'typical-flowered' is a compound of 'typical' (originating from Greek via Latin/Medieval Latin) and 'flowered' (from Old English 'flōwer'/'flōwr', ultimately from Proto-Germanic). 'typical' comes from Greek 'typikos' via Latin 'typicus', where 'typos' meant 'impression, model'; 'flower(ed)' comes from Old English 'flōwer', where the root referred to 'blossom'.

'typical' passed into Medieval and Modern English from Latin/Old French forms derived from Greek 'typikos', while 'flower' developed from Old English 'flōwer' (from Proto-Germanic *blōmô); the compound 'typical-flowered' is a modern English descriptive formation combining these elements.

Individually, 'typical' initially carried senses of 'model' or 'representative', and 'flower(ed)' has long meant 'having blossoms'; together the phrase has come to mean 'having the model or usual form of flowers for the taxon', a usage confined mainly to descriptive/botanical contexts.