174 [Assembly 



Udora, Nutt. 



canadensis, Nutt . Elodea canadensis, Miclix . Lakes and still 

 water . August . 



Valisneria, L . 



spiralis, L. Y. americana, Michx. Slow flowing water. Com- 

 mon in the Hudson north of the Highlands. Aug. 



Order ORCHIDACEiE. The Orchis Tribe. 



Habenaria, Willd., R. Br. 



$ 1. Platanthera, Rich., Lindl. 



orbiculata, Torr. Orchis macrophylla, Goldie. Woods . June- 

 July. 



Hookeriana, Torr. Orchis orbiculata, Hook. Woods. June. 



ciliaris, R. Br. Swamps. July- August. 



blephariglottis, Hook. Swamps. July- August. 



dilatata, Spreng. Swamps, northern counties . June- July . 



hyperborea, R. Br. Swamps. June-July. 



flava, Gray in Sill. Jour. 1840. Orchis flava, L. Habenaria 

 herbiola, R. Br. Moist woods. June-July. 



psycodes, Gray, I.e. Orchis psycodes, L. O. fimbriata, Ait. 

 O. fissa and incisa, Muhl. and Willd. 

 Var. grandiflora, Gray, I. c. Orchis grandiflora, Bigel. Mea- 

 dows and swamps . June- July . 



lacera, Gray, I. c. Orchis lacera, Michx. O. psycodes, Willd.; 

 not of Linn . 



obtusata, R.Br. Sphagnous swamps and wet woods, northern 

 counties . June-July . 



§ 2. Peristylus, Lindl. 

 bracteata, R.Br. Shady woods. June, 

 tridentata. Hook. Swamps. July- August. 



Orchis, L. 



spectabilis, L . Rocky woods . May . 



Microstylis, Nutt. 



ophioglossoides, Nutt . Swamps, and about the roots of trees . 



June, 

 brachypoda, Gray. Deep shady swamps . Fairfield, Herkimer 



county, Prof. Hadley . Oneida county, Dr. Gray 



and Dr. Bradley . July . 



