Title: The asters of Ontario (Compositae: Astereae) : Diplactis Raf., Oclemena Greene, Doellingeria Nees and Aster L. (including Canadanthus Nesom, Symphyotrichum Nees and Virgulus Raf.) /
Authors: Semple, John C.; Heard, Stephen B.; Xiang, ChunSheng.
Publisher: Dept. of Biology, University of Waterloo,
Year: 1996
Subjects: Asters Ontario Classification.; Asters Ontario Identification.; Asters Ontario Geographical distribution.; Asters Ontario.