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Western Meadow-rue, Western Meadowrue, Meadow Rue - Thalictrum occidentale

Family: Ranunculaceae - Buttercup family Genus Common Name: Meadow-rue Native Status: NativeDicot Perennial Herb
Thalictrum occidentale - Western Meadow-rue, Western Meadowrue, Meadow Rue. Thalictrum occidentale is a western species of Meadow Rue, and is found at elevations up to about 10,000 feet.

There is much disagreement over the classification of the species within the Thalictrum genus, as well as difficulty differentiating between some of the species. The plant represented here might be Thalictrum venulosum rather than Thalictrum occidentale - it is difficult to tell without inspecting the seed pods. Some authorities consider Thalictrum confine to be a variety of Thalictrum venulosum, while most currently classify them as separate species.

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Thalictrum occidentale

Distribution of Thalictrum occidentale in the United States and Canada:
USDA Plants Distribution Map temporarily unavailable.
Blue=Native; Grey=Introduced

Map from USDA Plants Database:
USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 21 Feb 2018). National Plant Data Team, Greensboro, NC 27401-4901 USA.

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Site: Adams County, ID Date: 2011-June-18Photographer: Gerald C. Williamson
Nikon D7000
Thalictrum occidentale is dioecious the male (staminate) and female (pistillate) blossoms are on separate plants. This photo of of the male flowers, with the stamens hanging down on thin, purplish or greenish-white filaments.
Thalictrum occidentale

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2018
Photographs Copyright owned by the named photographer