Pollination is by flies attracted by the disgusting smell. Extremely rare in cultivation. Thick ovate to elliptic leaves . Yellow spotted Petals with red lips. The amount of crimson spotting varies greatly according to location.
Flowers have a peculiar 'animal' smell which attracts a type of hover fly.
Flowers white with orange tip and orange lip. Two flowers positioned 90 degrees from one another, pink with small red dots with protruding white whiskers. Distribution in Java and Sumatra only. Flowers emerging from rhizome held singly. Lip long shaped like a thick tongue heavily speckled red in the basal half.