K.\rLANATION OF PLATE 8 



Pleurothallis trilobata 



1. Plant, natural size. 



2. Flower x - r >. 



3. Petal X 9. 



4. Lip X 10. 



5. Column X 10. 



G. Pollinia enlarged. 



Pleurothallis brachypctala 



7. Plant, nat. size. 



8. Flower with part of the sepals removed x 7 



9. Lip X 10. 



10. Lip spread out X 10. 



Pleurothallis rotundifolia 



11. Plant, nat. size. 



12. Flower X 4. 



13. Petal x 7. 



14. Lip x 6. 



15. Lip spread out X 6. 



16. Column x 7. 



Pleurothallis velaticaulis 



17. Portion of stem with leaf and raceme, nat. size. 



18. Flower X 5. 



19. Dorsal sepal x 5. 



20. Lateral sepal X 5. 



21. Petal X 8. 



22. Lip x 7, 



