PLATE XII. 



7a 



8 



9 



Onagra lamarckiana X Onagra cruciata (No. 3.21). 



1, leaf from young rosette; 2, leaf from median portion of mature rosette ; 3, leaf from upper portio 

 of mature rosette; 4, stem-leaf; 5, bract; 6, flower with petals removed (see 6a); 7, flowe 

 with petals removed (see 7a); 8, petals of mininum size ; 9, unopened tlower-bud ; 10, capsule 

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



