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Paxia Herter 1931,
illegitimate homonym, not Gilg. 1891 (Connaraceae) nor Ö.Nilsson 1966 (Montiaceae)
Paxiuscula Herter Serophyton Benth.
Stenonia Didr....
- (also Argithamnia, Argothamnia, Argyrothamnia, Argytamnia, Odotalon,
Serophyton)
Caperonia (also Acanthopyxis, Androphoranthus, Cavanilla, Lepidococea...