Plate XVII.—Populus deltoides.
| 1. Winter buds. |
| 2. Branch with sterile catkins. |
| 3. Sterile flower, back view. |
| 4. Sterile flower, front view. |
| 5. Scale of sterile flower. |
| 6. Fertile flower. |
| 7. Fruiting catkin. |
| 8. Branch with mature leaves. |
| 9. Variant leaf. |
Populus balsamifera, L.
Balsam. Poplar. Balm of Gilead.
Habitat and Range.—Alluvial soils; river banks, valleys, borders of swamps, woods.
Newfoundland and Nova Scotia west to Manitoba; northward to the coast of Alaska and along the Mackenzie river to the Arctic circle.
Maine,—common; New Hampshire,—Connecticut river valley, generally near the river, becoming more plentiful northward; Vermont,—frequent; Massachusetts and Rhode Island,—not reported; Connecticut,—extending along the Housatonic river at New Milford for five or six miles, perhaps derived from an introduced tree (C. K. Averill, Rhodora, II, 35).