259 



9. Petals more than 1 inch long ... 

 Petals less than | inch long ... 



10. Stems more than 1 ft. long 

 Stems none or very short 



11. Leaves distichous 

 Leaves not distichous ... 



.2. Lip not spurred... 

 Lip spurred 



13. Lip clawed 

 Lip sessile 



14. Sepals united ... 

 Sepals free 



15. Lip clawed 

 Lip sessile 



16. Column with 2 processes descending 



into the spur 

 Column without 2 processes descending 

 into the spur 



17. Lip not spurred 

 Lip spurred 



18. Flowers arranged into a distinct spiral 

 Flowers not arranged in a spiral 



19. Petals 1 inch long 



Petals less than 1 inch long 



20. Leaves radical 



Leaves cauline ... 



21. Petals 2i lines long 



Petals I inch long 



22. Spur vesicular ... 



Spur not vesicular 



23. Lip equally 3-lobed ... 



Lip unequally 3-lobed 



24. Plant with evergreen stems or leaves, 



or both 

 Plant with deciduous stems and leaves 



25. Plant with distinct false bulbs 

 Plant without distinct false bulbs 



26. Leaves large, over 6 inches long 

 Leaves under 6 inches long ... 



27. Sepals and petals 2 inches long 

 Sepals and petals under 2 inches 



28. Leaves several .. . 

 Leaf one 



29. Inflorescence umbellate or 

 Inflorescence not umbellate ... 



30. Plant minute 

 Plant not minute 



31 . Sepals nearly equal ; inflorescence some- 



times 1-flowered ... 

 Dorsal sepal much shorter than the 

 lateral 



32. Leaf one 



Leaves more tbw one .. . ... ,., 



21515 



long 



1-flowered 



10. 



11. 

 16. Arundina. 

 4:4:. Paphiopedilum. 

 26. Appendicula, 

 36. Goodyera, etc. 



13. 



15. 



35. Haemaria. 



14. 

 34. Cheirostylis. 



36. Goodyera. 



31. Anoectochilus. 



16. 



32. Vrydagzynia. 

 30, Phystirus. 



is. 



22. 



29. Spiraiithes. 



19. 

 10. Bletia. 



20. 

 42. Hahenaria. 



21. 



33. Zeuxine. 



39. Pogonia. 



23. 



42. Hahenaria. 



43. Glossula, 



40. Peristylus. 



25. 



46. 



26. 



35. 



27. 



29. 

 9. Phaius. 



28. 

 15. Calanthe. 

 12. Tainia. 



30. 



32. 

 6. Eria. 



31. 



4. Bulbophylhim. 



5. Cirrhopetalum. 



33. 



6. Eria. 



