IOWA ACADEMY OF SCIENCES. 191 



illustrates the difficulty of trying to make distinctions upon 

 supp®sed differences. 



Professor Hitchcock, in Trans. St. Louis Acad, of Science, 

 Vol. 5, p. 519, says, "C^. parvifiorum Salisb. has been reported, 

 but I doubt if it occurs. " The locality he refers to is Ames, 

 Story county. 



We have now clearly shown the confusion into which bot- 

 anists have fallen in trying to make two species out of forms 

 having no well defined limit between them. The only way out 

 of the difficulty is to recognize but one species. As C. Jiirsutum 

 Mill, is the older it should stand, C. parvifiorum Salisb. must 

 fall. 



Bui. Lab. Nat. Hist., Vol. 3, p. 212; Proc. Iowa Acad, of 

 Sciences, Vol. 5, p. 165; Vol. 6, p. 197; Nagel and Haupt in 

 Proc. Dav. Acad, of Sciences, Vol. 2; Trans. St. Louis Acad, 

 of Science, Vol. 5, p. 519. 



Gypripedium candidum Willd. (1805.) A pretty little species, 

 six to twelve inches high, with elliptic or lanceolate leaves, and 

 solitary flowers. The lip is white, purple inside. This species 

 is found in bogs and low prairies, from May to July, and seems 

 formerly to have been quite frequent but is now rarely found. 

 Our rapid development has no doubt changed conditions so radi- 

 cally that the species is unable to adapt itself to its new enr 

 vironment and must soon perish. 



The specimens examined were collected in Emmet, Payette, 

 Muscatine, and Page counties It has been reported from Scott 

 (Nagel and Haupt), Benton and Johnson (Shimek), Story 

 (Hitchcock), and Hamilton (Pammel) counties. Dr. E. M. Rey- 

 nolds informs us that it was formerly frequent in Appanoose 

 county, but none were collected and the species is probably 

 extinct. 



Bui. Nat. Hist. S. U. I., Vol. 3, p. 212; Proc. Iowa Acad, of 

 Sciences, Vol. 4, p. 103; Vol. 5, p. 165; Vol. 6, p. 197; Nagel 

 and Haupt in Proc. Daven. Acad, of Sciences, Vol. 2; Plant 

 World, Vol. 2, p. 45; St Louis Acad, of Science, Vol. 5, p. 519. 



Gypripedium reginae Walt. (1788). This species is the crown- 

 ing glory of the Cypripediums and like most beautiful objects it 

 is rare and approaching extinction. When the state was in its 

 primeval condition this species is said to have been common, 

 but now it is rarely observed. Our specimens are from Winne- 

 shiek, Johnson, and Jasper counties; the S. U. I. herbarium has 

 specimens collected from Winnebago (Shimek) and Muscatine 

 (Reppert) counties. It has been reported from Fayette (Fink) 



