Sonchus arvensis ssp. uliginosus
Photographer: Don Knoke
Date Photographed: 17 Aug 2005
Locality: Kittitas County: Thorp Ice Pond, near North Thorp Highway, Thorp.
Elevation: [not provided]
Coordinates: [not provided]
Comments: Common over a fairly large area at the location where found; I haven't seen it elsewhere in the county.
Voucher Specimen: Don Knoke 976, WTU Herbarium