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158 SIXTEENTH REPORT. 



Populus balsamifera L. Balsam Poplar. — Very common on and near the 

 Lake Huron shore. Occasional in other places. A good sand-l^inder. 



Populus candicans Ait. Balm of Gilead. — Occasionally planted, but not 

 escaping so far as observed. 



Populus deltoides Marsh. Cotton-wood. — Frequent in various situations, 

 usualh' in rich ground. Often a very large tree. A tree very similar to this 

 has been extensively planted for shade under name of Carolina poplar or 

 large-leaved poplar and it has generally been referred to this species. After 

 investigation Prof. C. E. Bessy has named it Populus arguta, applying the 

 name P. deltoides to the eastern and P. occidentalis to the western cotton- 

 wood. Have noticed staminate flowers only on the Carolina poplar. Not 

 recommended as a street, road or ornamental tree. 



Populus nigra italica Du Roi. Lombardy Poplar. — Much planted and 

 often spreading in sandy ground by its roots. Have noticed staminate 

 flowers only. 



Myricaceae. Sweet Gale Family. 



Myrica asplenifolia L. Sweet Fern.— Frequent in very dry and sandy 

 ground. 



Juglandaceae. Walnut Family. 



Juglans cinerea L. Butternut. — Frequent in rich gromid, wuth other 

 trees. Often in damp places not far from Lake Huron shore. 



Juglans nigra L. Black Walnut. — Occasional in rich ground, mostly creek 

 bottoms. ]\Iost abundant along the Aux Sables river. 



Carya ovata (Mill.) K. Koch. Shag-bark Hickory. — Frequent in rich 

 woods. 



Carya laciniosa (Michx. f.) Loud. Big Shell-bark. King Nut. — Certainly 

 as far north as the northern part of Kent Co., and very probably on Walpole 

 Island its probable northern limit. 



Carya microcarpa Nutt. Small-fruited Hickory. — Occasional in dryish 

 ground with other trees. 



Carya cordiformis (Wang.) K. Koch. Bitter Nut. — Frequent in damp 

 ground with other trees. 



Betulaceae. Birch Family. 



Corylus americana Walt. Hazelnut. — Very common usually on good 

 ground, in thickets and on borders of woods. 



Corylus rostrata Ait. Beaked Hazelnut. — Occasional in dryish open 

 ground and on hillsides. Newton Tripp. 



Ostrya virginiana (Mill.) K. Koch. American Hop Hornbeam. — Ironwood. 

 Frequent in rich woods 



Carpinus caroliana Walt. Blue Beach. — Common in rich woods and along 

 streams. 



Betula lutea ]\Iichx. f. Yellow Birch. — Frequent with other trees in rich 

 moist ground. Some expert botanists much doubt whether this is properly 

 named, and do not believe that B. lenta, L., cherry birch, exists in Western 

 Ontario or Eastern Michigan, but suggest that both should be named B. alle- 

 ghaniensis, Britton, southern yellow birch. 



Betula alba papyrifera (Marsh.) Spach. Paper Birch. Canoe Birch. 

 White Birch. — Common in damp rich ground, and frequent in sand along 

 the Lake Huron shore. 



