ORCHIDACEAE 253 



2. P. divaricata (L.) R. Br. In swamps: S. N. J. to Fla. and Ala. 

 N. J. Batsto and Quaker Bridge, Burlington Co.; Bennett, Cape 



May Co. 



Tertiary, very rare: Cretaceous, o: Older Formations, o. Not 

 north of the moraine. 168 days. About sea level. 



ii. Isotria Raf. 



Lip crested along a narrow line down the face; peduncle as long as the 



capsule or longer. I . /. verticillata. 



Lip crested over the whole face and lobes; peduncle shorter than the 



capsule. 2. I. affinis. 



i. I. verticillata (Willd.) Raf. (Pogonia verticillata (Willd.) Nutt.). 

 In moist woods: E. Mass. to Ont., Wise, Ind. and Fla. 

 Conn. Throughout, increasing southward. 

 N. Y. Common south of the moraine on L. I.; S. I., decreasing 



up the Hudson Valley to Dutchess Co., apparently wanting 



northward. 

 N. J. Scattered throughout, rare in the pine-barrens. 

 Pa. Throughout. 



Tertiary, rare and local: Cretaceous, scattered : Older Formations, 

 not very common. 118-204 days. Sea level-1,800 ft. 



2. I. affinis (Austin) Rydb. (Pogonia affinis Austin). In moist 

 woods: Vt. to N. J. and Pa. Rare and local. 

 Conn. Rare and local near the coast in New Haven and Fairfield 



counties. 

 N. Y. Reported from southern N. Y. in Gray's Manual, ed. 5, 507. 



Otherwise unknown. 

 N. J. Closter (station destroyed) and near Trenton. 

 Pa. Monroe, Berks, Chester (station not recently verified) and 



Philadelphia counties. 



A rare and little-known species, whose distribution needs ad- 

 ditional study. 



12. Triphora Nutt. 

 1. T. trianthophora (Sw.) Rydb. (Pogonia trianthophora (Sw.) 

 B. S. P.). In rich woods: Me. to Fla., Wise, and Kan. 

 Conn. Rare and local in New London, Hartford and Litchfield 



counties. 

 N. Y. Reported from but not recently collected near the vicinity of 



N. Y. City. Otherwise unknown. 

 N. J. Along and near the Palisades; Mt. Tabor, Morris Co. 



