This summer, a weed he first saw and identified in an Iowa cornfield in 2016 – Asian Copperleaf (Acalypha australis) – has been found in the state again. This time, the weed was found in soybeans.

Paul I. Forster, A taxonomic revision of Acalypha L. (Euphorbiaceae) in Australia, Austrobaileya, Vol. 4, No. 2 (1994), pp. 209-226 ...