94 BOTANY OF MICHIGAN 



Salix rostrata Richards. (S. bebbiana Sarg.). Beaked willow. Dry 

 or damp open ground. Plentiful. 



Salix Candida Fliigge. Hoary willow; Very wet or bogg} r open ground. 

 Common. 



Salix pellita Anders. Satiny willow. Along the low marshy banks 

 of the Tahquamenon River in Luce County. Abundant. 



Populus alba L. White poplar. Occasionally planted, but apparently 

 not spreading. 



Populus tremuloides Michx. American aspen. Throughout, but sel- 

 dom abundant. 



Populus grandidentata Michx. Large-toothed aspen. Rich woods 

 with other trees. Never plentiful. 



Populus balsamifera L. Balsam poplar. Trees often large and extend 

 to the south shore of Lake Superior. Plentiful. 



Populus deltoides Marsh. Cottonwood. A horticultural form called 

 Carolina poplar, or large-leaved poplar, occasionally planted as an orna- 

 mental tree, but apparently not spreading. 



Populus nigra italica Du Roi. Lombardy poplar. Occasionally 

 planted but not spreading. 



MYRICACEAE. Sweet Gale Family 



Myrica gale L. Sweet gale. In very wet places, on borders of ponds 

 and small lakes and along streams. Often very abundant. 



Myrica asplenijolia L. (Comptonia peregrina (L.) Coulter). Sweet 

 fern. Open dry sterile ground. Often very abundant. 



JUGLANDACEAE. Walnut Family 



Juglans cinerea L. Butternut. Reported as occasionally planted. 

 Large native trees noticed on Bois Blanc Island in Mackinac County, 

 very probably its northern limit in the eastern counties of the Upper 

 Peninsula. 



Juglans nigra L. Black walnut. Reported as frequently planted and 

 said to thrive. 



BETULACEAE. Birch Family 



Corylus rostrata Ait. Beaked hazelnut. Dryish open or partially 

 shaded ground. Common and often abundant. 



Ostrya virginiana (Mill.) K. Koch. Ironwood. In hardwoods with 

 other trees. Plentiful. 



Betula lutea Michx.f. Yellow birch. One of the three principal trees 

 of the hardwood forests. Common with beech and sugar maple. Large 

 shaggy-barked ones often called "red birch." It extends to the south 

 shore of Lake Superior. 



