Bidens amplissima (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Bidens amplissima" in English language version.

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ou.edu

Ganders, F. R., Klinkenberg, R., & Klinkenberg, B. (2002). British Columbia loses an endemic species: Bidens amplissima (Asteraceae) also occurs in Washington state. Botanical Electronic News (BEN) No. 293. http://www.ou.edu/cas/botany-micro/ben/ben293.html