Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

Please direct any comments to

Thank you.

  Aster ontarionis Wiegand image
Photographer: Hugh H. Iltis           

Hugh H. Iltis

Hugh H. Iltis

Josh Sulman

Josh Sulman
Family Asteraceae
Aster ontarionis Wiegand
bottomland aster, Ontario aster
Aster: from the Greek aster, "a star," describing the radiate heads of the flowers
ontarionis: of Ontario, Canada
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, perennial, 1'-4' tall forb; stems evenly covered with fine, curly hairs mostly toward the top; long, creeping rhizomes
Flower: head 1/3"-3/8" wide with 9-14 white rays; inflorescence of many heads along spreading branches; blooms Aug.-Oct.
Leaf:lance-like, lower surface evenly hairy, basal leaves stalked, upper leaves mostly stalkless leaf drawing
Habitat: moist; meadows, marshes, shores
Notes: very similar to A. lateriflorus but with long, creeping rhizomes and hairy lower leaf surfaces

More Information Natural Communities Herbarium Specimens
All Aster list Google- Images or Text

Flora of North America (off site)
Aster diffusus Aiton var. thyrsoides A.Gray
Aster lateriflorus (L.) Britton var. thyrsoides (A.Gray) E.Sheld.
Aster missouriensis Britton, non Kuntze
Aster missouriensis Britton var. thyrsoides (A.Gray) Wiegand
Aster pantotrichus S.F.Blake
Aster pantotrichus S.F.Blake var. thyrsoides (A.Gray) S.F.Blake
Aster tradescantii L. var. thyrsoides (A.Gray) B.Boivin
Symphyotrichum ontarione (Wiegand) G.L.Nesom

Botany News/Events
Book We Recommend
Historical Botanists
Other Links
Botanical Club of Wisconsin (off site)
UW-Stevens Point Biology Dept.
Plants of Wisconsin
Vascular Plants
Natural Communities
Botany News/Events
Other Links
Lichens (off site)   
Tom Volk's Fungi (off site)
Taxonomy of Vascular Plants
                          Vascular Plants
Browse by Identification Guides
Family Wildflowers
Genus Trees
Common Names Shrubs
Search by Vines
Names Aquatic-Semi aquatic
Specimens Ferns - Fern Allies
Blooming Times Grasses, Sedges, or Rushes
County & Status Other Resources  
Town Range Taxonomy of Vascular Plants
  WI Checklist & CofC Values
Browse by:
Common Name
Search by:
Copyright 2012 Permissions Contact Us Web Map