Pierranthus

Pierranthus is a monotypic genus of flowering plants belonging to the family Linderniaceae. The only known species is Pierranthus capitatus.
Its native range is Indo-China and it is found in Cambodia, Thailand and Vietnam.
The genus name of Pierranthus is in honour of Jean Baptiste Louis Pierre, a French botanist known for his Asian studies. The genus has one known synonym of Delpya. The Latin specific epithet of capitatus is derived from capitate meaning having dense-headed growth. Both the genus and the species were first described and published in Bull. Soc. Bot. Genève, séries 2, Vol.4 n page 254 in 1912.