176 [Assembly 



Listera, R. Br. 



cordata, R.Br. Sphagnous swamps. June- July. 



Goodyera, R. Br. 



pubescens, R. Br. Shady fertile woods . July- August, 

 repens, R. Br. Shady moist woods, northern counties . July . 



Cypripedium, L. Ladies' Slipper. 



pubescens, Willd. C. parviflorum, Ait. Mocasin Flower, Noah's 



Ark . Rocky moist woods . May . 

 acaule, Ait. Dry woods and sandy thickets . May . 

 spectabile, Sw. Swamps. June-July, 

 arietinum, Ait. Near Oneida lake . Dr. Gray . 



Order PONTEDERIACEvE . 



Pontederia, L. 



cordata, L. Picker -el-weed . In water . July- August . 



Var. angustifolia, Torr. P. angustifolia, Pursh. Mountain 

 lakes . Pursh . 



Schollera, Schreb. 



graminifolia, Muhl. Leptanthus gramineus, Michx. In flowing 

 waters . July- August . 



Heteranthera, Ruiz and Pavon . 



reniformis, R. §■ P . Leptanthus reniformis, Michx. Muddy 

 banks of rivers, Fishkill, Hudson, &c. July- 

 August . 



Order MELANTHACE^. The Colchicum Tribe. 



ZlGADENUS, Michx. 



glaucus, Nutt. Shore of Lake Erie. Dr. Beck. 



Lermanthium, Willd. 



virginicum, Willd. Melanthium virginicum, L. Wet meadows. 

 Orange county. Dr. Horton, fide Beck . Is not 

 this L. hybridum? 



Veratrum, L. White Hellebore . 

 virida, Ait. Swamps. May. 



