SECTION Macrocaulia (Bl.) Aver 1994

LECTOTYPE SPECIES: Diphyes ovalifolia Bl. = Bulbophyllum ovalifolium (Bl.) Lindl.

SYNONYMS - Diphyes sect. Macrocaulia Bl. 1825; SECTION Monilibulbus J.J.Sm. 1914 - SECTION Diasperia Bl. 1825 - SECTION. Odoardiana Pfitz. 1889

Vermuellen 2014 states that the plants are epiphytes with a creeping rhizome giving rise to shoots proximally fused to the pseudobulbs carrying a single, apical, usually persistent leaf that blooms on a single flowered inflorescence carrying resupinate flowers that have the pedicel basal node above the attachment of the floral bracts. Usually the dorsal sepal is free, has 3 to 5 veins and has entire to glabrous to erose to papillose margins, the laterals are 1 to 5 times as long as the dorsal sepal. The petals have 1 to 3 veins and the margins are entire to erose. The usually undivided, mobile lip is on a thin ligament, the column stigma is proximally protruding or not, the stelida are with or without a slight tooth along the upper and lower margins. The anterior surface of the anther is concave or not and the anterior margin is drawn out or not. There are 2 to 4 pollina with or without stipes.

Vermuellen etal 2015 state that the creeping, brittle rhizomes break off just in front of the part fused to or covered by the prostrate pseudobulb. The peduncle scales are all close to the base of the peduncle but in some species [B dransfieldii and B streptomorphum] the peduncle is so short that the character is not obvious. Usually the abaxial side of the lip does not have a groove over the median line, exeptions are B anisopterum, B streptomorphum, B longistellidum and B tristriatum.

There are more or less 68 species in this section from forests up to elevations of 2500 meters in India, China, Myanmar, Laos, Vietnam, Thailand, penninsular Malaysia, Sumatra, Java, Bali, Borneo, Sulawesi and the Philippines.

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 adjungens Seidenf. 1979 Thailand

