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 andreeae A.D.Hawkes 1956 New Guinea, Sulawesi

  2. *!Bulbophyllum attenuatum Rolfe 1896 Borneo

  3. Bulbophyllum caloglossum Schltr. 1913 Papua and New Guinea

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

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

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

  7. Bulbophyllum distichum Schltr. 1913 New Guinea

  8. Bulbophyllum elasmatopus Schltr. 1905 New Guinea

  9. Bulbophyllum guamense Ames 1914 Guam

  10. Bulbophyllum hamadryas Schltr. 1913 New Guinea

  11. Bulbophyllum linggense J.J.Sm. 1922 Sumatra

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

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

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

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

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

  17. Bulbophyllum rigidipes Schltr. 1905 New Guinea

  18. Bulbophyllum salebrosum J.J.Smith 1927 Sumatra

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

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

  21. Bulbophyllum serra Schltr. 1913 Papua and New Guinea

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

  23. Bulbophyllum sp. New Guinea

  24. Bulbophyllum sp.

  25. Bulbophyllum sp. 74

    Bulbophyllum sp.77

  26. Bulbophyllum sp 78 Philippines?

  27. *Bulbophyllum tardeflorens Ridley May 1896 Borneo

  28. Bulbophyllum tenuipes Schltr. 1913 New Guinea

  29. Bulbophyllum theunissenii J.J.Sm. 1920 Sumatra

    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;