Localities, pond management personnel and the general public are asked to look for a new species of Water Chestnut (genus Trapa) (http://mdinvasives.org/iotm/june-2018/) recently found in the Potomac Watershed. Its name is Trapa bispinosa Roxb. var. iinumai Nakano. It has been spreading since 1995 so you may have already encountered this floating aquatic vegetation growing over the surface of a […]