河南桔梗科一新记录种:卵叶异檐花

Triodanis perfoliata subsp. biflora:a newly recorded genus of Campanulaceae from Henan

报道了卵叶异檐花(Triodanis perfoliata subsp.biflora(Ruiz&Pav.)Lammers)在河南省的新分布。该亚种采集于河南省南部的新县和光山县,原产于美洲,后来入侵安徽、浙江、福建、江西、湖北等长江以南地区。通过查阅馆藏标本和出版文献,认为带土移栽是其入侵的可能途径。本研究对该亚种的形态特征和生存环境进行了详细地描述,并更新了河南桔梗科属检索表。凭证标本现保存于河南农业大学植物标本馆(HEAC)。

Triodanis perfoliata subsp. biflora was reported as a new record in Henan province. This genus belongs to Campanulaceae,collected from Xinxian and Guangshan counties in south Henan province. It originated in America,and then spread rapidly throughout the south of the Yangtze River in Anhui,Fujian,Jiangxi and Hubei,China. According to the relevant information,we regarded transplanting with soil as a major vector for the introduction of Triodanis perfoliata subsp. biflora. The characteristics and habitat of this species were described. Additionally,we provided identification keys to the genera of Campanulaceae occurring in Henan province. Its voucher specimens are now deposited in Herbarium of Henan Agricultural University(HEAC).