@article {8279, title = {First record of Echinochloa stagnina (Poaceae) for Puerto Rico and key to the Echinochloa in the West Indies}, journal = {Sida}, volume = {15}, year = {1993}, month = {1993///}, pages = {527 - 532}, author = {P.M. McKenzie and P.W. Michael and L.E. Urbatsch and R.E. Noble and G.R. Proctor} }