Stem cross section in Conyza canadensis (Canadian horseweed). Lersten and Curtis. 1987. La Cellule. 74: 179-196.
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| Curtis, Lersten, and Nowak 2002 rev. 2015 | |||||
Stem cross section in Conyza canadensis (Canadian horseweed). Lersten and Curtis. 1987. La Cellule. 74: 179-196. |
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