西畴悬钩子Rubus xichouensis Yü et Lu
西畴悬钩子Rubus xichouensis Yü et Lu
98.西畴悬钩子 图版17: 5-7
Rubus xichouensis Yu et Lu,植物分类学报20 (3): 310. pl. 2. f. 4. 1982.
攀援灌木，高约0.5-1米；枝红褐色或棕褐色，幼时具浅黄色长柔毛，老时无毛，无刺或具极稀疏不明显小皮刺。单叶，近革质，长圆披针形，长11-19厘米，宽2.5-5厘米，顶端尾尖，基部圆形，上面无毛或仅沿叶脉稍具柔毛，下面密被黄色或灰黄色绒毛，沿叶脉稍具长柔毛，边缘有不整齐具突尖头的锐锯齿，侧脉7-10对；叶柄长1-1.5厘米，红褐色，幼时有浅黄色长柔毛；托叶分离，早落，狭长圆形，近顶端较宽，掌状分裂，裂片线形，具柔毛。花序具少数花朵，顶生花序呈短圆锥状，腋生者成短总状或伞房状；总花梗和花梗密被黄色绢状长柔毛；花梗长0.5-1厘米；苞片和托叶相似，惟较小，有黄色绢毛状长柔毛；花直径达1厘米；花萼外密被黄色绢状长柔毛，仅萼片边缘具绒毛；萼片宽卵形，顶端急尖或短突尖，全缘或外萼片顶端浅条裂，花后常直立；花瓣近圆形或宽倒卵形，白色，几无爪，无毛，与萼片近等长；雄蕊多数，花丝线形，无毛；雌蕊约30-40，花柱长于雄蕊，无毛。果实未见。
产云南东南部。生中海拔山坡疏林内或常绿阔叶林下。
此种和长叶悬钩子R. dolichophyllus Hand. -Mazz.及饶平悬钩子R. raopingensis Yuet Lu易于区别，其植株无腺毛；叶柄长10-15毫米；叶片下面被黄色或灰黄色绒毛；花成短圆锥状、短总状或伞房状花序；花序和花萼密被黄色绢状长柔毛，是其特点。
形态特征：攀援灌木，高约0．5—1米；枝红褐色或棕褐色，幼时具浅黄色长柔毛，老时无毛，无刺或具极稀疏不明显小皮刺。单叶，近革质，长圆披针形，长11—19厘米，宽2．5—5厘米，顶端尾尖，基部圆形，上面无毛或仅沿叶脉稍具柔毛，下面密被黄色或灰黄色绒毛，沿叶脉稍 。具长柔毛，边缘有不整齐具突尖头的锐锯齿，侧脉7-10对；叶柄长1—1．5厘米，红褐色， 幼时有浅黄色长柔毛；托叶分离，早落，狭长圆形，近顶端较宽，掌状分裂，裂片线形，具柔毛。花序具少数花朵，顶生花序呈短圆锥状，腋生者成短总状或伞房状；总花梗和花梗密被黄色绢状长柔毛；花梗长0．5—1厘米；苞片和托叶相似，惟较小，有黄色绢毛状长柔毛；花直径达1厘米；花萼外密被黄色绢状长柔毛，仅萼片边缘具绒毛；萼片宽卵形，顶端急尖或短突尖，全缘或外萼片顶端浅条裂，，花后常直立；花瓣近圆形或宽倒卵形，白色，几无爪，无毛，与萼片近等长；雄蕊多数，花丝线形，无毛；雌蕊约30一40，花柱长于雄蕊，无毛。果实未见。
产地分布：产云南东南部。生中海拔山坡疏林内或常绿阔叶林下
本种提示：此种和长叶悬钩子R．Dolichophyllus Hand，—Mazz．及饶平悬钩子R．Raopingensis YU ct Lu易于区别，其植株无腺毛；叶柄长10一15毫米；叶片下面被黄色或灰黄色绒毛；花 成短圆锥状、短总状或伞房状花序；花序和花萼密被黄色绢状长柔毛，是其特点。
参考文献：rubus xiachousnsis yu et lu ,nd 植物分类学报20(3)：310．Pl．2．F.4.1982．
亚组概述：Subsect.Dolichophylli Yu et Lu，植物分类·学报20(3)：309．19S2．---Sect，Elongati .Focke，Bibl．Bot．。72(1)：49．1910. Et 83：24.1914. P．P．——Sect．Pirifolii Focke, 1.c.72 (1) :63. 1910 et 83：27， 1914． P．P．
《Flora of China》 Vol. 9 (2003)
Rubus xichouensis T. T. Yu & L. T. Lu
西畴悬钩子 xi chou xuan gou zi
Shrubs climbing, 0.5–1 m tall. Branchlets brownish to reddish brown, yellowish sericeous-villous when young, glabrescent, unarmed or with sparse, minute prickles. Leaves simple; petiole reddish brown, 1–1.5 cm, yellowish sericeous-villous when young; stipules caducous, free, narrowly oblong, but broader near apex, to 1 cm, palmately divided, lobes linear, soft hairy; blade oblong-lanceolate, 11–19 × 2.5–5 cm, lateral veins 7–10 pairs, subleathery, abaxially densely yellow