PLATE X. 



Onagra cruciata. 



i, leaf from young rosette ; 2, leaf from lower part of mature rosette ; 3, leaf from upper part of 

 mature rosette; 4, stem-leaf; 5, rosette five months old; 6, rosette two months old ; 7, rosette 

 nearly five months old, with narrower leaves, i to 4, half natural size; 5 to 7, natural size. 



