Willowleaf aster (Symphyotrichum praealtum) COSEWIC status assessment and status report chapter 15
Biographical Summary of Authors
- Zhang, Jay J.
Knowledgeable about the classification of asters and goldenrods of Ontario. - Semple, John C.
Dr. Semple is an expert on evolution and classification of members of the Tribe Astereae of Asteraceae particularly asters, goldenasters, and goldenrods. - Stephenson, David E.
Field biologist; knowledgeable about Ontario flora.