194 GEOLOGY OF OHIO. 



478. LISTERA R. Brown. TwaybeadE. 



LiSTERA cordata (L.) R. Brown. 



"Eastern and Northern, O.," J. S. Newberry (Cat.) 



479. GYROSTACHYS Pers. ( Spiranthes Richard) . Ladies' Tresses. 



GyrosTachys CERNUA (L.) Kuntze. {Spiranthes cernua (L.) Richard.) 

 Generally distributed. 



GyrosTachys gracilis (Bigel.) Kuntze. ( Spiranthes gracilis Bigelow.) 



" General," J. S. Newberry (Cat); Painesville, Wm. C. Werner; Licking Co., 

 H. L. Jone^ ( Cat.) ; Adams and Hocking counties, W. A. Kellerman ; Cincin- 

 nati, Jos. F. James (Cat.) 



GyrosTachys eatifolia ( Torr.) Kuntze. ( Spiranthes lati folia Torr.) 



"Northern O.," J. S. Newberry (Cat.); Painesville, Wm. C. Werner; Columbus, 

 E. E. Bogue ; Miami Valley, A. P. Morgan (Flora). 



480. PERAMIUM Salisb. ( Goodyera R. Br.) Rattlesnake Peantain. 



Peramium pubescens (Willd.) {Goodyera pubescens R. Br.) 

 In rich woods throughout the state, infrequent 



Peramium repens (L.) Salisb. {Goodyera repens R. Br.) 



" General," J. S. Newberry (Cat.) ; Licking Co., H. L. Jones (Cat.) 



481. ARETHUSA Gronov. 



Arethusa buebosa L. 



Lorain Co., A. A. Wright (Cat.) ; Licking Co., H. L. Jones (Cat.) 



482. LIMODORUM ( Calopogon R. Br.) 



Limodortjm tuberosum L. ( Calopogon pulchellus R. Br.) 



Geauga Lake, W. Krebs ; Lorain Co., A. A. Wright ( Cat.) ; Painesville, W. C. 

 Werner; Licking Co., H. L.Jones (Cat.) 



483. POGONIA Juss. 



t 



Pogonia trianthophora (Sw.) B. S. P. {P. pendula Lindl.) 

 Scarce but distributed throughout the state. 



Pogonia ophiogeossoides (L.) Ker. 



Lorain Co., A. A. Wright (Cat.) ; Licking Co., H. L. Jones (Cat) 



Pogonia verticiixata (Willd.) Nutt 



Painesville, H. C. Beardslee (Cat.) ; Fairfield Co., S. Renshaw. 



484. ORCHIS L. 



