'anthered' originates from English, specifically from the noun 'anther' (from New Latin 'anthera'), where the Greek root 'anthos' meant 'flower' (and 'anthēra' referred to the anther).

'anthered' developed by adding the English adjectival/past-participial suffix '-ed' to the noun 'anther' (New Latin 'anthera' ← Greek 'anthēra' ← 'anthos'), producing the modern adjective meaning 'bearing anthers'.

Initially the root referred to the 'flower' or specifically the 'anther' part; over time the derived adjective came to mean 'having or bearing anthers' in botanical usage.