MIDDLESEX FLORA. 103' 



*S. obtusata, Bichards. 



Concord, introduced from Wachusett by Minot Pratt. June. 

 H. Hookeri, Torr. 



Ashby ("W. H. Manning) ; Stoneham (Mrs. P. D. Eichards) ; 



Hopkinton (Dr. C. W. Swan). Eare. June. 

 H. orbiculata, Torr. 



Generally distributed, but not common. July. 

 H. ciliaris, E. Br. Yellow Fringed-Orchis. 



Lexington, 1862 (Wm. Boott), specimen in the Gray herb. Very 



rare. July-Sept. 

 H. blephariglottis, Hook. White Fringed-Orchis. 



Generally distributed, but rare. July-Aug. 

 H. blephariglottis, Hook., var. liolopetala, Gray. 



Littleton (W. H. Manning). July-Aug. 

 H. lacera, E. Br. Eagged Fringed-Orchis. 



Common. July-Aug. 

 H. psycodes. Gray. Purple Fringed-Orchis. 



Common. A form at Maiden with white flowers (F. S. Collins). 



July-Aug. 

 H. fimbriata, E. Br. Larger Purple Fringed-Orchis. 



Generally distributed, but not common. June-July. 



Goodtera, E. Br. 



G. repens, E. Br. Eattlesnake Plantain. 



Not uncommon. Aug. 

 C. pubescens, E. Br. Eattlesnake Plantain. 



Eather common. July-Aug. 



Spiranthes, Eich. 



S. latifolia, Torr. 



Groton (Miss H. E. Haynes) ; N. Beading (W. H. Manning). 



Eare. June. 

 S. cernua, Eich. Ladies' Tresses. 



Common. Aug.-Oct. 

 S. graminea, Lindl., var. Walteri, Gray. 



Townsend (Miss H. E. Haynes); Billerica (W. H. Manning). 



Eare. July-Aug. 

 S. gracilis, Bigel. Slender Ladies' Tresses. 



Common. July-Oct. 



Arethusa, Gronov. 



A. bulbosa, L. 



Frequent. May. 



