ABSTRACT:

Cryptocoryne wongsoi is described and illustrated as a new species from northwestern Sumatera, Indonesia. Cryptocoryne wongsoi differs from other species with similar leaves and habitat type by having a hispidulous lower leaf surface, a 15 – 25 cm long spathe with an upright backwards-bent limb which later becomes forward bent or obliquely spirally twisted; the kettle is cylindrical without a distinct narrowing of the inner wall; the chromosome number is 2n = 34.