栏目

藏南悬钩子Rubus austro-tibetanus Yü et Lu

藏南悬钩子Rubus austro-tibetanus 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057页
  17. 藏南悬钩子(植物分类学报) 图版4:1-3
  Rubus austro-tibetanus Yu et Lu, 植物分类学报 18(4): 496.1980.
  灌木,高1-2米;小枝圆柱形,棕褐色至紫褐色,幼时被柔毛,逐渐脱落,疏生皮刺。小叶通常3枚,宽卵形,顶生小叶有时卵状披针形,长4-8厘米,宽3-6厘米,顶端短渐尖至尾尖,基部宽楔形至圆形,上面无毛,下面密被灰白色绒毛,边缘有不规则粗锯齿或重锯齿,有时在花序下方的叶为3裂单叶,顶生小叶与侧生小叶不分开;叶柄长5-8厘米,顶生小叶柄长1-2.5厘米,侧生小叶具极短柄或近无柄,幼时具柔毛,逐渐脱落,疏生小皮刺;托叶线形,长1-1.3厘米,具柔毛。花5-10朵成顶生伞房状花序或1-3朵腋生;总花梗和花梗具柔毛,有时疏生小皮刺;花梗长1-2厘米;苞片和托叶相似,但较小;花直径1.5-2厘米;萼筒紫红色,外面被柔毛,有时疏生小皮刺;萼片宽卵形或卵状披针形,长0.8-1.4厘米,顶端具突尖头或渐尖,被灰白色绒毛,花后直立开展;花瓣宽倒卵形或椭圆形,紫红色,两面具柔毛,基部有短爪;雄蕊多数,花丝线形,比花柱长得多;雌蕊多数,子房和花柱基部密被灰白色绒毛。果实长卵形,长1-1.5厘米,直径约1厘米,红色,具灰白色绒毛,具较多数小核果;核有网纹。花期6-7月,果期8-9月。
  产云南西部(高黎贡山西坡和景东)、西藏南部(墨脱、米林、隆子、错那、亚东、定结、聂拉木、吉隆)。生山坡路旁灌丛、杂木林下或山谷常绿阔叶林内,海拔2600-3800米。
  此种和桔红悬钩子 R. aurantiacus Focke 区别在于后者花白色至浅红色;果实半球形,桔黄色或桔红色,具较少数小核果。
  本种与分布华北、东北和西北的复盆子 R. idaeus L. 的异点在于后者小叶在营养枝上常为5-7数;花萼外被绒毛状短柔毛和稀疏针刺;花瓣白色;果实近球形,易于区别。
形态特征:灌木,高1—2米;小枝圆柱形,棕褐色至紫褐色,幼时被柔毛,逐渐脱落,疏生皮刺。 小叶通常3枚)宽卵形,顶生小叶有时卵状披针形,长4—8厘米,宽3—6厘米,顶端短渐 尖至尾尖,基部宽楔形至圆形,上面无毛,下面密被灰白色绒毛,边缘有不规则粗锯齿或重 锯齿,有时在花序下方的叶为3裂单叶,顶生小叶与侧生小叶不分开;叶柄长5—8厘米, 顶生小叶柄长1—2.5厘米,侧生小叶具极短柄或近无柄,幼时具柔毛,逐渐脱落,疏生小 皮刺;托叶线形):长1—1.3厘米,具柔毛。花5—10朵成顶生伞房状花序或l一3朵腋生; 总花梗和花梗具柔毛,有时疏生小皮刺;花梗长1,一2厘米;苞片和托叶相似,但较小;花直 径1.5—2厘米;萼筒紫红色,外面被柔毛,有时疏生小皮刺;萼片宽卵形或卵状披针形,长 0.8—1.4厘米,顶端具突尖头或渐尖,被灰白色绒毛,花后直立开展;花瓣宽倒卵形或椭圆 形,紫红色,两面具柔毛,基部有短爪;雄蕊多数,花丝线形,比花柱长得多;雌蕊多数,子房 和花柱基部密被灰白色绒毛。果实长卵形,长1—1.5厘米,直径约1厘米,红色,具灰白 ·色绒毛,具较多数小核果;核有网纹。 花期6-7月,果期8—9月。
产地分布:产云南西部(高黎贡山西坡和景东)、西藏南部(墨脱、米林、隆子、错那、亚东、定结、聂 拉木、吉隆)。生山坡路旁灌丛、杂木林下或山谷常绿阔叶林内,海拔2600—3800米。
本种提示:此种和桔红悬钩子R.Aurantiacus Focke区别在于后者花白色至浅红色;果实半球形, 桔黄色或桔红色,具较少数小核果。本种与分布华北、东北和西北的复盆子R.Idaeus L的异点在于后者小叶在营养枝 上常为5-7数;花萼外被绒毛状短柔毛和稀疏针刺;花瓣白色;果实近球形,易于区别o
亚组概述:Subsect.Idaeanthi(Foeke) yu et.Lu,植物分类学报20(3): 296.1982.—Sect.Pungentes Focke,Bibl.Bot。72(2):160.1911 Cr 83:40.1914 P. P.——Sect. Ldaeanthi Focke,l.C.72(2) :171.1911et 83:43.,1914·p·.p、

《Flora of China》 Vol. 9 (2003)
Rubus austrotibetanus  T. T. Yu & L. T. Lu
藏南悬钩子   zang nan xuan gou zi
Shrubs 1–2 m tall. Branchlets brownish to purplish brown, cylindric, soft hairy, gradually glabrescent, with sparse prickles. Leaves imparipinnate, usually 3-foliolate, those below inflorescence sometimes 3-lobed; petiole 5–8 cm, petiolule of terminal leaflet 1–2.5 cm, lateral leaflets shortly petiolulate or subsessile, pubescent when young, glabrescent, with sparse, minute prickles; stipules linear, 1–1.3 cm, pubescent; blade of leaflets broadly ovate, terminal leaflet sometimes ovate-lanceolate, 4–8 × 3–6 cm, abaxially densely gray tomentose, adaxially glabrous, base broadly cuneate to rounded, margin unevenly coarsely serrate or doubly serrate, apex shortly acuminate to caudate. Inflorescences terminal or axillary, corymbose or short racemes, 5–10-flowered, sometimes axillary and 1–3-flowered; rachis and pedicels pubescent, with sparse, minute prickles; bracts linear, smaller than stipules. Pedicel 1–2 cm. Flowers 1.5–2 cm in diam. Calyx tube purple, abaxially pubescent, sometimes with sparse, minute prickles; sepals erect after anthesis, broadly ovate or ovate-lanceolate, 0.8–1.4 cm, gray tomentose, apex abruptly pointed or acuminate. Petals purple, broadly obovate or elliptic, 5–8 mm, both surfaces soft hairy, base shortly clawed. Stamens many, shorter than petals; filaments linear. Pistils numerous, shorter than stamens; ovary and basal part of style gray tomentose. Aggregate fruit red, narrowly ovoid, 1–1.5 cm, ca. 1 cm in diam., gray tomentose; drupelets many; pyrenes reticulate. Fl. Jun–Jul, fr. Aug–Sep.
Mixed forests, broad-leaved evergreen forests, valleys, slopes on roadsides, thickets; 2600--3800 m. S Xizang, W Yunnan.

TOP