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.