Ixia polystachya var. lutea
Ixia elegans Ixia serotina Watsonia campanulata Wuerthia elegans Ixia viridiflora var. caesia Ixia aristata var. elegans Ixia polystachya var. crassifolia Ixia erecta Ixia hybrida Ixia maculata var. caesia
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024