EXPLANATION OF THE PLATES. 



Plate DCXV. Abies venusta. 



1. A branch with staminate flowers, natural size. 



2. A staminate flower, enlarged. 



3. An anther, side view, enlarged. 



4. An anther, seen from below, 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 bract of a pistillate flower, lower side, enlarged. 



8. A leaf, natural size. 



9. Cross section of a leaf magnified fifteen diameters. 

 10. Winter-buds, natural size. 



Plate DCXVL Abies venusta. 



1. A fruiting branch, natural size. 



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



3. A cone-scale, upper side, with its seeds and bract, natural size. 



4. A seed, enlarged. 



5. Axis of a cone, with its neduncle. natural size. 



