tropical horseweed

Erigeron sumatrensis

Summary 2

Conyza sumatrensis is an annual herb probably native to South America, but widely naturalised in tropical and subtropical regions, and regarded as an invasive weed in many places. In the British Isles it is known as Guernsey fleabane. Other common names include fleabane, tall fleabane, broad-leaved fleabane, white horseweed, and Sumatran fleabane.

Sources and Credits

  1. (c) Bruce Calvert, some rights reserved (CC BY), uploaded by Bruce Calvert
  2. (c) Wikipedia, some rights reserved (CC BY-SA),

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