United States, Colorado, Boulder, Area: South Boulder Foothills; Near south boulder creek.
39.9559757 -105.2398654 +-500m. WGS84
T1S R70W sec 21 NW¼ of NW¼
I placed point at given locality and decreased cv to 3 due to accuracy of description TF
1670 meters
5480 ft.
Intermittent ditch, currently muddy.
Cirsium arvense, Symphoricarpus occidentalis, Onosmodium molle, and mixed grasses.
Yellow flrs., tall leafy stems.
Flower
Common Name: Common Evening Primrose; Note that Weber 1996 has O. villosa as sole taxon, but earlier lists, including Weber & Wittmann and Hogan 1993, have O. villosa subsp. strigosa.