Thalictrum pubescens - (image 1 of 6)
Taxonomy
Family: Ranunculaceae
Habitat
Rich woods, wet meadows, stream banks.
Associates
Distribution
Labrador and Quebec west to Ontario, south to southern NC, TN, and IN.
Morphology
Herbaceous perennial from a short crown, to 1-3 m. Cauline leaves sessile, glabrous above and usually minutely puberulent beneath; leaflets mostly 3-lobed, mostly over 15 mm. Flowers all or mostly unisexual, in a more or less pyramidal inflorescence; sepals 2-3.5 mm, more or less elliptic and rounded; filaments white, dilated above, often wider than the anther, constricted at the tip; anthers narrowly obovoid, blunt, 0.8-1.5 mm; stigmas spirally-curved, 0.5-2 mm. Achenes 3-5 mm, a third to half as wide, somewhat glandular, dark when dry, in more or less subglose heads.
Notes
Flowers June to August
Wetland indicator: Facultative Wetland +
Looks very much like T. dasycarpum.
References
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.
USDA, NRCS. 2002. The PLANTS Database, Version 3.5 (http://plants.usda.gov).
National Plant Data Center, Baton Rouge, LA 70874-4490 USA.
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Michael Hough © 2009 |