ORCHIDACEAE 245 



Tertiary, common: Cretaceous, confined to northeastern Middle- 

 sex and northern Monmouth counties, N. J.: Older Formations, 

 rare along and north of the moraine on L. I. 173-185 days. 

 About sea level. 



5. S. graminoides Bicknell (S. gramineum Curtis). In wet 



meadows and in damp woods: N. H. to Minn., Fla. and Tex. f 



Santo Domingo. 



Conn. Common throughout. 



N. Y. Frequent on L. I.; S. I.; Westchester Co., increasing and 



common northward, but unknown in the Catskills. 

 N. J. The coastal plain except the pine-barrens and Cape May; 



Bergen Co., increasing northwestward. 

 Pa. Pike, Monroe, Northampton, Lehigh, Chester and Delaware 



counties. 



Tertiary, unknown on Beacon Hill, rare elsewhere: Cretaceous, 

 rare: Older Formations, increasing northward. 153-204 days. 

 Sea level-680 ft. 



6. S. atlanticum Bicknell. In dry or moist soil: Me. and Vt. to 



Fla. and Miss. 



Throughout the range, most abundant along the coast, and 

 always decreasing inland and in the mountains. 



A form described from southern N. J. as 5. intermedium Bicknell seems doubtfully 

 distinct from 5. mucronatum. 



ORCHIDACEAE 



Anthers 2; lip a large inflated sac. 



Plant acaulescent, scape i-flowered. 1. Fissipes. 



Plant caulescent, scape 1-00 flowered. 2. Cypripedium. 



Anther solitary. 



Pollinia with a caudicle which is attached at the base to a 

 viscid disk, or gland. 

 Glands enclosed in a pouch, sepals united above into a 



hood; lip entire. 3. Galeorchis. 



Glands not enclosed in a pouch. 



Lip not fringed or cut-toothed. 

 Stem leafy. 



Valves of the anthers dilated at the base, 



enclosing the glands below. 4. Perularia. 



Valves of the anthers not dilated at the 

 base. 

 Glands surrounded by a thin 

 membrane. 5. Coeloglossum. 



