442 



BOTANICAL GAZETTE 



[DECEMBER 



The type of heredit}' here exempKhed is shown b}' several muta- 

 tions from 0. Lamarckiaiia. 0. lata DeVries provides the classic 

 case. The heredity of 0. sciutillaus DeA'ries and O. oblonga 



Fig. 8. — !Mut. revolula: 4 rosettes of the F2 progeny of f. lypica, from Fi parent 

 Lexington E-5; the upper right-hand plant, Lexington E-5-172, \nll be found in fig. 5; 

 the two lower plants, nos. E-5-202 and 203, ^^^ll be found in tig. 4. 



