假刺苋——中国大陆一新归化种

Amaranthus dubius Mart. ex Thell.——A Newly Naturalized Plant of Mainland of China

摘要:

报道了广东省潮州市韩江沿岸发现的中国大陆一新归化种——假刺苋(Amaranthus dubius Mart. ex Thell.).该种原产热带美洲及西印度群岛,已经引入并局部归化于欧洲、热带亚洲地区和非洲,在中国台湾已经归化.通过野外调查,获得该种的详细特征与生境等信息,并讨论了与其他苋属植物的区别及其潜在的入侵性.此外,还提供了用于检索中国苋属植物的分类检索表.

Abstract:

Amaranthus dubius Mart. ex Thell., native to tropical America and the West Indies, introduced and naturalized in Europe, tropical Asia and Africa as well as in Taiwan, has been found in mainland of China. The population of A. dubius has been discovered along the bank of Hanjiang River of Chaozhou, Guangdong Province, China. The biological characters and the potential invasive were discussed, and a taxonomic key for Chinese Amaranthus is provided.