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Potamogeton heterophyllus (16-17); Potamogeton perfoliatus (18-19). 1915. Potamogeton.

Image of pondweed

Description:

Potamogeton heterophyllus (16-17); Potamogeton perfoliatus (18-19). 16, aquarium specimen; 17, aquarium specimen; 18, winter shoot showing elongation of internodes; 19, growing tips of same

Source Information

license
cc-publicdomain
publisher
Freshwater and Marine Image Bank, University of Washington Libraries Digital Collections
provider
Freshwater and Marine Image Bank