,在果期直立;花瓣近圆形或倒卵形,白色,与萼片等长或稍长;雄蕊多数,花丝线形,无毛;雌蕊多数,子房无毛,花柱比雄蕊长得多。果实小,近球形,直径7-9厘米,红色,无毛,包藏在宿萼内;核具皱纹。花期6-7月,果期8月。
  产湖南、广西、广东、贵州、云南。生山谷、水沟边或山坡阴处疏密林下,海拔500-2100米。
  此种和桂滇悬钩子R. shihae Metc.区别在于后者叶片下面密被黄色至锈色绒毛,边缘波状或稍微浅裂,基部截形至浅心形;萼片披针形。
  从本种模式标本广西秦仁昌5926号观察,花枝上的花数朵簇生于叶腋,可能系幼嫩花枝之故。根据广西、广东和湖南地区所采多数标本,顶生花序为疏松狭圆锥状或近总,状,腋生花序近伞房状或花数朵簇生,故对原始记载略作修改。
形态特征:攀援灌木,高达3米;小枝灰褐色,具柔毛,疏生钩状小皮刺。单叶、卵形或长卵形,长 8—14厘米,宽5—12厘米,顶端渐尖,基部心形,上面除沿叶脉具柔毛外均无毛,下面密 被浅灰至浅黄灰色绒毛,沿叶脉具较长柔毛,边缘明显浅裂,侧生裂片三角形,顶生裂片三 角披针形,比侧生者长大得多,边缘有不整齐具突尖头的锐锯齿,侧脉4—5对;叶柄长 3一7厘米,密被长柔毛,疏生钩状小皮刺;托叶离生,长1—1.4厘米,有长柔毛,羽状或掌 状深裂,裂片披针形或线形。顶生花序狭圆锥状或近总状,腋生者近伞房状或数朵簇生;总 花梗和花梗有浅黄色长柔毛;花梗长1—1,5厘米;苞片与托叶相似;花直径6—8毫米;花 萼外密被浅黄色长柔毛和绒毛;萼片卵形,顶端急尖,外萼片掌状或羽状条裂,裂片线形, 在果期直立;花瓣近圆形或倒卵形,白色,与萼片等长或稍长;雄蕊多数,花丝线形,无毛; 雌蕊多数,子房无毛,花柱比雄蕊长得多。果实小,近球形,直径7一9厘米,红色,无毛,包, 藏在宿萼内;核具皱纹。 花期6一7月,果期8月。
产地分布:产湖南、广西、广东、贵州、云南。生山谷、 水沟边或山坡阴处疏密林下,海拔500— 2100米。
本种提示:此种和桂滇悬钩子 R.Shihae Metc. 区别在于后者叶片下面密被黄色至锈色绒毛,边 缘波状或稍微浅裂,基部截形至浅心形:萼片披针形。从本种模式标本广西秦仁昌5926号观察, 花枝上的花数朵簇生于叶腋,可能系幼嫩 花枝之故。根据广西,广东和湖南地区所采多数标本, 顶生花序为疏松狭圆锥状或近总 状;腋生花序近伞房状或花数朵簇生,故对原始记载略作修改 。
参考文献:Rubus lobophyilus Shih cx Metc.In Lingn.Sci.Journ.19(1):29·p1。4.1940.
亚组概述:Subsec?Elongatl(Focke)Yfi ec L?椌爍剩簆孻扦¥20(4I 454.1982.——Sect.Moluccani Focke,·BiN.Bot.72(1):71。1910 c[83:28.19l4·p. P.— Sect.Elongati Focke,1.C.72(1):49.1910 et 83:24.1914.P.P. 本亚组有下列15种。

《Flora of China》 Vol. 9 (2003)
Rubus lobophyllus  Y. K. Shih ex F. P. Metcalf
角裂悬钩子   jiao lie xuan gou zi
Shrubs scandent, to 3 m tall. Branchlets grayish brown, terete, soft hairy, glabrescent, with sparse, curved prickles. Leaves simple; petiole 3–7 cm, densely villous, with sparse, curved minute prickles; stipules free, 1–1.4 cm, pilose, pinnately or palmately lobed; lobes lanceolate or linear; blade ovate to narrowly ovate, 8–14 × 5–12 cm, lateral veins 4 or 5 pairs, abaxially densely gray to yellowish gray tomentose and villous along veins, adaxially glabrous except villous along veins, base cordate, margin distinctly lobed, terminal lobe triangular-lanceolate, much larger and longer than lateral triangular ones, irregularly abruptly sharply serrate, apex acuminate. Inflorescences terminal or axillary, terminal ones narrow cymose panicles or subracemes, axillary ones subcorymbose or flowers several in a cluster; rachis and pedicels yellowish villous; bracts 0.8–1.2 cm, villous, pinnately or palmately lobed; lobes linear or lanceolate. Pedicel 1–1.5 cm. Flowers 6–8 mm in diam. Calyx abaxially densely yellowish villous and intermixed tomentose; sepals ovate, 6–8 × 3–5 mm, apex acute, outer sepals palmately or pinnately laciniate; lobes linear, erect in fruit. Petals white, suborbicular or obovate, slightly longer than or nearly as long as sepals. Stamens numerous, in 2 whorls; filaments linear, glabrous. Pistils many, much longer than stamens; ovary glabrous. Aggregate fruit red, subglobose, 7–9 mm in diam., glabrous, enclosed in calyx; pyrenes rugose. Fl. May–Jul, fr. Aug–Sep.
Montane valleys, shrubby hillsides, forests on shaded slopes, ravines; 500--2100 m. Guizhou, Guangdong, Guangxi, Hunan, Yunnan.

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