| Author: | Catling, P.M., K.W. Spicer, and L.P. Lefkovitch |
| Article Title: | Effects of the introduced floating vascular aquatic, Hydrocharis morsus-ranae (Hydrocharitaceae), on some North American aquatic macrophytes. |
| Keywords: | Hydrocharis morsus-ranae, common frogbit, North America |