SECTION Intervallatae Ridley 1897

LECTOTYPE SPECIES = Bulbophyllum attenuatum Rolfe 1896

Synonyms sect. Dialeipanthe Schlechter 1913

Characterized by hardly visible to not very well developed pseudobulbs giving rise to short to long, wiry inflorescence with successive racemes at the apex and carrying distichous, resupinate, successively single flowers. The basal node of the pedicel is above the attachment of the amplexicaul, often proximally tubular floral bracts. The lip is rather flat and quite smooth and the stelida of the column are short or reduced to small teeth

There are about 44 species in this section from forests to elevations up to 1400 meters in penninsular Malaysia, Sumatra, Borneo, Sulawesi, the Philippines, New Guinea and the western Pacific islands.

Entries below with an asterix are listed in publications by J J Vermeullen and so are more likely correct than ones without. Species with a question mark in front, seem to me to not conform and so please use with caution.

1. Bulbophyllum adolphii Schltr. 1921 - Papua New Guinea

2. *Bulbophyllum andreeae A.D.Hawkes 1956 New Guinea, Sulawesi

3. Bulbophyllum asperilingue Schltr. 1919 - Papua New Guinea

4. *!Bulbophyllum attenuatum Rolfe 1896 Borneo

5. Bulbophyllum caloglossum Schltr. 1913 Papua and New Guinea

6. *Bulbophyllum cleistogamum Ridl. 1895 Pennisular Malaysia, Borneo, Sulawesi, and the Luzon province of the Philippines

7. Bulbophyllum crenilabium W. Kittr 1985-6 New Guinea

8. Bulbophyllum crocodilus J.J.Sm. 1912 western New Guinea

9. Bulbophyllum digoelense J.J. Sm. 1911 Papua and New Guinea

10. Bulbophyllum distichum Schltr. 1913 New Guinea

11. Bulbophyllum elasmatopus Schltr. 1905 New Guinea

12. Bulbophyllum falcibracteum Schltr. 1923 - Papua New Guinea

13. Bulbophyllum foetidilabrum Ormerod 2001 - Bismarck Archipelago

14. Bulbophyllum guamense Ames 1914 Guam

15. Bulbophyllum hamadryas Schltr. 1913 New Guinea

16. Bulbophyllum linggense J.J.Sm. 1922 Sumatra

17. Bulbophyllum ligulifolium J.J.Sm. 1934 western New Guinea

18. Bulbophyllum longiscapum Rolfe 1896 Papua New Guinea, the Solomon Islands to Tonga, Fiji, Vanuatu and Samoa

19. Bulbophyllum lumbriciforme J.J.Sm. 1920 Sumatra and Malaysia

20. *Bulbophyllum macrochilum Rolfe 1896 Malaysia, Singapore and Borneo

21. Bulbophyllum mamberamense J.J.Sm. 1915 western New Guinea

22. Bulbophyllum mayrii J.J.Sm. 1934 western New Guinea

23. Bulbophyllum orsidice Ridl. 1916 western New Guinea

24. Bulbophyllum papilio J.J.Sm. 1910 New Guinea

25. Bulbophyllum pardalinum Ridl. 1916 waestern New Guinea

26. Bulbophyllum pristis J.J.Sm. 1913 New Guinea

27. Bulbophyllum rigidipes Schltr. 1905 New Guinea

28. Bulbophyllum rubrolineatum Schltr. 1923 - Papua New Guinea

29. Bulbophyllum sarcodanthum Schltr. 1913 Papua New Guinea

30. Bulbophyllum salebrosum J.J.Smith 1927 Sumatra

31. Bulbophyllum scrobiculilabre J.J.Sm.1914 Papua and New Guinea

32. Bulbophyllum semiasperum J.J.Sm. 1934 western New Guinea

33. Bulbophyllum sepikense W.Kittr. 1984 publ. 1985 - Papua New Guinea

34. Bulbophyllum septemtrionale J.J. Sm. 1913 Papua and New Guinea

35. Bulbophyllum serra Schltr. 1913 Papua and New Guinea

36. Bulbophyllum serripetalum Schltr. 1923 - See Papua New Guinea

37. Bulbophyllum spathilingue J.J.Sm. 1908 New Guinea

38. Bulbophyllum sp. New Guinea

39. Bulbophyllum sp.

40. Bulbophyllum sp. 74

    Bulbophyllum sp.77

41. Bulbophyllum sp 78 Philippines?

42. *Bulbophyllum tardeflorens Ridley May 1896 Borneo

43. Bulbophyllum tenuipes Schltr. 1913 New Guinea

44. Bulbophyllum teretilabre J.J.Sm. 1913 western New Guinea

45. Bulbophyllum theunissenii J.J.Sm. 1920 Sumatra

46. Bulbophyllum thrixspermiflorum J.J.Sm. 1908 western New Guinea

47. Bulbophyllum thrixspermoides J.J.Sm. 1912

48. !Bulbophyllum verruciferum Schltr. 1913

    References W3 Tropicos, Kew Monocot list , IPNI ; *Thirty Two New Species of Bulbophyllum (Orchidaceae)from Sulawesi J.J. VERMEULEN 1 AND P. O’BYRNE Gard. Bulletin Singapore 60 (1): 73-153 2008; Genera Orchidacearum Vol 6 Epidendroideae Pt 3 Pridgeon, Cribb Chase & Ramussen 2014;