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委陵悬钩子Rubus potentilloides W. E. Evans

委陵悬钩子Rubus potentilloides W. E. Evans

别名:假委陵菜莓;委陵菜悬钩子;

科名:蔷薇科 Rosaceae

属名:悬钩子属 Rubus

《中国植物志》第37卷216页
  192.委陵悬钩子
  Rubus potentilloides W. E. Evans in Not. Roy. Bot. Gard. Edinb. 13: 179. 1921. Walker in Journ. Wash. Acad. Sci. 32 (9): 262. 1942.
  多年生矮小草本,高3-8厘米;茎细,平卧、幼时具柔毛,节上生根;花枝直立,有柔毛。复叶具小叶5枚,稀3枚;小叶片近圆形,直径3-9毫米,顶端圆钝,基部楔形,无毛或微具毛,边缘深裂,有时几乎深裂达中脉,有明显3裂片,裂片再锐裂并有深而尖的锯齿;叶柄长1-3厘米,具柔毛,小叶柄长2-4毫米;托叶离生,宽椭圆形或近圆形,长约3毫米,圆钝,全缘。花常单生,直径1.5-2厘米;花梗长6-12毫米,有柔毛;花萼外面有柔毛,内面近无毛;萼片宽卵形,稀较窄,长4-5毫米,顶端突然渐尖,尖头带黑色;花瓣宽椭圆形,白色,长6-7毫米,顶端圆钝或截形,全缘或波状,稀浅裂;雄蕊约30,无毛,排成二列,外层雄蕊长约2毫米,内层的较短,花丝扁平,花药小;雌蕊约24,子房无毛,花柱长约2毫米,细瘦,柱头截形。成熟果实未见。花期7月。
  产云南北部。生高山杂木林下阴湿处,海拔约2700-3500米。缅甸也有分布。
形态特征:多年生矮小萆本,高3—8厘米;茎细,平卧、幼时具柔毛,节上生根;花枝直立,有柔 毛。复叶具小叶5枚,稀3枚;小叶片近圆形,直径3—9毫米,顶端圆钝,基部楔形,无毛 或微具毛,边缘滦裂,有时几乎深裂达中脉,有明显3裂片,裂片再锐裂并有深而尖的锯 齿;叶柄长1—3.厘米,具柔毛,小叶柄长2—4毫米;托叶离生,宽椭圆形或近圆形,长约3 毫米,圆钝,全缘;花常单生,直径1.5—2厘米;花梗长6—12毫米,有柔毛;花萼外面有 柔毛,内面近无毛;萼片宽卵形,稀较窄,长4—3毫米,顶端突然渐尖;尖头带黑色;花瓣宽 椭圆形,白色,长6—7毫米,顶端圆钝或截形,全缘或波状,稀浅裂;雄蕊约30,无毛,排成 二列,外层雄蕊长约2毫米,内层的较短,花丝扁平,花药小;雌蕊约24,子房无毛,花柱长 约2毫米,细瘦,柱头截形。成熟果实未见。 花期7月。
产地分布:产云南北部。生高山杂木林下阴湿处;海拔约2700—3500米。缅甸也有分布。
参考文献:Rubus potentilloldes W.E.Evans in Not.Roy Bot.Gard.Edinb.13:179.1921; Walker in Journ.Wash.Acad.Sci 32(9):262.1942.

《Flora of China》 Vol. 9 (2003)
Rubus potentilloides  W. E. Evans
委陵悬钩子   wei ling xuan gou zi
Herbs perennial, dwarf, 3–8 cm tall. Stems prostrate, rooting at nodes, slender, pubescent when young, glabrescent; flowering branchlets erect, pubescent. Leaves compound, 5-foliolate, rarely 3-foliolate; petiole 1–3 cm, pubescent, petiolule of leaflets 2–4 mm; stipules free, broadly elliptic or suborbicular, 3–4 mm, margin entire, apex obtuse; blade of leaflets suborbicular, 3–8(–12) × 4–10 mm, both surfaces glabrous or puberulous, base cuneate, margin deeply divided nearly to midvein, with 3 distinct lobes; lobes sharply divided again, deeply sharply serrate, apex obtuse. Inflorescences usually 1-flowered. Pedicel 6–12 mm, pubescent. Flowers 1.5–2 cm in diam. Calyx abaxially pubescent; sepals broadly ovate, rarely narrower, 4–5 × 2–3 mm, apex abruptly acuminate, with blackish tip. Petals white, broadly elliptic, 6–7 × 4–6 mm, margin entire or undulate, rarely lobed, apex obtuse or subtruncate. Stamens 30, in 2 whorls, outer sepals ca. 2 mm, inner sepals shorter; filaments broad, flat; anthers small. Pistils ca. 24; ovary glabrous; styles ca. 2 mm, slender; stigma truncate. Fruit unknown. Fl. Jun–Jul.
Mixed forests in high mountains; 2700--3500 m. NW Yunnan [N Myanmar].

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