TROPICAL AMERICAN ORCHIDS 
Pleurothallis periodica Ames Sched. Orch. 7 (1924) 
21 . 
Plate 4: 1, labellum X 6. 2, column and petal X 6. 
3, dower X 3. 
Pleurothallis poasensis Ames Sched. Orch. 1 (1922) 
10 . 
Plate 12: 1, petal X 5. 2, column X 8. 3, labellum 
outspread X 6. 1, dorsal sepal X 3. 5, lateral sepals X 2%. 
Pleurothallis pompalis Ames Sched. Orch. 7 (1924) 
23. 
Plate 4: 1, flower X 2. 2, labellum X 5. 3, labellum 
from above X 5. 4, column and petal X 5. 
Pleurothallis praegrandis Ames Sched. Oreh. 5 
(1923) 17. 
Plate 17: plant natural size, i, column and labellum 
X 10. 2, petal X 6%. 3, lateral sepals X 6%. 4, dorsal 
sepal X 6%. 5, labellum outspread X 10. 
Pleurothallis propinqua Ames Sched. Oreh. 6 (1923) 
68 . 
Plate 7: 1, column (after pollination) X 9. 2, flower 
X 3. 3, labellum X 6. 
Pleurothallis Rowleei Ames Sched. Orch. 1 (1922) 11. 
Plate 18: 1, petal ,X 3. 2, column and labellum X 5. 
3, labellum outspread X 5. 4, flower X 2. 
Pleurothallis saccata Ames Sched. Orch. 4 (1923) 25. 
Plate 17: 1, lateral sepals X 3. 2, petal X 5%. 3, 
dorsal sepal X 3. 4, labellum X 3. 5, labellum from the 
side X 3. 
Pleurothallis samacensis Ames Sched. Orch. 2 (1923) 
22. 
Plate 5: 1, flower X 4. 2, labellum X 8. 3, column X 8. 
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