EXPLANATION OF PLATE 2 



Habenaria Purdiei 



1. Mower X 2. 



2. Lateral sepal X 3. 



3. Petal x 3. 



Habenaria social i* 



4. Flower X 2. 



5. Lateral sepal X 4. 



6. Petals x 4. 



7. Lip x 4. 



Habenaria troyana 



8. Flower X 2. 



9. Lateral sepal X about 5. 



10. Petal X 4. 



11. Another form of petal X 4. 



12. Lip X 4. 



Pogonia gent iano ides 



13. Plant, natural size (from Swartz's type). 



14. Flower X 2. 



15. Lip X 4. 



Vanilla inodora 



16. Lip and column X \. 



Vanilla Wrightii 



17. Flower, with one sepal and one petal removed, X J. 



Vanilla claviculata (by error parasitica) 



18. Lip and column x h. 



19. Column showing attachment of portion of lip X h 



Vanilla phseantha 



20. Lip (cut open) and column X J. 



Pelexia setacea 



21. Flower, nat. size. 



22. Flower, with two sepals and one petal removed, nat. size, 



