The Tradescantia alliance (subtribes Tradescantiinae and Thyrsantheminae of tribe Tradescantieae, family Commelinaceae) comprises a group of closely related New World genera exhibiting considerable ...
The species of Xyridaceae are grouped into two subfamilies: Xyridoideae, which includes the genus Xyris, and Abolbodoideae, comprising the genera Abolboda, Achlyphila, Aratitiyopea and Orectanthe.