PLATE VII. 



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1 



Onagra argillicola. 



i, 2, leaves of young rosette ; 3, leaf from adult rosette ; 4, stem-leaf ; 5, flower with petals removed ; 

 6, bract; 7, flower-bud; 8, flower-bud immediately previous to opening, with stigma exposed; 

 9, petal ; 10, capsule. 1 to 4, one-half natural size ; 5 to 10, natural size. 



