Fox: SPECIES OF CYPRIPEDIUM. 447 



A more reasonable argument would be that the leaves are 

 large because its favorite localities are shady and usually well 

 supplied with moisture. 



Some of the American species of Cypripedium are used for 

 forcing but C. acaule Ait.^24 jg found to be a difficult plant to 

 handle although its habitat^^s j^as been well studied. 



Herb: Sheldon, Lake Calhoun; Taylor, Glenwood; Sandberg, 

 Hennepin Co , Alton, Hennepin Co., Taylor, Chisago Co., Oest- 

 lund, Detroit, Sheldon, Aitkin Co.. Sandberg, Center City. 



The folJowiug gentlemen, Professor Conway MacMillau, Mr, 

 E. P. Sheldon, Mr. John S. Wright, Mr. V. K. Chestnut and 

 Mr. O. W. Oestlund, have kindly assisted me in the work on 

 this article and I wish to extend to them my sincere thanks 



(124) Meehan, T. U. S. Fl. and Ferns. 2: 3:64. 1880. 



(125) Watson. W. Orchids, Cult, and Manage. 518. 1890. 



