Doellingeria umbellata
Doellingeria umbellata, known by the common names tall flat-topped white aster, parasol whitetop, or tall white-aster, is a North American plant species in the aster family. It is native to Canada, St. Pierre and Miquelon, and the eastern and north-central United States tall, spreading by means of underground rhizomes. It can sometimes produce as many as 300 small flower heads, each with as many as 16 white ray florets and 50 yellow disc florets.
;Varieties
This perennial grows in full sun or part-shade and moist or draining wet soils that are best slightly acid in reaction, but adapts to moderately acid or slightly alkaline reaction.
- Doellingeria umbellata var. pubens Britton - Alberta, Manitoba, Ontario, Québec, Saskatchewan, Illinois, Iowa, Michigan, Minnesota, Nebraska, North Dakota, Wisconsin
- Doellingeria umbellata var. umbellata - St. Pierre and Miquelon, Newfoundland, New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Québec, Alabama, Connecticut, Delaware, Georgia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, West Virginia, Wisconsin
