[Pondweeds: The Genus Potamogeton East of the Cascade Mountains of Oregon and Washington]

Fern Pondweed, Robbins' Pondweed

Potamogeton robbinsii

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.

Fern Pondweed, Robbins' Pondweed: Potamogeton robbinsii - Fern Pondweed, Robbins' Pondweed: Potamogeton robbinsii - 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.

Paul Slichter