94 



BOTANICAL GAZETTE 



[febrcary 



was called on this account mut. subulata. There were also 7 plants 

 (nos. 13-16, 19, 20, and 22) which developed very slowly and 

 were retained in the expectation that they might prove to be 

 dwarfs, although there was no character but size to distinguish 



Fig. 6. — Fi progeny of Oenothera pratincola, Lexington C, pan 2; the only muta- 

 tion shown is Lexington C-ii, mut. nummularia; the other plants are typical. 



them from typical sister plants. The solitary plant of mut. 

 suhilata died, but the type has since been found to be one of the 

 most frequent mutations of 0. pratincola. The type represented by 

 nos. 7 and 12 was designated as mut. pusilla. Its rosettes were 

 about 4 cm. in diameter at maturity. The stem leaves were 



