Coefficient of Conservatism:
Coefficient of Wetness:
G. E. Crow
Usually in shallow water: lakes, ponds, wet swales, and rarely quiet river borders.
The submersed leaves are often curved, giving the whole bushy plant the aspect of a broad-leaved Najas. The cellular-reticulate border of the midrib may occupy most of the area of the leaf. The few-flowered nearly spherical spikes are sessile or nearly so in the axils of submersed leaves, with the inflorescences in axils of floating leaves, when developed, being lonfger and borne above the water surface.