Rhombophyllum is a genus of succulent plants in the ice plant family, Aizoaceae. Members of the genus are native to the Cape Provinces of South Africa.

Species Five species are accepted. Rhombophyllum albanense (L.Bolus) H.E.K.Hartmann Rhombophyllum dolabriforme Schwantes Rhombophyllum dyeri (L.Bolus) H.E.K.Hartmann Rhombophyllum nelii Schwantes Rhombophyllum rhomboideum (Salm-Dyck) Schwantes

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