Etymology: Aster: from the Greek aster, "a star," describing the radiate heads of the flowers
Plants: erect, perennial, 2' - 8' tall forb, stems often with fine lines of hairs; forming colonies from long, creeping rhizomes
Leaves: crowded, light green, often shiny, mostly entire, stalkless, slightly clasping, lance-like to oblong
Flowers: head 3/4""-1 1/2" wide with 30-60 pale blue to white rays; inflorescence dense, branched clusters with many leaves; blooms Aug.-Oct.
Fruits: dry, smooth seed
Habitat: moist; swamps, fens
Conservation Status: Native
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 6, Wetland Indicator = FACW+ 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 University of Wisconsin - Green Bay: Vascular Plants: Photos, descriptions, information USGS - Northern Prairie Wildlife Research Center: Wetland Plants and Plant Communities of Minnesota and Wisconsin