  2. *Bulbophyllum alatum J.J.Verm. 1991 Sabah Borneo

  3. Bulbophyllum alboaligerum Cootes, Cabactulan, M.Leon & R.B.Pimentel 2018 Philippines

  4. *Bulbophyllum anguliferum Ames & C. Schweinf. 1920 Borneo

  5. *Bulbophyllum anisopterum J J Verm & O'byrne 2003 - Borneo

  6. *Bulbophyllum aschemon J.J.Verm. & A.L.Lamb 2008 Malaysia and Sarawak Borneo

  7. *Bulbophyllum auriculatum J.J.Verm. & P.O'Byrne 2003 Sulawesi

  8. Bulbophyllum tristriatum Carr 1930 Thailand, penninsular Malaysia and Sabah Borneo

  9. *Bulbophyllum bilobipetalum J.J.Sm. 1927 Kalimantan Borneo

  10. *Bulbophyllum biseriale Carr 1930 Thailand and Malaysia

  11. *Bulbophyllum calyptogyne J J Verm & O'Byrne 2011 - Sulawesi

  12. *Bulbophyllum carianum J J Verm. 2000 - Borneo

  13. *Bulbophyllum catenarium Ridl. 1894 Malaysia, Borneo and Vietnam

  14. *Bulbophyllum cernuum [Bl.]Lindl. 1830 Thailand, Borneo and Java

  15. *Bulbophyllum chanii J.J.Verm. & A.L.Lamb 1991 Sabah Borneo

  16. Bulbophyllum chlorascens J.J.Sm. 1927 Sumatra

  17. *Bulbophyllum coelochilum J.J.Verm.1991 Sabah Borneo

  18. Bulbophyllum connatum Carr 1933 Sumatra

  19. *Bulbophyllum corticola Schlechter 1010 - Borneo

  20. *Bulbophyllum dibothron J.J.Verm. & A.L.Lamb 1994 Sabah and Sarawak

  21. *Bulbophyllum dransfieldii J.J.Verm. 1991 - Borneo

  22. Bulbophyllum fulgens J.J.Verm. 1996 Sumatra

  23. Bulbophyllum gofferjeei J J Verm & Lamb 2013 Sabah Borneo

  24. Bulbophyllum hirsutum Lindl. 1830 Java

  25. Bulbophyllum hodgsonii M.R.Hend. 1927 Malaysia in the Cameron Highlands

  26. Bulbophyllum ignevenosum Carr 1930 penninsular Malaysia and Vietnam

  27. Bulbophyllum inaequale (Blume) Lindl. 1830 Java

  28. *Bulbophyllum jayii J J Verm & Lamb 2013 - Borneo

  29. *Bulbophyllum kestron J.J.Verm. & A.L.Lamb 1988 Sabah Borneo

  30. *Bulbophyllum koilobasis J J Verm., O'Byrne & Lamb 2015 - Borneo

  31. Bulbophyllum konstantinovii Aver. 2013 Cambodia

  32. *Bulbophyllum lacinulosum J J Sm. 1927 - Borneo

  33. *Bulbophyllum lambii J.J.Verm. 1991 Borneo

  34. *Bulbophyllum latisepalum Ames & C.Schweinf. 1920 Mt Kinabalu Borneo

  35. *Bulbophyllum leniae J.J.Verm. 1991 Borneo and Sulawesi

  36. *Bulbophyllum leproglossum J.J.Verm. & A.L.Lamb 1988 Borneo

  37. *Bulbophyllum longhutense J.J.Sm. 1931 Sabah and Kalimantan Borneo

  38. *Bulbophyllum longistelidium Ridl. 1924 penninsular Malaysia and Sabah Borneo

  39. Bulbophyllum lyciachungianum P.O'Byrne & Gokusing 2016 Borneo

  40. *Bulbophyllum malleolabrum Carr 1932 Malaysia, Borneo and Sulawesi

  41. Bulbophyllum menghaiense Z.H.Tsi 1981 Yunnan China

  42. Bulbophyllum mengyuanense Q.Liu, Jian W.Li & X.H.Jin 2015 Yunnan China

  43. *Bulbophyllum minutulum Ridl. ex Burkill & Holttum 1923 penninsular Malaysia and Borneo

  44. *Bulbophyllum montense Ridl. 1894 Borneo

  45. *Bulbophyllum muluense J.J.Wood 1984 Borneo

  46. *Bulbophyllum nubinatum J.J.Verm. 1988 - Borneo

  47. *Bulbophyllum odoardii Rchb.f & Pfitz 1885 - Borneo

  48. *!Bulbophyllum ovalifolium [Bl] Lindl. 1830 Chinese Himalayas, Thailand, Malaysia, Sumatra, Java, Borneo, lesser Sunda Islands and Sulawesi

  49. Bulbophyllum pan Ridl. 1915 penninsular Malaysia

  50. *Bulbophyllum pelicanopsis J.J.Verm. & A.L.Lamb 1988 Sabah Borneo

  51. Bulbophyllum pentaneurum Seidenf. 1979 Thailand

  52. Bulbophyllum perryi J.J.Verm. & Kindler 2015 Sumatra?

  53. Bulbophyllum phaeoneuron Schltr. 1911 Borneo

  54. *Bulbophyllum proculcastris J J Verm. 20000 - Borneo

  55. Bulbophyllum puntjakense J.J.Sm. 1907 Java, Borneo and the Lesser Sunda Islands

  56. *Bulbophyllum pyridion J.J.Verm. 1991 - Borneo

  57. Bulbophyllum remiferum Carr 1933 Sumatra

  58. *Bulbophyllum scabrum J.J.Verm. & A.L.Lamb 1988 Borneo

  59. *Bulbophyllum schefferi (Kuntze) Schltr. 1915 Java, Sumatra, Sabah, Kalimantan and Sarawak Borneo as well as the Philippines

  60. *Bulbophyllum similissimum J.J.Verm.1991 Borneo

  61. Bulbophyllum simplicilabellum Seidenf. 1979 Thailand

  62. Bulbophyllum stormii J.J. Sm. 1907 Malaysia, Sumatra and Borneo

  63. *Bulbophyllum streptomorphum J J Verm., O'Byrne and Lamb 2015 - Borneo

  64. Bulbophyllum subtenellum Seidenf. 1979 Thailand

  65. Bulbophyllum tekuense Carr 1930 penninsular Malaysia

  66. Bulbophyllum tenellum Lindl. 1830 Java

  67. Bulbophyllum thymophorum J.J.Verm.& A.L.Lamb 1988 Sabah Borneo

  68. Bulbophyllum titanea Ridl. 1908 penninsular Malaysia

  69. *Bulbophyllum torajarum J J Verm. & O'Byrne 2008 - Sulawesi

  70. *Bulbophyllum tristriatum Carr 1930 - Borneo

  71. *Bulbophyllum tubilabium J J Verm & Peter O'Byrne 2003 - Sulawesi

  72. *Bulbophyllum vestigipetalum J J Verm & Lamb 2013 - Borneo

    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; Flora of China 25: 404–440. 2009; Genera Orchidacearum Vol 6 Epidendroideae Pt 3 Pridgeon, Cribb Chase & Ramussen 2014;

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