Kickxia elatine (L.) Dumort
Remarks: Approaching K. spuria with somewhat enlarged fruiting sepals and hairy pedicels, however some leaves hastate.

Washington: King County: Near Canal Road NE, 3.5 air kilometers southeast of Green Lake, between the Center for Urban Horticulture and Union Bay, Lake Washington, Seattle. Elev. 5 m.
47.6564° N, 122.2962° W
Coordinate Source: Specimen Label.
On disturbed mesic ground, fill, full sun, with typical forms of K. elatine (common), Cirsium arvense, C. vulgare, Sonchus, Trifolium subterraneum, Populus trichocarpa. Prostrate, flowers pale yellow and purple, leaf base and pedicel hairs variable, uncommon. Phenology: Fertile.

Peter F. Zika 29455, Nov 16, 2018
WTU, Accession: 419530, Barcode: WTU-V-042593