W. Steinmann, Victor, Instituto de Ecología, A.C., Centro Regional del Bajío
Wendt, Thomas L., Colegio de Postgraduados, Centro de Estadistica y Cálculo
Wendt, Tom, University of Texas at Austin
Wendt, Tom, Plant Resources Center, University of Texas (United States)
Wiersema, John H., Systematic Botany and Mycology Laboratory, United States Department of Agriculture
Williams Linera, Guadalupe, Instituto de Ecología, A.C.
Windham, Mike, Utah Museum of Natural History, University of Utah
, El Colegio de la Frontera Sur (ECOSUR)
Woolrich-Arrioja, Alejandra
, Clemson University, Dept. of Biological Sciences