Diplopappus asper Aster grauii Aster bakerianus subsp. angustifolius Aster bakerianus subsp. septentrionalis Aster bakerianus subsp. ovalis Diplopappus asper var. asper Diplopappus natalensis Aster asper Aster bakerianus subsp. intermedius Aster bakerianus subsp. albiflorus Aster bakerianus subsp. bakerianus Calendula hispida
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024