Chenopodium glaucum L. var. salinum (Standl.) Boivin
[= Oxybasis glauca ssp. salina]

Washington: King: Delta of Taylor Creek at the Lake Washington shoreline, City of Seattle.
47.511918° N, 122.246681° W,
Common below the ordinary high water mark of Lake Washington in moist sand and cobble. Usually growing without much other plant competition in full sun. Associated taxa: Bidens sp. (opposite compound leaves); Rumex obtusiloba; Scirpus microcarpus; Mentha piperita, Plantago major, Chenopodium album, Juncus effusus, Portulaca sp., Polygonum persicaria. King County tax parcels 8073000525 and 8073000535. The lake level of Lake Washington is managed by the U.S. Corps of Engineers and is the reverse of what would occur naturally. Lake elevation is lowered in the winter and elevated in the summer. Mostly in areas without other vegetation. Annual, many distinctly prostrate and spreading; others more erect. Underside of leaves distinctly farinose. Https://intermountainbiota.org/portal/collections/individual/index.php?occid=30928307.

Clayton Antieau s.n., 2015-8-6
WS, Catalog: 390769