Mesembryanthemum purpureoalbum Cephalophyllum aurantiacum Cephalophyllum gracile Cephalophyllum gracile var. longisepalum Cephalophyllum littlewoodii Cephalophyllum middlemostii Cephalophyllum paucifolium Cephalophyllum serrulatum Cephalophyllum worcesterense
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024