PLATE XXIII. HEMLOCK. 



1. Branch with needles and staminate flowers, x i. 



2. Branch with needles and pistillate flowers, x I. 



3. Branch with needles and mature cones, x J. 



4. A cone scale with two winged seeds, natural size. 



5. A winged seed, natural size. 



6. A seed, enlarged. 



7. Leafless branch with buds, enlarged. 



8. A seedling, natural size. 



