This might not be considered a
caudiciform, but here it is anyway:
This epiphytic member of the
Orchidaceae family was described by Joseph Dalton Hooker in
1890. It is found in Indonesia, Malaysia and Singapore, growing in
old secondary forest with lots of water and little sun. The bulbs
will grow to 2,3 centimetres in diameter, the leaves to 18
centimetres length. The flowers are light yellow.