Symphyotrichum pilosum (Willd.) G.L. Nesom var. pilosum

Washington: Grant County: E shore of Columbia River, free-flowing; N side of mouth of Lower Crab Creek; 0.5 mi. SE of Schwana. Elev. 492 ft.
46° 49' N, 119° 55.4' W; T15N R23E S3
Full sun or partial shade. With Salix exigua, Phalaris, Equisetum, Ambrosia, Aster occidentalis, Gaillardia aristata, Coreopsis atkinsoniana. White rays, yellow disk; cespitose, not secund; phyllaries and bracts subulate-spinose; common on cobble shore. Reference specimen for illustration in Revision of "Flora of the Pacific Northwest." WTU Herbarium, 2017. Phenology: Flowers & Fruits.

P. F. Zika 18070, Oct 7, 2002
WTU, Accession: 350442, Barcode: WTU-V-032598