Scorpiothyrsus tetrandrus Nayar Kerriothyrsus is a monotypic genus of flowering plants belonging to the family Melastomataceae.

[1] The only species is Kerriothyrsus tetrandrus (Nayar) C.Hansen[2] Its native range is Indo-China.

[2] The genus name of Kerriothyrsus is in honour of Arthur Francis George Kerr (1877–1942), an Irish medical doctor.

[3] The Latin specific epithet of tetrandrus which is derived from a compound of 2 roots; tetra from the Greek τετρα meaning four and also andros meaning anthered (having anthers).

[4] Both genus and species were first described and published in Willdenowia Vol.17 on page 154 in 1988.