TROPICAL AMERICAN ORCHIDS 
Pleurothallis crescentilabia Ames Sched. Orch. 4 
(1923) 20. 
Plate 10: 1, dorsal sepal X 2. 2, lateral sepals X 2. 
3, petal X 2. 4, labellum X 5. 5, labellum from the side 
X 4. 6, column X 4. 
Fig. 5: drawn from alcoholic material. 
Pleurothallis cucullata Ames Sched. Orch. 3 (1923) 5. 
Plate 17: 1, labellum X 10. 2, flower X 2^?. 3, col¬ 
umn X 8. 
Pleurothallis dentipetala Rolfe ex Ames Sched. 
Orch. 3 (1923) 7. 
Plate 11: 1, flower X 4. 2, labellum and column X 5. 
3, labellum outspread X 7. 4, petal X 4. 
Pleurothallis diuturna Schltr. in Fedde Repert. 
Beihefte 17 (1922) 19. 
Plate 19: 1, labellum X 4. 2, dorsal sepal X 2}i. 
3, labellum with column, sepal and petal X 2. 
Pleurothallis divexa Ames Sched. Orch. 7 (1924) 20. 
Plate 5: 1, flower X 2. 2, petal X 5. 3, labellum X 12. 
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