葡萄属一新名和一新种

A new name and a new species of Vitis L.(Vitaceae) from China

关键词:  葡萄属  三出蘡薁  文县蘡薁  新名  新种  中国

Key words:  Vitis  V.sinoternata W.T.Wang  V. wenxianensis W.T.Wang  new name  new species  China

摘要:

描述了自甘肃南部发现的葡萄属一新种，文县蘡薁Vitis wenxianensis W.T.Wang。此新种与特产浙江的三出蘡薁V.bryoniifolia Bunge var. ternata(W.T.Wang)C.L.Li有很近的亲缘关系，二者可能是由蘡薁V.bryoniifolia Bunge 衍生而出的一对姊妹群。基于上述认识，将三出蘡薁由变种提升至种的等级，但由于存在一个于1871年发表的种名V.ternata Baker,因此，必须为三出蘡薁拟定一新名。

Abstract:

A new species of the genus Vitis L.，V.wenxianensis W.T.Wang，is described from southern Gansu Province，west China. In having 3 sect leaves，it is closely related to V.bryoniifolia Bunge var.ternata(W.T.Wang)C.L.Li，an endemic of Zhejinag Province，East China，differing in its smaller leaves with all segments not divided，minutely denticulate at margin，and densely whitish velutinous abaxially. In the latter，the leaves are larger，up to 6 cm long and 6.2 cm broad，and the segments are all conspicuously dentate at margin，brown pubescent abaxially，and the lateral segments unequally 2 lobed. According to the author’s speculation that these two related taxa might be a pair of sister groups derived from the same species，V.bryoniifolia，in this paper，the latter variety is elevated to specific rank，and for this species a new name must be given owing to the presence of a species name，V.ternata Baker，which was published in 1871 from Brazil.