Abstract: Amaranthus polygonoides L., originated in the Caribbean island, American, Mexico etc, is a new alien plant found in Zhejiang. The article preliminarily introduced the biological and ecological characteristics, world distribution, its spread of the domestic, to provide basic data for preventing its spreading.

Key words: Amaranthus polygonoides, invasive alien plant, exotic weed, Zhejiang

摘要： 合被苋Amaranthus polygonoides L.原产加勒比海岛、美国、墨西哥等地，是新近传入浙江的外来植物。本文报道合被苋的植物学和生态学特性，介绍其在国内外分布和国内蔓延情况，为该种的早期控制提供基础资料。

关键词: 合被苋, 入侵植物, 杂草, 浙江