'uniform-leafed' originates from Modern English, specifically formed from the adjective 'uniform' and the noun 'leaf' plus the adjectival suffix '-ed', where 'uniform' meant 'one form' and 'leaf' meant 'leaf'.

'uniform' changed from Middle French 'uniforme' and ultimately from Latin 'uniformis' (uni- 'one' + formis 'form'); 'leaf' changed from Old English 'lēaf'. These elements were combined in Modern English to produce the compound adjective 'uniform-leafed'.

Initially, the components meant 'one form' (uniform) and 'leaf' (leaf); over time the compound evolved into the specific descriptive meaning 'having leaves of uniform form'.