48 



UnifoUum canadense (Desf.) Greene. On slaty slope and in 



brow of tributary (Agnes creek) in shade of trees in more or 



less extensive groups. Flowering in June and July, fruiting 



in July and August. 

 Trillium cernuiim L. Single and in scattered small clusters in 



shade of evergreens in upland "back woods" and in wooded 



bottom of gulfs, flowering in May, fruiting in August. 

 Trillium erectum L. In the shade of evergreens like the foregoing, 



scattered singly and in small groups. May and June. 

 Iris versicola L. Solitary and in small clusters in swamps amidst 



pine woods and in swampy ground along streams. July. 

 Sisyrincliium bermudianum Mill. Scattered singly or in very 



small clusters in hilly pastures and along roads. June. 

 Cypripedium acaule Ait. Single and in small groups in shade of 



evergreens in gulfs and plateau-lands. June. 

 Habenaria psycodes (L.) Gray. In swamps amidst pine woods, 



very rare, solitary. July. 

 Gyrostachys plantaginea Britton. In pastures and meadows, 



scattered. September. 

 Gyrostachys gracilis Kunze. In slopes and bottom of gulfs, 



preferring wooded lands. August. 



DiCOTYLEDONES 

 CHORIPETALAE 



Juglans cinerea L. Scattered singly through main gulf of Amster 



Brook, and through other gulfs and ravines of the region, 



also on the plateau. 

 Hicoria minima (Marsh) Britton. In moist woods and swamps 



of the plateau-forest and also the plateau-swamp formations. 



It flowers in May and June and fruits from September to 



October. 

 Populus tremuloides Michx. In dry or moist soil, mostly confined 



to the plateau-valley formation, in bottom of Amster Brook 



Valley. March-May. 

 Salix alba var. vitellina L. Occasionally found along roads and 



also near water courses. Also occurring in small thickets. 



April and May. 



