258 ORCHIDACEAE 



Tertiary, rare: Cretaceous, scattered : Older Formations, increas- 

 ing at moderate elevations northward. 118-204 days. Sea level- 

 1,950 ft. 



19. Malaxis Soland (Achroanthes Raf. Microstylis (Nutt.) Eaton). 



Leaf sheathing the base of the stem. I. M. monophylla. 



Leaf clasping the stem near the middle. 2. M. unifolia. 



i. M. monophylla (L.) Sw. (A. monophylla (L.) Greene). In 

 woods: Que. to Man., Pa. and Neb. 

 Conn. Northwestern Litchfield Co. 



N. Y. Sam's Point, Ulster Co., and Pine Plains, Dutchess Co. 

 N. J. Reported from Andover Junction. 

 Pa. Wayne Co. 



Tertiary, o: Cretaceous, 0: Older Formations, not common. Not 

 south of the moraine. 120-149 days. 660-2,760 ft. 



2. M. unifolia Michx. (A. unifolia (Michx.) Rydb.). In woods 



and thickets: Newf. to Ont. and Minn., south to Fla., Ala. 



and Mo. 



Conn. Rare and local in northern New London, New Haven, 

 Middlesex and Fairfield counties, increasing northward in Tol- 

 land, Hartford and Litchfield counties. 



N. Y. L. I., mostly north of the moraine; S. I. and increasing 

 northward. 



N. J. A single station at Hammonton, Atlantic Co. (Bassett) ; 

 rare and local in Gloucester, Middlesex, Monmouth, and Mercer 

 counties, thence increasing northward, but not recorded from 

 Hunterdon and Somerset counties. 



Pa. Wayne, Monroe, Lackawanna, Philadelphia, Delaware and 

 Chester, presumably in the intervening territory. 

 Tertiary, very rare or wanting:* Cretaceous, scattered: Older 



Formations, increasing northward. 1 17-204 days. Sea level-2,300 



ft. 



20. Liparis L. C. Rich {Leptorchis Thouars) 



Raceme many flowered; lip as long as the petals. 1. L. liliifolia. 



Raceme few flowered; lip shorter than the petals. 2. L. Loeselii. 



i. L. liliifolia (L.) Richard (Leptorchis liliifolia (L.) Kuntze). In 

 moist woods and thickets: Me. to Minn., Ga. and Mo. 

 Conn. Throughout, but not common. 



* See Introduction paragraph 36. 



