154 Guayale. 



Description of Plate 35. 



1-2. First primordial leaf, seedling grown in shade. 



3-4. Same, field. 



5-8. Same, seedling under irrigation (exp. 141, May 1908). 



6-7. Same, in strongly saline soil. 



9. Epidermis of a field plant (Station 2). 



10. Same, irrigated plant. 



11. Stoma of leaf, figs. 6-7. 



12. Transverse section, definitive leaf; field (Station 2, April 1909) 



13. Same, irrigated. August 1908. 



14. Detail of fig. 12. 



15. Detail of fig. 13. 



