Thalictrum polycarpum (Torr.) S. Watson

Oregon: Washington County: Tualatin River National Wildlife Refuge, Metro Parks and Greenspaces Morand Unit; along a seldom-used dirt road, between the south bank of the Tualatin River, a wetland restoration pond, and attached open, partially flooded meadow (formerly a drained agricultural field). Elev. 40 m.
45° 23.64' N, 122° 49.36' W
Small wet meadow surrounded by young riparian forest. Herb (perennial, about 80 to 150 cm) with three times compound leaves having small, lobed leaflets, sprouting from a creeping rhizome and having male and female, apetalous flowers on separate plants; female flowers (pistils) and achenes are purple, while male flowers have anthers dangling below covered in yellow pollen; (achens are distinctly hooked, and veined). 1 of 3.

June Mohler 9, May 25, 2007
HPSU, Accession: 13465