''Calamus thwaitesii'' is a species of rattan palm in the family

Arecaceae The Arecaceae () is a family (biology), family of perennial plant, perennial, flowering plants in the Monocotyledon, monocot order Arecales. Their growth form can be climbing palm, climbers, shrubs, tree-like and stemless plants, all commonly k ...

. It is native to Southwest India and Sri Lanka.

References

thwaitesii Flora of India (region) {{Palm-stub