United States, Colorado, Boulder, OSProperty: Gebhard; On north border of property along irrigation ditch east of East Boulder Recreation Ctr, and west of S. Boulder Creek.
T1S R70W sec 3 NW¼ of SW¼, Louisville Quad
1615 meters
5300 ft.
In flowing ditch of irrigated pasture in floodplain.
Cirsium, Spartina pectinata, Oenothera, and Impatiens capensis.