290 Evans: Hepaticae of Puerto Rico 



Kxplauation of plates X9 and 20 



The figures were drawn by the writer and prepared for publication by Miss Hyatt. 



+ 



Plate 19 



Ceratolejeunea spinosa (Gottsche) Steph, I. Part of plant with perianth, postical 

 view, X 24. 2. Part of stem, postical view, X 24. 3. Section through lobule, cut 

 parallel with the stem, X 45- 4- Utriculus, antical view, X 35- 5- Cells frommiddle 

 of lobe, X 265. 6. Section through cells of lobe, X 200. 7. Cells from antical mar- 

 gin of lobe, X 200. 8. Cells from apex of lobe, X 200. 9. Apex of lobule, X ^00, 

 10. Apex of underleaf division, X 200. II. Bracts and bracteole, X ^4- The fig- 

 ures were all drawn from specimens collected by the writer (97). 



Ceraiohjetinea valida Evans. 12. Branch with perianth, postical view, X 24* 

 13. Part of stem, postical view, X 24. 14. Base of branch with utriculi, antical view, 

 X 24. 15. Cells from middle of lobe, X 265. 16. Section through cells of lobe, 

 X 200. 17. Apex of lobe, X 200. 18. Apex of lobule, X 200. 19. Apex of under- 

 leaf division, X 200. 20. Bracts and bracteole, X 24. The figures were all drawn 

 from the type specimen. 



Plate 20 



Ceratolejeunea ScJiwanechei Steph, I. Branch with perianth, postical view, X 24- 

 2. Another branch with perianth, postical view, X 35- 3- Part of stem, postical view. 

 X 24. 4. Branch with utriculi. postical view, X 35- 5* Apices of lobes, X 45- ^' 

 Cells from middle of lobe, X 265. 7, Cells from base of lobe with two ocelli, X 200) 

 8, 9, Apices of lobes, X 200. 10, 11. Apices of normal lobules, X 200. 12. Apex 

 of spherical lobule, X 200. 13, 14. Apices of underieaf divisions, X 200. iS- 

 Bracts and bracteole, X 24. 16. Bracteole with lobules of bracts, X 24- IJ* ^^^^^^ 

 and bracteole, the latter on the left, X 24. 18. Bracts and bracteoles, X 24- ^^^ 

 figures were all drawn from specimens collected by the writer (^6, 14.6 and jSg)* 



Ceratolejeunea pateniis'sima (Hampe & Gottsche) Evans. 19. Part of stem, pos- 

 tical view, X 35- 20. Part of stem, antical view, X 35- 21. Perianth with bracts and 

 bracteole, X 35- 22. Cells from middle of lobe, X26S. 23. Apex of lobe, X '^^' 

 24. Apex of lobule, X 20O. 25. Underieaf, X 200. 26. Apex of underieaf division, 

 X 200. Figures 22 and 24 were drawn from Wright's Cuban specimens ; the others 

 were all drawn from the type specimen. 



