'rotundifolius' originates from New Latin (botanical Latin), ultimately from Latin 'rotundus' meaning 'round' and 'folium' meaning 'leaf' (with the adjectival ending '-us').

'rotundifolius' was formed in post-classical/medieval Latinate botanical usage by combining Latin 'rotundus' + 'folium' into the adjectival epithet 'rotundifolius' used in species names.

Initially it literally meant 'round-leaved' in Latin; in botanical usage the meaning has remained stable as an epithet describing leaf shape ('with round leaves').