Limnobium laevigatum (Humb. & Bonpl. ex Willd.) Heine

Washington: Pacific County: Canal N of Cranberry Road, 0.45 air km W of Clam Lake. Elev. 4 m.
46.395° N, 124.046° W
Coordinate Source: Specimen Label.
Naturalized, full sun, with Azolla filiculoides, Spirodela polyrhiza, Lemna turionifera, L. minuta, Hydrocotyle ranunculoides, Ludwigia palustris. Common floating aquatic, leaves to 9 mm thick, where rooted in shallow water, recurved pedicels bear oblanceoloid pale gray fruits with echinate seeds.

Peter F. Zika 29843, Oct 22, 2019
WTU, Accession: 423002, Barcode: WTU-V-059590

Limnobium laevigatum (Humb. & Bonpl. ex Willd.) Heine

Washington: Pacific County: 11N-11W-33. East Main Drainage Ditch. Covering most of open water in ditch just south of Cranberry Rd.
46.395° N, 124.0464° W
Coordinate Source: Specimen Label.
Tissue removed by Dorothy Chase at the University of Washington for DNA analysis, December 2019. Phenology: Flowers.

Jenifer Parsons s.n., Aug 29, 2018
With Bacon
WTU, Accession: 419663, Barcode: WTU-V-042995

Limnobium laevigatum (Humb. & Bonpl. ex Willd.) Heine

Washington: Pacific County: N shore of slough, near cranberry farms, S side of Cranberry Road, 0.5 km W of Clam Lake, Long Beach. Elev. 8 m.
46.395° N, 124.046° W
Coordinate Source: Specimen Label.
Full sun to partial shade of shoreline thickets, with Spirodela polyrhiza, Lemna turionifera, Nuphar, Hydrocotyle, Hydrocotyle ranunculoides. Stoloniferous floating aquatic, leaves spongy, up to 7 mm thick. ¶Tissue removed by Dorothy Chase at the University of Washington for DNA analysis, December 2019.

Peter F. Zika 28281, Aug 14, 2016
WTU, Accession: 412560, Barcode: WTU-V-027097