Abstract

This paper presents an analysis of initial consonant mutation in a Breton dialect, with a focus on establishing the division of labour between phonology and morphology in the triggering of mutation and its phonological expression. It is argued that different types of mutation have different status in the grammar: some are purely phonological, others involve subsegmental morphemes with a clear morphosyntactic rationale, and for some the phonological aspects are clear but the morphosyntactic motivation remains obscure. In addition, the differences among the types of mutation support a stratal model of morphology-phonology interaction.