FLORA OF VERMONT 31 



MICROSTYLIS. (ACHROANTHES) 

 M. monophyllos, Lindl. Swamps ; rare. 

 M. ophioglossoides, Nutt. (A. unifolia, Raf. ) Open woods; occasional. 



ORCHIS 



O, rotundifolia, Pursh. Cold cedar swamps. Monkton and Bristol, Pringle. 



O. spectabilis, L. Showy Orchis. Rich, moist woods at lower altitudes ; 

 common. 



POGONIA 



P. ophioglossoides, Nutt. Bogs ; frequent. 



P. pendula, Lindl. (P. trianthophora, B. S. P.) Dry woodlands. Fair 

 Haven, Chandler (Specimen in herbarium Bost. Soc. Nat. Hist.); 

 Newfane, Howe and Grout; Westminster, Blanchard. 



P. verticillata, Nutt. Colchester, Robbins, Torrey ; Pownal, Andrews. (Speci- 

 men in Williams College herbarium) 



SPIRANTHES. (GYROSTACHYS.) Ladies' Tresses 



S. cernua, Richard. Wet soil ; common. 



S. gracilis, Bigelow. Sandy woods and plains ; occasional, 



S. latifolia, Torr. (G. plantaginea, Britton.) Wet gravelly shores; occa- 

 sional. 



S. Romaiuoffiana, Cham. Bogs and cold moist soil ; occasional. 



DICOTYLEDONS. 



JUGLANDACEAE. WALNUT FAMILY 



CARYA. (HICOR1A) 



C alba, Nutt. (H. ovata, Britton.) Shellbark Hickory. Rich soil ; fre- 

 quent west of the Green Mountains ; less so in the southern Connecti- 

 cut valley and its tributaries. 



C. amara, Nutt. (H. minima, Britton.) Bitternut Hickory. Moist soil; 

 frequent, with range about as the preceding. 



C. porcina, Nutt. (H. glabra, Britton.) Pignut. W. Castleton, Pownal, 

 Eggleston. Marsh Hill, Ferrisburgh, Brainerd. 



JUGLANS 

 J. cinerea, L. Butternut. Rocky hillsides ; frequent. 



