中国蔊菜属新记录—两栖蔊菜

A Newly Recorded Species Rorippa amphibia (L.) Besser from China

摘要:

两栖蔊菜(Rorippa amphibia (L.) Besser)原产欧洲，高加索地区、中亚、北非、北美、新西兰也有报道，但中国未见报道。2006年6月初，在旅顺南路七贤岭路段绿化带附近首次发现该种；2007年5月，在甘井子区一居民小区的草坪上又发现该种。两地相距较远，约12 km，但生境均为人工草坪。该种是以草坪为分布中心，先是占领草坪草的生态位，然后逐步向周围扩大分布区，形成近于单一的两栖蔊菜小群落。该种出现于大连与草坪引种有关。对该种的潜在危害进行了分析，并对其分类学特征进行描述。凭证标本保存在大连自然博物馆(DNHM)。

Abstract:

Rorippa amphibia (L.) Besser originates in most part of the Europe. It was also distributed in Caucasia, Middle Asia, North Africa and North America, even in New Zealand. Recently it was found in Dalian, Northeast China, mainly distribute in lawn of the city. The species was mainly exported from Canada and United States, so it is easily inferred that Rorippa amphibia (L.) Besser was incidental from that area. In addition, the taxonomic characters and latentmenace of the species were introduced. Voucher specimens are preserved in Dalian Natural Musem (DNHM).