Thalictrum dasycarpum Fisch. & Avé-Lall. - Purple Meadow Rue


|  back  | forward |

Thalictrum dasycarpum - (image 1 of 6)



Family: Ranunculaceae


Moist, often calcareous meadows. Prairie remnants.




Southwest Ontario west to Alberta and WA, south to OH, IN, MO, OK, and AZ.


Herbaceous perennial 1-2 m tall. Stems glabrous, purplish. Cauline leaves sessile, glabrous above and usually puberulent beneath; leaflets mostly 3-lobed, mostly over 15 mm. Flowers all or mostly unisexual, in a more or less pyramidal and pointed inflorescence; sepals petaloid, 3-5 mm, more or less lanceolate and acute; filaments white, slightly or scarcely dilated above; anthers linear, 1.5-3.5 mm, sharply apiculate; stigmas more or less straight, 2-4.5 mm. Achenes 4-6 mm, sessile or subsessile, obtuse at the base, in more or less hemispherical heads. 


Flowers late May to late June

Wetland indicator: Facultative Wetland -

Plants in this genus lack petals and the sepals are usually small and soon deciduous, so the color of the flower is derived mostly from the stamens.


Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.

The New York Botanical Garden. Bronx, NY


Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.




 Michael Hough © 2005