Mauranthemum paludosum (Poir.) Vogt & Oberpr.
Annotated by Ben Legler, Mar 2017.

Washington: San Juan County: Friday Harbor, San Juan Island.
48.53528° N, 123.00528° W,
Datum: WGS 84. Uncertainty: 10000 meters. Coordinate Source: GeoLocate.
Residential area on east side of town; gravel roadside, with Senecio vulgaris. Weedy annuals with white rays, isolated to one small area; keys to Chrysanthemum leucanthemum, but much smaller, annual, and blooming much earlier. Phenology: Flowers.

Scott R. Atkinson 347, Apr 6, 1992
WTU, Accession: 325166, Barcode: WTU-V-032616