120 BOTANICAL GAZETTE [FEBRUARY 
ate ann esis oe tr ax A 
Fic. 16.—Mutations from the . Pree of —- F, Oenothera pratincola; 
the plants are F-1, mut. nummularia; F-2, -4, -3, -6, mut. rubricentra; F-3, mut. 
tortuosa (?), taking the plants in at from the upper left. hand corner. 
