Lysimachia vulgaris L.
Annotated by Ben Legler, Aug 2016.

Washington: King County: Mouth of Tibbetts Creek, at south end of Lake Sammamish. Elev. 10 m.
47.556719° N, 122.073731° W
Datum: WGS 84. Uncertainty: 4 meters. Coordinate Source: GPS.
Small, sandy creek delta with low cover of Cyperus bipartitus, Eleocharis acicularis, Juncus bufonius, backed by thickets of Phalaris arundinacea and Cornus stolonifera. Flowers bright yellow; stems 0.7-1.5 meters tall, scattered among vegetation near shoreline, producing vigorous rhizomatous offshoots to over 2 meters long, these sometimes with tuberous winter buds at tip. Phenology: Flowers.

Ben Legler 14329, Aug 24, 2016
With Peter F. Zika
WTU, Accession: 418934, Barcode: WTU-V-041989