or grayish yellow tomentose, with sparse, intermixed long soft hairs along veins, adaxially glabrous or slightly pubescent only along veins, base rounded, margin irregularly sharply serrate, teeth abruptly pointed, apex caudate. Inflorescences terminal or axillary, terminal ones short cymose panicles, 4–6 cm, few flowered, axillary ones short racemes or shortly subcorymbose, sometimes flowers fewer, in clusters; rachis and pedicels densely yellow sericeous-villous; bracts narrowly oblong, less than 1 cm, palmately lobed; lobes linear, yellow sericeous-villous. Pedicel 5–10 mm. Flowers to 1 cm in diam. Calyx abaxially densely yellow sericeous-villous; sepals erect after anthesis, broadly ovate, margin tomentose, entire or outer sepals shallowly laciniate apically, apex acute or shortly acuminate. Petals white, suborbicular or broadly obovate, nearly as long as sepals, glabrous. Stamens many, glabrous; filaments linear. Pistils 30–40, longer than stamens; style glabrous. Fruit unknown. Fl. Apr–May.
Sparse forests on slopes, broad-leaved evergreen forests; Medium elevations. SE Yunnan.
别名：
科名：蔷薇科 Rosaceae
属名：悬钩子属 Rubus
98.西畴悬钩子 图版17: 5-7
Rubus xichouensis Yu et Lu,植物分类学报20 (3): 310. pl. 2. f. 4. 1982.
攀援灌木，高约0.5-1米；枝红褐色或棕褐色，幼时具浅黄色长柔毛，老时无毛，无刺或具极稀疏不明显小皮刺。单叶，近革质，长圆披针形，长11-19厘米，宽2.5-5厘米，顶端尾尖，基部圆形，上面无毛或仅沿叶脉稍具柔毛，下面密被黄色或灰黄色绒毛，沿叶脉稍具长柔毛，边缘有不整齐具突尖头的锐锯齿，侧脉7-10对；叶柄长1-1.5厘米，红褐色，幼时有浅黄色长柔毛；托叶分离，早落，狭长圆形，近顶端较宽，掌状分裂，裂片线形，具柔毛。花序具少数花朵，顶生花序呈短圆锥状，腋生者成短总状或伞房状；总花梗和花梗密被黄色绢状长柔毛；花梗长0.5-1厘米；苞片和托叶相似，惟较小，有黄色绢毛状长柔毛；花直径达1厘米；花萼外密被黄色绢状长柔毛，仅萼片边缘具绒毛；萼片宽卵形，顶端急尖或短突尖，全缘或外萼片顶端浅条裂，花后常直立；花瓣近圆形或宽倒卵形，白色，几无爪，无毛，与萼片近等长；雄蕊多数，花丝线形，无毛；雌蕊约30-40，花柱长于雄蕊，无毛。果实未见。
产云南东南部。生中海拔山坡疏林内或常绿阔叶林下。
此种和长叶悬钩子R. dolichophyllus Hand. -Mazz.及饶平悬钩子R. raopingensis Yuet Lu易于区别，其植株无腺毛；叶柄长10-15毫米；叶片下面被黄色或灰黄色绒毛；花成短圆锥状、短总状或伞房状花序；花序和花萼密被黄色绢状长柔毛，是其特点。
形态特征：攀援灌木，高约0．5—1米；枝红褐色或棕褐色，幼时具浅黄色长柔毛，老时无毛，无刺或具极稀疏不明显小皮刺。单叶，近革质，长圆披针形，长11—19厘米，宽2．5—5厘米，顶端尾尖，基部圆形，上面无毛或仅沿叶脉稍具柔毛，下面密被黄色或灰黄色绒毛，沿叶脉稍 。具长柔毛，边缘有不整齐具突尖头的锐锯齿，侧脉7-10对；叶柄长1—1．5厘米，红褐色， 幼时有浅黄色长柔毛；托叶分离，早落，狭长圆形，近顶端较宽，掌状分裂，裂片线形，具柔毛。花序具少数花朵，顶生花序呈短圆锥状，腋生者成短总状或伞房状；总花梗和花梗密被黄色绢状长柔毛；花梗长0．5—1厘米；苞片和托叶相似，惟较小，有黄色绢毛状长柔毛；花直径达1厘米；花萼外密被黄色绢状长柔毛，仅萼片边缘具绒毛；萼片宽卵形，顶端急尖或短突尖，全缘或外萼片顶端浅条裂，，花后常直立；花瓣近圆形或宽倒卵形，白色，几无爪，无毛，与萼片近等长；雄蕊多数，花丝线形，无毛；雌蕊约30一40，花柱长于雄蕊，无毛。果实未见。
