Title: Biblio RTF Export
Author: Biblio 7.x

Muenscher, W. C. Aquatic plants of the United States 72-78 (Comstock Publishing Company, 1944).

Jones, M. E. Contributions to Western Botany, No. 7. Proc. Cal. Acad. Sci. (Ser. 2) 5, 611-732 (1895).

Gray, A. A Manual of the Botany of the Northern United States, from New England to Wisconsin and South to Ohio and Pennsylvania inclusive 458-459 (James Munroe and Company, 1848).