EXPLANATION OF THE PLATE. 



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Plate DCX. Abies baisamea. 



1. A branch with staminate flowers, natural size. 



2. A staminate flower, enlarged. 



3. An anther, seen from below, enlarged. 



4. An anther, side view, enlarged. 



5. A branch with pistillate flowers, natural size. 



6. A scale of a pistillate flower, upper side, with its bract 



and ovules, enlarged. 



7. A fruiting branch, natural size. 



8. A cone-scale, lower side, with its bract, natural size. 



9. A cone-scale, upper side, with its seeds, natural size. 



10. A cone-scale of the long-coned Wisconsin form, upper 



side, with its bract, natural size. 



11. A seed, enlarged. 



12. Cross section of a leaf, magnified fifteen diameters. 



13. Winter-buds, natural size. 



14. A seedling plant, natural size. 



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