Taxonomy
Family: Fabaceae
Habitat
Oak savannas and rich woods.
Associates
Acer saccharum, Agrimonia gryposepala, Amphicarpaea bracteata, Cornus racemosa, Corylus americana, Eupatorium rugosum, Fraxinus americana, Geranium maculata, Juglans nigra, Osmorhiza claytonii, Parthenocissus quinquefolia, Podophyllum peltatum, Polygonatum canaliculatum, Quercus alba, Quercus velutina, Sanicula gregaria, Smilacina racemosa, Solidago ulmifolia, Tilia americana, Vitis riparia.
Distribution
Nova Scotia west to Saskatchewan, south to FL and Mexico.
Morphology
Perennial with solitary stems to 40 cm high. Leaves compound, clustered at end of short stems; leaflets 3, conspicuously acuminate. Inflorescence from the end of leafy stems; flowers small; calyx campanulate, the lobes scarcely developed, less than half as long as the tube. Stipe of fruit more than twice the length of remnant calyx.
Notes
Flowers late June to early September
Wetland indicator: Upland
Sometimes common in disturbed woods, particularly near paths. The seed pods adhere quite readily to clothing. Desmodium nudiflorum (L.) DC. has flowering stems originating at the base of the plant and obtuse to short-acuminate leaflets.
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.
Michael Hough © 2004 |