Fern Pondweed, Robbins' Pondweed
Potamogeton robbinsii
Fern pondweed growing in shallow water and onto the bank with twoheaded water-starwort (Callitriche heterophylla) in a stream passing through Summit Prairie, Malheur National Forest........August 20, 2011.
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Fern pondweed growing in shallow water and onto the bank with twoheaded water-starwort (Callitriche heterophylla) in a stream passing through Summit Prairie, Malheur National Forest........August 20, 2011.
Paul Slichter