'calyxless' originates from the Greek word 'kalyx,' meaning 'bud' or 'husk,' combined with the English suffix '-less,' indicating absence.

'kalyx' transformed into the Latin word 'calyx,' and eventually became the modern English word 'calyx' through Middle English, with 'calyxless' forming by adding the suffix '-less.'

Initially, 'calyx' referred to the protective covering of a flower bud, and 'calyxless' evolved to describe the absence of this feature.