Title: Contribution to the history of the fresh-water Algæ of North America /
Authors: Wood, H. C. 1841-1920.
Year: 1873
Subjects: Freshwater algae North America.
Contents: Class Phycochromophyceae. Order Cystiphorae ; Order Namatogeneae -- Class Chlorophyllaceae. Order Zygophyceae ; Order Siphophyceae -- Class Rhodophyceae -- Supplement -- Geographical list of species.