160 ECarl M. Wiegand and Arthur J. Eames 



14. Microstylis (Nutt.) Eaton 

 a. Pedicels equaling or shorter than the ovaries ; lip acute, unlobed. 



1. M. monophyllos 

 a. Pedicels slender, much longer than the ovaries ; lip broad and truncate at apex, 

 3-lobed. 2. M. unifolia 



1. M. monophyllos (L.) Lindl. Adder's Mouth. 



Boggy, mossy woods, rarely in ravines, in gravelly calcareous regions ; scarce. June 

 15-July. 



Caroline, low woods s. of depot; Headwaters Swamp (A. H. Wright); Michigan 

 Hollow Swamp; springy brook on Thatcher Pinnacles (D.) ; w. of Key Hill; near 

 Smith Corners n. of Cayuta Lake (D.) ; Cascadilla Glen (D.) ; Ellis Hollow Swamp 

 (D.\) ; Ringwood; swamps near Freeville (D.\) ; Mud Creek, Freeville, frequent 

 (D. !) ; Beaver Brook (£>.) ; arbor vitae swamp e. of Clyde. 



Que. to Man., southw. to Pa., Ind., and Nebr. ; rare southw., and rare or absent on 

 the Coastal Plain. Found also in Eurasia. 



2. M. unifolia (Michx.) BSP. Adder's Mouth. 



In dry or wet humus over acid or neutral soils ; rare. July. 



Dry woods n. side of South Pinnacle, Caroline; dry open woods, hilltop w. of 

 West Danby (K. M. W ., A. J. E., & L. F. Randolph) ; boggy woods, Malloryville 

 Bog; Grotto (A. H. Wright) ; swampy woods n. e. of Featherbed Bog (L. Griscom, 

 F. P. Metcalf, & A. H. Wright). 



Newf. to Man., southw. to Fla., Ala., and Mo. ; rare on the Coastal Plain. 



15. Liparis Richard 

 a. Lip equaling the petals, cuneate-obovate, translucent, madder purple, 10-12 mm. 

 long. 1. L. liliifolia 



a. Lip shorter than the petals, obovate or oblong, yellowish green, 5 mm. long. 



2. L. Loeselii 



1. L. liliifolia (L.) Richard. 



On dry neutral or slightly acid mixtures of clay and sand, in open woodlands; 

 \ cry rare. June 20-July 20. 



Near "Ovid, Seneca Co." (Chickering & Braver in Sartwell Herb.), "a doubtful 

 specimen" (D.) ; dry oak woods near the old street railway grade, Renwick slope, 

 1916 (A. A. Allenl). 



N. H. and Mass. to Minn., southw. to Ala. and Mo. ; infrequent on the Coastal 

 Plain. 



2. L. Loeselii (L.) Richard. 



Neutral or slightly acid soils on calcareous bogs, meadows, and springy slopes ; 

 frequent. June-July 15. 



Summit Marsh (D.) ; springy hillside, North Spencer; swamp w. of Key Hill; 

 Cascadilla Creek ; marl springs, Fall Creek above Forest* Home ; marsh between 

 Fall Creek and the lake (D.) ; Ringwood (D.) ; Freeville (D.) ; springs near Mud 

 Creek, Freeville (D.) ; Cayuga and Montezuma Marshes (D.) ; Junius marl ponds; 

 Turtle Pond ; Duck Lake ; Westbury Bog. 



N. S. to Sask., southw. to Ala. and Mo. ; rare on the Coastal Plain. 



16. Aplectrum (Nutt.) Torr. 

 1. A. hyemale (Muhl.) Tons. Puttyroot. Aham-and-Eve. 



Rich, rather dry woodlands, in deep humus ; scarce. June 1-20. 



Enfield Glen; Inlet Valley, s. of Larch Meadow (F. C. Curtice) ; Six Mile 

 Creek (D.) ; McGowan Woods (D.) ; woods near Varna {H. L. Locke & C. S. 

 Slich! an) ; woods n. of Etna (D.) ; near Ludlowville (H. B. Lord) ; near Dryden- 



