201 



H. orhiculata Torr., is also a northern species, being reported only from Noble, 

 where it is very rare and grows in rich woods. A specimen from this county was 

 examined. 



//. filiariit'R. Br., is reported from St. Joseph by Dr. Barnes, from Noble by 

 W. B. Van Gorder and from Steuben by E. Bradner. 



H. leucophmi Gray, is reported from Noble by W. B. Van Gorder, from Steu- 

 ben by E. Bradner and from White by J. Hussey. 



H. lucera E. Br., is reported from Noble, where it grows in tamarack marshes. 



H. psycodes Gray, is limited to the eastern half of the State, being reported 

 from Jay, Delaware and Randolph by Dr. Phinuey; Clark by Baird and Taylor; 

 Jefferson by Dr. J. M. Coulter ; Noble by W. B. Van Gorder and Steuben by E. 

 Bradner. 



H. limbriata R. Br., has been reported only from Clark by Messrs. Baird and 

 Taylor. 



H. peramirnn Gray, is a southern and western species. A specimen from Jef- 

 ferson was the only one studied. 



Cypripedium is represented by five species. 



C. candidum Muhl, has been reported from Steuben by E. Bradner, and also 

 from Gibson and Posey by Dr. Schneck, who states that it was at one time verv 

 common in that locality, but is rapidly disappearing. 



C. paiiiflonim Salisb., is reported from Lake and Noble in the north ; Dearborn 

 in the southeast; Gibson and Posey in the southwest. In Noble it is rare and 

 grows in birch marshes. It was at one time common in Gibson and Posev, but is 

 becoming rare. 



C. pubescens Willd., grows in northern and central counties. It was, at one 

 time, common in Franklin, but is becoming rare. Mr. Van Gorder states that it 

 is very common in dry woods in Noble 



C. spedabile Salisb., is another extreme northern species. It is found in 

 Noble growing in moist, shady places of tamarack swamps and bogs. It is re- 

 ported also from Steuben by E. Bradner. 



C. acaule Ait., has been collected in Noble by W. B. Xnn Gorder whose speci- 

 men was examined. It is also reported from Lake. 



Out of the thirty-.seven species named in this pajter twenty-seven have been 

 verified by herbarium specimens. Most of the others doubtless occur in the State, 

 as they have been reported by good authorities. 



From these facts we find that the following species are found only in the 

 region north of an imaginary line drawn east and west through Indianapolis : 



