ORCHIDACEAE 2 57 



Tertiary, o: Cretaceous, not very common: Older Formations, o. 

 Not north of the moraine. 175-204 days. About sea level. 



The reported occurrence of O. convallarioides (Sw.) House (L. convallarioides (Sw.) 

 Torr.) is an error. The plant on which it was based is 0. cordata L. 



18. Peramium Salisb. 



Spike loosely flowered; lip with recurved margins. 



Spike l-sided; beak shorter than the stigma proper; blotches of 



the leaf mostly white. I. P. ophicides. 



Spike spiral; beak as long as the stigma proper or longer; blotches 



of the leaf mostly dark green. 2. P. tesellatum. 



Spike densely flowered, not 1 -sided; margins of the lip not recurved. 3. P. pubescens. 



1. P. ophioides (Fernald) Rydb. (Epipactis repens ophioides 



(Fernald) A. A. Eaton). In cold mossy woods: Prince 



Edward's Island to Man. and S. Car., Mich, and Colo. 



Conn. Hartford and Litchfield counties, increasing northwest- 

 ward. 



N. Y. The higher Catskills of Greene Co. 



Pa. Mountains of Wayne and Monroe Co. 



Tertiary, o: Cretaceous, o: Older Formations, increasing at 



higher elevations. Not south of the moraine. 1 17-145 days. 



700-2,820 ft. 



2. P. tesellatum (Lodd.) Rydb. (Epipactis tesellata (Lodd.) A. 



A. Eaton). In woods or bogs: Newf. to Lake Superior, 



south to Pa. 



Conn. Northern Hartford and Litchfield counties, increasing 



northwestward. 

 N. Y. Ulster, Sullivan and Greene counties. 



Tertiary, 0: Cretaceous, 0: Older Formations, increasing at higher 

 elevations. Not south of the moraine. 117-145 days. 500- 

 2,575 ft- 



3. P. pubescens (Willd.) MacM. (Epipactis pubescens (Willd.) 



A. A. Eaton). In dry woods: Newf. to Ont. and Minn., 



south to Fla. and Tenn. 



Conn. Throughout. 



N. Y. L. I. ; S.I. and increasing up the Hudson Valley. 



N. J. Throughout the state except the pine-barrens, there rare; 



not reported from the region east of the barrens. 

 Pa. Luzerne, Monroe, Northampton, Montgomery, Chester and 



Delaware counties. 

 18 





