'uniflorous' originates from Latin, specifically the word 'uniflorus', where the prefix 'uni-' meant 'one' and 'florus' (from 'flos') related to 'flower'.

'uniflorus' was used in Latin botanical or descriptive contexts and passed into New Latin/scientific usage; it was later adopted into English as the adjective 'uniflorous' (chiefly in botanical descriptions).

Initially it meant 'having a single flower' in Latin descriptive use, and over time it has retained that specialized botanical meaning in modern English.