Underwater and floating-leaved plants of the United States and Canada

How to know the aquatic plants

G. W. Prescott

Chrysophyte blooms in the plankton and neuston of marine and freshwater systems

Ontario. Water Resources Branch.

The identification of common water weeds

Richard John Chancellor

Common marsh, underwater, and floating-leaved plants of the United States and Canada

Neil Hotchkiss

Wetland and riparian plants in Great Britain

Margaret Palmer

Rivers and Ponds (Tracker Nature Guide S.)

Paul Sterry

A manual of aquatic plants

Fassett, Norman Carter