Etymology: Senna: from the Arabic name Sana
Plants: erect, perennial forb 40"-80" tall
Leaves: pinnately-divided into usually 4-8 pairs of leaflets
Flowers: yellow, 5-parted, 3/4"-1 1/4" wide, petals slightly unequal, buds nodding; inflorescence several clusters (racemes) from the leaf axils
Fruits: pod with seeds about 2 times as wide as long; seeds plump, almost 2 times as long as wide
Habitat: moist; open woods, streambanks
Conservation Status: Special Concern
Floristic Rating: Coefficient of Conservatism = 10, Wetland Indicator = FACW WIS DNR-Bureau of Endangered Resources: Detailed information on Wisconsin listed species including state and federal status, photos, etc. Atlas of the Wisconsin Prairie and Savanna Flora: by T.S. Cochrane & H.H. Iltis: habitat, distribution infomation / flowering and fruiting times USDA Plants Database: Federal Distribution and detailed information including photos USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"