SUNY COLL FREDONIA,DEPT BIOL,FREDONIA,NY 14063;SUNY COLL FREDONIA,DEPT CHEM,FREDONIA,NY 14063Springer-VerlagOecologiaLanza, J., G. C. Smith, S. Sack, and A. Cash. 1995 . Variation in nectar volume and composition of Impatiens capensis at the individual, plant and population levels. ...