陷脉悬钩子Rubus impressinervius Metc.
陷脉悬钩子Rubus impressinervius Metc.
70.陷脉悬钩子
Rubus impressinervius Metc. in Lingn. Sci. Journ. 11 (1): 12. 1932 “impressinervus”.
草本，高0.5-1米；茎圆柱形，褐色或红褐色，无毛，具稀疏小皮刺。单叶，披针形或长圆披针形，长10-22厘米，宽.2-5厘米，顶端渐尖或尾尖，基部圆形，两面无毛，边缘具稀疏锐锯齿，叶脉9-12对，在上面下陷，卞面突起并在中脉上具稀疏小皮刺；托叶线形，无毛。花常单生，顶生或腋生；花梗长1.5-2.5厘米，无毛，无刺；花大，直径达1.5厘米；花萼外面无毛；萼片卵形或披针形，顶端具突尖头，内萼片外面边缘具黄灰色绒毛，花后直立；花瓣白色；雄蕊多数，花丝较宽扁；花柱无毛，几与雄蕊等长，子房稍具柔毛；花托基部具长约5毫米的柄。果实大，近球形，直径约2厘米，褐红色，无毛；核小，具较深洼孔。花期6月，果期8月。
产江西、湖南、浙江、福建、广东。生山谷密林下、草丛或潮湿地区。
形态特征：草本，高0．5—1米；茎圆柱形，褐色或红褐色，无毛，具稀疏小皮刺。单叶，披针形或长圆披针形，长10—22厘米，宽2—5厘米，顶端渐尖或尾尖，基部圆形，两面无毛，边缘具稀疏锐锯齿，叶脉9—12对，在上面下陷，下面突起并在中脉上具稀疏小皮刺；托叶线形，无毛。花常单生，顶生或腋生；花梗长1．5—2．5厘米，无毛，无刺；花大，直径达1．5厘米；花萼外面无毛；萼片卵形或披针形，顶端具突尖头，内萼片外面边缘具黄灰色绒毛，花后直立；花瓣白色；雄蕊多数，花丝较宽扁；花柱无毛，几与雄蕊等长，子房稍具柔毛；花托基部具长约5毫米的柄。果实大，近球形，直径约2厘米，褐红色，无毛；核小，具较深洼孔.花期6月，果期8，月。
产地分布：产江西、湖南、浙江、福建、广东。生山谷密林下、草丛或潮湿地区。
参考文献：Rubus impressinervius Metc。In Lingn．Sci．Journ．11(1)：12．1932“impressmervus”
亚组概述：Subsect．Leucanthi．(Focke)Yu ct Lu，植物分类学报20(3)： 303．1982．——Sect．Leucanthi Focke，Bibl．Bot．72(2)：146．1911 et 83：37．1914．P．P． 本亚组有下列7种。
《Flora of China》 Vol. 9 (2003)
Rubus impressinervus F. P. Metcalf
陷脉悬钩子 xian mai xuan gou zi
Herbs 0.5–1 m tall. Stems brown or reddish brown, cylindric, glabrous, with sparse, small prickles. Leaves simple; stipules linear, 8–10 mm, glabrous, margin entire; blade lanceolate or oblong-lanceolate, 10–22 × 2–5 cm, veins 9–12 pairs, raised abaxially, impressed adaxially, both surfaces glabrous, adaxially with sparse, small prickles along midvein, base rounded, margin sparsely sharply serrate, apex acuminate to caudate. Inflorescences terminal or axillary, 1-flowered. Pedicel 1.5–2.5 cm, glabrous, unarmed. Flowers to 1.5 cm in diam. Calyx abaxially glabrous; sepals erect after anthesis, ovate or lanceolate, 1–1.3 cm × 6–9 mm, apex abruptly pointed, inner sepals with yellowish gray tomentose margin. Petals white, 1.1–1.4 cm × 6–10 mm. Stamens many, shorter than petals; filaments broadened and flattened. Pistils nearly as long as stamens; ovary slightly soft hairy; torus basally with ca. 5 mm stalk; styles glabrous. Aggregate fruit brownish red, subglobose, ca. 2 cm in diam., glabrous; pyrenes 1–2 mm, deeply foveolate. Fl. Jun–Jul, fr. Aug–Sep.
Montane valleys, dense forests, grasslands, wet waste places; 1300--1500 m. Fujian, Guangdong, Hunan, Jiangxi, Zhejiang.
