'allagophyllous' originates from Greek, specifically the word 'allagophullos,' where 'allago-' meant 'change' and 'phullon' meant 'leaf.'

'allagophyllous' changed from the Greek word 'allagophullos' and eventually became the modern English word 'allagophyllous'.

Initially, it meant 'having leaves that change,' but over time it evolved into its current meaning of 'having leaves that are different in form or size.'