Etymology: Aster: from the Greek aster, "a star," describing the radiate heads of the flowers
Plants: erect, perennial, 1/2' - 4' tall forb with long, creeping rhizomes
Leaves: mostly along the stem, stalkess and usually clasping, long and narrow, lance-like, 7 to 9 times as long as wide
Flowers: head 3/8"-1" wide with 20-50 blue rays; inflorescence of a few to several heads in open, leafy clusters
Habitat: moist
Conservation Status: Special Concern

Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 9 WIS DNR-Bureau of Endangered Resources: Detailed information on Wisconsin listed species including state and federal status, photos, etc. USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Vascular Plants: Photos, descriptions, information