@article {7386, title = {Remarques sur deux Bidens (Compos{\'e}es) d{\textquoteright}origine am{\'e}ricaine: B. frondosa L. et B. connata M{\"u}hl}, journal = {Bull. Soc. Sci. Bretagne}, volume = {30}, year = {1956}, month = {1956///}, pages = {49 - 57}, author = {J. Nehon} } @article {7387, title = {Une adventice nouvelle pour le Nord-Ouest de la France: Bidens vulgata Greene (Compos{\'e}es)}, journal = {Bull. Soc. Sci. Bretagne}, volume = {40}, year = {1966}, month = {1966///}, pages = {141 - 143}, author = {R. Corillion} } @article {7388, title = {Sur l{\textquoteright}extension r{\'e}cente et les caract{\`e}res des v{\'e}g{\'e}tations {\`a} Cotula coronopifolia L. (Compos{\'e}es) des rives du Trieux}, journal = {Bull. Soc. Sci. Bretagne}, volume = {31}, year = {1958}, month = {1958///}, pages = {102 - 106}, author = {R. Corillion and C. Lollierou} }