Tristicha

Tristicha trifaria is a species of flowering plant belonging to the family Podostemaceae. It is the sole species in genus Tristicha. It is an aquatic subshrub native to the tropical and subtropical Americas, Africa, Thailand, Peninsular Malaysia, and northwestern Australia.

Subspecies
Three subspecies are accepted.
 * Tristicha trifaria subsp. pulchella (Wedd.) C.Cusset & G.Cusset – Ivory Coast, Nigeria, Chad, Sudan, and southern Egypt
 * Tristicha trifaria subsp. tlatlayana (Matuda) C.Cusset & G.Cusset – central Mexico
 * Tristicha trifaria subsp. trifaria – northeastern Mexico to Northeastern Argentina; sub-Saharan Africa and Madagascar; Thailand and Peninsular Malaysia; Northern Territory and Western Australia