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矮生悬钩子Rubus clivicola Walker

矮生悬钩子Rubus clivicola Walker

别名:丘生莓;

科名:蔷薇科 Rosaceae

属名:悬钩子属 Rubus

《中国植物志》第37卷216页
  193.矮生悬钩子 图版31: 4-6
  Rubus clivicola Walker in Journ. Wash. Acad. Sci. 32 (9): 262. 1942.
  多年生矮草本,高3-10厘米;茎细,幼时具柔毛,平卧,节上生根。复叶具小叶5枚,稀3枚;小叶片倒卵形至近圆形,长0.5-1.5厘米,顶端圆钝,基部楔形,幼时两面疏生柔毛,稀下面散生褐色腺毛,边缘3深裂,有的几乎深裂至中脉,故具明显3裂片,裂片边缘再锐裂而成深尖的狭锯齿;叶柄长1-2厘米,具柔毛,小叶柄2-5毫米;托叶离生,卵圆形或近圆形,长约3毫米,顶端圆钝,全缘,微被柔毛。花常单生于枝顶,直径1-1.2厘米;花梗长1-2厘米,有柔毛;花萼具柔毛;萼片宽卵形,顶端尾状短尖,长5-6毫米;花瓣卵形至宽椭圆形,长6-8毫米,白色,浅裂或具粗锯齿,无毛,长于萼片;雄蕊30,排成一列,花药小,卵圆形,花丝宽扁;雌蕊约3枚,长约2.5毫米,子房光滑无毛,花住细。成熟果实未见。花期7-8月。
  产云南西北部(高黎贡山)。生海拔2800-4200米的山坡石砾地或林下。缅甸也有分布。
  本种和委陵悬钩子R. potentilloides W. E. Evans极相近,但其花瓣明显浅裂或有粗锯齿,雌蕊较少,仅3枚,雄蕊排成一列,仍可区分。
形态特征:多年生矮草本,高3—10厘米;茎细,幼时具柔毛,平卧,节上生根。复叶具小叶5枚, 稀3枚;小叶片倒卵形至近圆形,长0.5--1.5厘米,顶端圆钝,基部楔形;幼时两面疏生柔 毛;稀下面散生褐色腺毛,边缘3深裂,有的几乎深裂空中脉,故其明显3裂片,裂片边缘 再锐裂而成深尖的狭锯齿;叶柄长1--2廑来;具柔毛;小郎柄2--5毫米;托叶离生,卵圆 形或近圆形,长约3毫米;顶端圆钝,全缘,微被柔毛。花常单生子枝顶,直径1--1.2厘米; 花梗长1--2厘米,有柔毛;花萼其柔毛;萼片宽卵形,顶船尾状短尖,长5--6毫米;花瓣卵 形至宽椭圆形,长6--8毫米,白色,浅裂或其粗锯齿;无毛;长于萼片;雄蕊30,排成一列, 花药小,卵圆形,花丝宽扁;雌蕊约3枚,长约2.5毫米,子房光滑无毛;花柱细。成熟果 实未见。 花期7—8月。
产地分布:产云南西北部(高黎贡山)。生海拔2800—4200米的山坡石砾地或林下。缅甸也有 分布。
本种提示:本种和委陵悬钩子R.potentilloides W.E.Evans极相近,但其花瓣明显浅裂或有粗 锯齿,雌蕊较少,仅3枚,雄蕊排成一列;仍可区分。
参考文献:Rubus clivicola Walker in Journ.Wash.Acad.Sci 32(9):262.1942.

《Flora of China》 Vol. 9 (2003)
Rubus clivicola  E. Walker
矮生悬钩子   ai sheng xuan gou zi
Herbs perennial, dwarf, 3–10(–12) cm tall. Stems brown or purplish brown, prostrate, slender, rooting at nodes, pubescent. Leaves compound, 5-foliolate, rarely 3-foliolate; petiole 1–2 cm, pubescent, petiolule of leaflets 2–5 mm; stipules free, ovate or suborbicular, 3–4 mm, puberulous, margin entire, apex obtuse; blade of leaflets obovate to suborbicular, 0.5–1.5 cm × 6–11 mm, both surfaces pilose when young, rarely with scattered brown glandular hairs abaxially, base cuneate, margin deeply 3-divided nearly to midvein, with 3 distinct lobes; lobes sharply divided again into deep sharp incised teeth, apex obtuse. Inflorescences 1-flowered. Pedicel 1–2 cm, pubescent. Flowers 1–1.2 cm in diam. Calyx abaxially pubescent; sepals broadly ovate, 5–7 × 3–5 mm, apex shortly acuminate. Petals white, ovate to broadly elliptic, 6–8 × 4–5 mm, glabrous, margin lobed or coarsely serrate. Stamens 30, 1-seriate, much shorter than petals; filaments broad, complanate; anthers ovoid, small. Pistils ca. 3, ca. 2.5 mm; filaments slender; ovary glabrous, smooth. Aggregate fruit glabrous when young. Fl. Jul–Aug, fr. Aug–Sep.
Rocky slopes, forests; 2800--4200 m. NW Yunnan [N Myanmar].

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