MICHIGAN ACADEMY OF SCIENCE. 
171 
125. Limodorum tuberosum, Liu. Grass Pink. 
Marl bogs. Common. 
Class II. Dicotyledones. 
Subclass I. Polypetalae. 
Order XI. Salicales. 
Family 21. Salicaceae. 
126. Fopulus balsamifera, Lin. Balsam Poplar. 
Wet grounds. Common. 
127. Populus deltoides, Bartram. Cottonwood. 
Wet grounds. A large tree with smooth branches. Frequent. 
12S. Populus grandidentata, Mx. Aspen. 
Woods and thickets. Frequent. 
129. Populus tremuloides, Mx. Poplar, White Poplar. 
Thickets. Common. 
The bark is a commercial article ; it is used as a tonic, febrifuge, 
and diuretic; chiefly in intermittent fevers. 
130. Salix alba, Lin. Willow. 
Banks of streams. Bare. 
131. Salix alba, Lin., Var., vitellina (Lin.) Koch. Willow. 
An escape. Frequent. 
132. Salix amygdaloides, Anders, Willow. 
Borders of streams, etc. Frequent. 
133. Salix Candida, Fleugge. 
Bogs and swamps. Common. 
134. Salix cordata, Muhl., Var. august&ta (Ph.) Anders. Willow. 
Thickets. Common. 
135. Salix discolor, Muhl. Willow. 
Open woods and thickets. Frequent. 
136. Salix fragilis, Lin. Willow. 
Low grounds. Slowly spreading. 
Probably was planted originally to form a wind break or hedge. 
137. Salix longifolia, Muhl. Willow. 
Wet banks. Rare. 
138. Salix lucida, Muhl. Willow. 
Thickets on low grounds. Rare. 
139. Salix peptiolaris, Sm. Willow. 
Thickets. Common. 
140. Salix rostrata, Richards. Willow. 
Thickets. Common. 
141. Salix seric-ea, Marshall. Willow. 
Thickets. Common. 
142. Salix serissima (Bailey) Fernald. Willow. 
Bogs and swamps. Rare. 
143. Salix Wlieeleri (Rowlee) Rydb. Willow. 
Wet banks. Rare. 
Order XII. Fagales. 
Family 22. Corylaceae. 
144. Carpiuns Carolinian a, Walt. Ironwood. 
Thickets. Common. 
145. Ostrya Virginiana (Mill.) Koch. Ironwood. 
Thickets. Rare. 
