Bulbophyllum sulcatum (Blume) Lindl., 1830

Section : Desmosanthes

Homotypic Synonyms:
Diphyes sulcata Blume, Bijdr.: 314 (1825).
Bulbophyllum sulcatum (Blume) Lindl., Gen. Sp. Orchid. Pl.: 57 (1830).
Phyllorkis sulcata (Blume) Kuntze, Revis. Gen. Pl. 2: 678 (1891).

Collected by Mr. Azman Bainuri from Taba Baru, Belalau, Lubuk Linggau Utara I, South Sumatra. Flowering in situ on 25 January 2013.

Flowers can be 5  florii (Blume)

Flowers usually 3 florii (Lindley) 

Bulbophyllum sulcatum (Blume) Lindl.

Bulbis ovatis oblongis

Floribus pallide flavescentibus

Plant

In situ at Belalau, Lubuk Linggau

Data : 
Pseudobulbd : c. 1 cm long by c. 5 mm broad
Leaves : c. 4 cm long by 7 mm broad
Dorsal sepal : 2 mm
Stalk bearing 4 flowers, seldom 3 flowers

Basionym
Diphyes sulcata Blume, Bijdr.: 314 (1825). 

Bulbophyllum sulcatum (Blume) Lindl., Gen. Sp. Orchid. Pl.: 57 (1830). 

Distribution:
W. Malesia and Bali
42 JAW LSI SUM


Lifeform:
Pseudobulb epiphyte


Note :
Blume said this species have 5 flowers, but Lindley said have 3 flowers. I think the flowers range between 3-5 flowers.