|Text Source:|| Brownell, V.R. 1983. Status Report on Bluehearts, Buchnera americana: An Endangered Species in Canada. COSEWIC. 38 pp.
Brownell, V.R. 1997. Update Status Report on Bluehearts (Buchnera americana). COSEWIC. 11 pp.
|Ontario Map Source:||Argus, G.W., K.M. Pryer, D.J. White, and C.J. Keddy. 1982-87. Atlas of the Rare Vascular Plants of Ontario. 4 parts. National Museum of Natural Sciences, Ottawa, Ontario. Looseleaf.|
|North American Map Source:||See text source.|
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