甘肃省华亭县天南星科属种分类鉴定

Taxonomic Identification of Araceae Taxa in Huating County of Gansu Province

通过实地考察和文献查阅等方法对甘肃省华亭县天南星科各分类群进行了整理.结果表明,华亭县天南星科植物共11属,16种,1变型,其属和种分别占全国分布的31.43%和8.29%.除芋属(Colocasia)无分布外,基本上包括了天南星科在甘肃省分布的全部属,种数在全省种数分布中占48.57%.种数分布最多的一个属为天南星属(Arisaema),分布有5种1变型,其次为喜林芋属(Philodendron),分布有2种,其余9个属各分布1种.此外,调查中发现华亭县分布新纪录有3种.同时编制了华亭县天南星科植物分属与分种检索表.

The research sorts out A raceae various taxa in Huating County through the study of the related literatures and field survey. The results show that there are 11genera, 16 species and 1 form of Araceae plants in Huating County, and the total number of genera and species account for 31.43%、8.29%in China, basically including all of the genus except Colocasia which distributed in Gansu Province, and it is 48.57%of the total number of species in the Gansu province. A genus of most species distribution is Arisaema, consisted of five species and one form, followed by Philodendron which has two species and the remaining nine genus belong to one kind of the distribution. In addition, the survey also finds three species which are the new records in Huating County. Meanwhile,the key to genus and species of Araceae plants in Huating county are established.