产地分布：产云南东南部。生中海拔山坡疏林内或常绿阔叶林下
本种提示：此种和长叶悬钩子R．Dolichophyllus Hand，—Mazz．及饶平悬钩子R．Raopingensis YU ct Lu易于区别，其植株无腺毛；叶柄长10一15毫米；叶片下面被黄色或灰黄色绒毛；花 成短圆锥状、短总状或伞房状花序；花序和花萼密被黄色绢状长柔毛，是其特点。
参考文献：rubus xiachousnsis yu et lu ,nd 植物分类学报20(3)：310．Pl．2．F.4.1982．
亚组概述：Subsect.Dolichophylli Yu et Lu，植物分类·学报20(3)：309．19S2．---Sect，Elongati .Focke，Bibl．Bot．。72(1)：49．1910. Et 83：24.1914. P．P．——Sect．Pirifolii Focke, 1.c.72 (1) :63. 1910 et 83：27， 1914． P．P．
《Flora of China》 Vol. 9 (2003)
Rubus xichouensis T. T. Yu & L. T. Lu
西畴悬钩子 xi chou xuan gou zi
Shrubs climbing, 0.5–1 m tall. Branchlets brownish to reddish brown, yellowish sericeous-villous when young, glabrescent, unarmed or with sparse, minute prickles. Leaves simple; petiole reddish brown, 1–1.5 cm, yellowish sericeous-villous when young; stipules caducous, free, narrowly oblong, but broader near apex, to 1 cm, palmately divided, lobes linear, soft hairy; blade oblong-lanceolate, 11–19 × 2.5–5 cm, lateral veins 7–10 pairs, subleathery, abaxially densely yellow or grayish yellow tomentose, with sparse, intermixed long soft hairs along veins, adaxially glabrous or slightly pubescent only along veins, base rounded, margin irregularly sharply serrate, teeth abruptly pointed, apex caudate. Inflorescences terminal or axillary, terminal ones short cymose panicles, 4–6 cm, few flowered, axillary ones short racemes or shortly subcorymbose, sometimes flowers fewer, in clusters; rachis and pedicels densely yellow sericeous-villous; bracts narrowly oblong, less than 1 cm, palmately lobed; lobes linear, yellow sericeous-villous. Pedicel 5–10 mm. Flowers to 1 cm in diam. Calyx abaxially densely yellow sericeous-villous; sepals erect after anthesis, broadly ovate, margin tomentose, entire or outer sepals shallowly laciniate apically, apex acute or shortly acuminate. Petals white, suborbicular or broadly obovate, nearly as long as sepals, glabrous. Stamens many, glabrous; filaments linear. Pistils 30–40, longer than stamens; style glabrous. Fruit unknown. Fl. Apr–May.
Sparse forests on slopes, broad-leaved evergreen forests; Medium elevations. SE Yunnan.