Tetragonotheca

Tetragonotheca is a genus of North American plants in the family Asteraceae. Nerveray is a common name for plants in this genus.

see Guizotia Rumfordia
 * Species
 * Tetragonotheca helianthoides L. - MS AL GA FL NC SC TN VA
 * Tetragonotheca ludoviciana (Torr. & A.Gray) A.Gray ex E.Hall - TX LA AR
 * Tetragonotheca parviflora Jacq. - West Indies
 * Tetragonotheca repanda (Buckley) Small - TX
 * Tetragonotheca texana Engelm. & A.Gray ex A.Gray & Engelm. - TX, Coahuila, Nuevo León, Tamaulipas, Jalisco, Colima
 * formerly included
 * Tetragonotheca abyssinica - Guizotia abyssinica
 * Tetragonotheca guatemalensis - Rumfordia guatemalensis