Distribution : Sumatra, Java and Borneo in primary forest and humid places, between 600 - 2000m above sea level.

Pseudobulbs placed 3cm or more apart on the creeping rhizome, 3-4 x 2.5cm, smooth an round when young, slightly flattened.

Leaves broadly lanceolate, 20-25 x 6-12cm.

Inflorescences arising from the rhizome, penducle and pedicel together 20cm or more long, each bearing single flower.

Flowers 6 - 8cm broad, yellow, striped and flushed red 

Note This species varies very much throughout its range, in particular in coloring and the petal length.