Had a google and found this
Temperate
pH range: 7.2 - 8.5
Temperature range: 18 - 25C
Water hardness: 80 - 150 ppm
Availability: Hard to find
Propagation: Once growing plants acclimatize quickly underwater but are slow growing when emersed.
Habitat:
Native to Malaya.Has 20 to 30 variegated leaves originating from a rhizome which produces a cluster of whitish bulblets (as illustrated). Leaves are up to 30cm with yellow margins. Shoots or suckers can be detached from base stock & planted out. Effective only in emersed cultivation. Will not tolerate new water.