Grasses of the Guianas 1991. E.J. Judziewicz. Family 187. Poaceae. 1991 [as 1990]. In A.R.A. Görts?van Rijn, ed., Flora of the Guianas, Series A: Phanerogams. Koeltz Scientific Publications, Königstein, Germany. 727 pp. [Illustrated treatment of the 400 species of grasses occurring in these three South American countries]
Sample page with illustrated keys:
Wildflowers of Wisconsin and the Upper Midwest