科名：蔷薇科 Rosaceae
属名：悬钩子属 Rubus
70.陷脉悬钩子
Rubus impressinervius Metc. in Lingn. Sci. Journ. 11 (1): 12. 1932 “impressinervus”.
草本，高0.5-1米；茎圆柱形，褐色或红褐色，无毛，具稀疏小皮刺。单叶，披针形或长圆披针形，长10-22厘米，宽.2-5厘米，顶端渐尖或尾尖，基部圆形，两面无毛，边缘具稀疏锐锯齿，叶脉9-12对，在上面下陷，卞面突起并在中脉上具稀疏小皮刺；托叶线形，无毛。花常单生，顶生或腋生；花梗长1.5-2.5厘米，无毛，无刺；花大，直径达1.5厘米；花萼外面无毛；萼片卵形或披针形，顶端具突尖头，内萼片外面边缘具黄灰色绒毛，花后直立；花瓣白色；雄蕊多数，花丝较宽扁；花柱无毛，几与雄蕊等长，子房稍具柔毛；花托基部具长约5毫米的柄。果实大，近球形，直径约2厘米，褐红色，无毛；核小，具较深洼孔。花期6月，果期8月。
产江西、湖南、浙江、福建、广东。生山谷密林下、草丛或潮湿地区。
形态特征：草本，高0．5—1米；茎圆柱形，褐色或红褐色，无毛，具稀疏小皮刺。单叶，披针形或长圆披针形，长10—22厘米，宽2—5厘米，顶端渐尖或尾尖，基部圆形，两面无毛，边缘具稀疏锐锯齿，叶脉9—12对，在上面下陷，下面突起并在中脉上具稀疏小皮刺；托叶线形，无毛。花常单生，顶生或腋生；花梗长1．5—2．5厘米，无毛，无刺；花大，直径达1．5厘米；花萼外面无毛；萼片卵形或披针形，顶端具突尖头，内萼片外面边缘具黄灰色绒毛，花后直立；花瓣白色；雄蕊多数，花丝较宽扁；花柱无毛，几与雄蕊等长，子房稍具柔毛；花托基部具长约5毫米的柄。果实大，近球形，直径约2厘米，褐红色，无毛；核小，具较深洼孔.花期6月，果期8，月。
产地分布：产江西、湖南、浙江、福建、广东。生山谷密林下、草丛或潮湿地区。
参考文献：Rubus impressinervius Metc。In Lingn．Sci．Journ．11(1)：12．1932“impressmervus”
亚组概述：Subsect．Leucanthi．(Focke)Yu ct Lu，植物分类学报20(3)： 303．1982．——Sect．Leucanthi Focke，Bibl．Bot．72(2)：146．1911 et 83：37．1914．P．P． 本亚组有下列7种。
《Flora of China》 Vol. 9 (2003)
Rubus impressinervus F. P. Metcalf
陷脉悬钩子 xian mai xuan gou zi
Herbs 0.5–1 m tall. Stems brown or reddish brown, cylindric, glabrous, with sparse, small prickles. Leaves simple; stipules linear, 8–10 mm, glabrous, margin entire; blade lanceolate or oblong-lanceolate, 10–22 × 2–5 cm, veins 9–12 pairs, raised abaxially, impressed adaxially, both surfaces glabrous, adaxially with sparse, small prickles along midvein, base rounded, margin sparsely sharply serrate, apex acuminate to caudate. Inflorescences terminal or axillary, 1-flowered. Pedicel 1.5–2.5 cm, glabrous, unarmed. Flowers to 1.5 cm in diam. Calyx abaxially glabrous; sepals erect after anthesis, ovate or lanceolate, 1–1.3 cm × 6–9 mm, apex abruptly pointed, inner sepals with yellowish gray tomentose margin. Petals white, 1.1–1.4 cm × 6–10 mm. Stamens many, shorter than petals; filaments broadened and flattened. Pistils nearly as long as stamens; ovary slightly soft hairy; torus basally with ca. 5 mm stalk; styles glabrous. Aggregate fruit brownish red, subglobose, ca. 2 cm in diam., glabrous; pyrenes 1–2 mm, deeply foveolate. Fl. Jun–Jul, fr. Aug–Sep.
Montane valleys, dense forests, grasslands, wet waste places; 1300--1500 m. Fujian, Guangdong, Hunan, Jiangxi, Zhejiang.