590 Mutations 



from the Adirondacks. Through the kindness 

 of Dr. MacDougal, of the New York Botanical 

 Garden, I received seeds from Sandy Hill near 

 Lake George. When the plants, grown from 

 these seeds, flowered, they were not a uniform 

 lot, but exhibited two distinct types. Some had 

 linear petals and thin flower-buds, and in 

 others the petals were a little broader and the 

 buds more swollen. The difference was small, 

 but constant on all the flowers, each single plant 

 clearly belonging to one or the other of the two 

 types. Probably two elementary species were 

 intermixed here, but whether one is the sys- 

 tematic type and the other a mutation, remains 

 to be seen. 



Nor seem these two types to exhaust the range 

 of variability of Oenothera cruciata. Dr. B. L. 

 Robinson of Cambridge, Mass., had the kind- 

 ness to send me seeds from another locality in 

 the same region. The seeds were collected in 

 New Hampshire and in my garden produced a 

 true and constant cruciata, but with quite differ- 

 ent secondary characters from both the afore- 

 said varieties. The stems and flower-spikes and 

 even the whole foliage were much more slender, 

 and the calyx-tubes of the flowers were notice- 

 ably more elongated. It seems not improbable 

 that Oenothera cruciata includes a group of 

 lesser unities, and may prove to comprise a 



