1. Observations on the Sagittaria subulata complex;Adams;Rhodora,1961
2. North American species of Myriophyllum (Haloragaceae);Aiken,1979
3. The biology of Canadian weeds. 34. Myriophyllum spicatum L.;Aiken;Can. J. Plant Sci.,1979
4. An Alisma hybrid;Allen,1964
5. Potamogetonaceae;Ascherson,1907