40 - Evans: HEpATICAE OF PUERTO RICO 
than six marginal cells. The perianth of D. setistipa is distin- 
guished by its unarmed horns. 
YALE UNIVERSITY. 
Explanation of Plates 
As in the first paper of this series, the figures were drawn by the writer and pre- 
pared for publication by Miss Hyatt. 
PLATE I 
Drepanolejeunea biocellata Evans. 1. Part of stem, postical view, < 70. 2. Part 
of stem, antical view, 70. 3. Cells from middle of lobe, 400. 4-6. Apices of 
lobes, < 280. 7. Cells from margin of lobe, 280. 8. Apex of lobule, & 280. 9. 
Underleaf, < 280. The figures were all drawn from the type-specimens. 
Drepanolejeunea subulata Steph. 10. Part of stem, postical view, X 45. II. 
Leaf, antical view, & 45. 12. Cells from middle of lobe, & 400, 13. Apex of lobe, 
> 280. 14. Base of lobe, & 280. 15. Apex of lobule, 280. 16, Underleaf, « 
280. 17, 18. Bracts, * 70. 19. Bracteole, 70. The figures were all drawn from 
specimens collected by A. A. Heller (no. 4712). 
PLATE 2 
Drepanolejeunea crassiretis Evans. 1. Part of sterile stem, postical view, 75. 
2. Part of stem, antical view, 75. 3. Leaf, flattened out, & 75. 4. Cells from 
middle of lobe, 440. 5-7. Apices of lobes, & 310. 8. Cells from margin of lobe, 
XX 310. 9. Apex of lobule, & 310. 10. Underleaf, % 310. 11, 12. Bracts, < 75. 
13. Bracteole, < 75. The figures were all drawn from the type-specimens. 
Drepanolejeunea Araucariae Steph. 14. Part of stem with 9 inflorescence, posti- 
cal view, X 75. 15. Part of sterile stem, antical view, 75. 16, Part of stem with 
& inflorescence, postical view, X 75. 17. Cells from middle of lobe, < 440. 18. 
Apical half of lobe. 310. 19. Apex of lobule, & 310. 20, Underleaf, >< 310. 
21, 22. Bracts, X 75. 23. Bracteole, < 75. The figures were all drawn from the 
specimens collected by the writer (no. 36). ; 
PLATE 3 
Drepanolejeunea dissitifolia Evans, 1. Part of plant, postical view, < 70. 2. $ 
inflorescence, antical view, < 70. 3. ¢ inflorescence, postical view, « 70. 4. Cells 
from middle of lobe, 400. 5. Apex of lobe, ‘280. 6. Apex of lobule, 280. 
7, 8. Underleaves, 280. The figures were all drawn from the type-specimens. 
Drepanolejeunea bidens (Steph.) Evans. 9g, Part of plant with 9 inflorescence, 
postical view, < 70. 10. Leaf, antical view, 70, 11. Cells from middle of lobe, 
X 400. 12, 13. Apices of lobes, 280. 14. Apex of lobule, < 280. 15. Under- 
leaf, < 280. 16. Bract with connate bracteole, x 70. 17. Bract, < 70. All the 
figures were drawn from specimens collected by A. A. Heller (no. 11 39). 
PLATE 4 
Drepanolejeunea bispinulosa Evans. 1, Part of stem, postical view, 70. 2. 
Part of stem, antical view, 70. 3. Cells from middle of lobe, )< goo. 4. Apex of 
_ lobe, X 280. 5. Cells and spiniform tooth from antical margin of lobe, < 280. 6. 
Apex of lobule, aio. . Underleaf, < 280. The figures were all drawn from the 
oe a 
