FLORA OF VERMONT 29 



ZYGADENUS 

 Z. elegans, Pursh. Bluffs of Lake Champlain, Ferrisburgh, Brainerd. 



IRIDACEAE. IRIS FAMILY 



IRIS 

 I. versicolor, L. Blue Flag. Wet meadows ; common. 



SISYRINCHIUM. Blue-eyed Grass 

 S. angustifolium, Mill. Moist meadows ; common. 

 S. Atlanticum, Bicknell. Stratton, above 2000 feet, Grout. 



. ORCHIDACEAE. ORCHID FAMILY 



APLECTRUM 

 A. hiemale, Nutt. (A. spicatnm, B. S. P.) Rich woods ; occasional. 



ARETHUSA 

 A. bulbosa, L. Sphagnum bogs ; occasional. 



CALOPOGON. (L1MODORUM) 

 C. pulchellus, R. Br. (L. tuberosum, L. ) Bogs ; occasional. 



CALYPSO 



C. borealis, Salisb. (C. bulbosa, Oakes.) Cold cedar swamps of the northern 

 counties ; rare. 



CORALLORHIZA. Coral-root 



C. innata, R. Br. (C. Corallorhiza, Karst.) Swamps and damp woods ; fre- 

 quent. 



C. multiflora, Nutt. Dry woods ; occasional. 



C. odontorhiza, Nutt. "Bellows Falls," Carey; Pease Mountain, Pringle ; 

 Pownal, Eggleston. 



CYPRIPEDIUM. Lady's-slipper. Moccasin-flower 



C. acaule, Ait. Stemless Lady's-slipper. Woods and swamps ; frequent. 



C arietinum, R. Br. Ramshead. Rocky woods and swamps ; local and rare. 



C. parviflorum, Salisb. Smaller Yellow Lady's-slipper. Bogs and low 

 woods ; frequent. 



C. pubescens, Willd. (C. hirsutuin, Mill.) Larger Yellow Lady's-slipper. 

 Rich moist woods ; frequent. 



