ABSTRACT
Most nouns, adjectives, and pronouns in Spanish are obligatorily marked with gender suffixes and can be marked with plural suffixes. Each of these suffixes appears to take various forms or allomorphs: [-s, -es, ⊘] for the plural, and [-o, -a, -Vs, -u, -i, -s, -e, ⊘] for gender/class markers. The goal of an account of allomorphy is to distinguish between what must be stored as lexical information and what can be predicted, based on stored phonological, morphological, or semantic information. This chapter reviews several distinct approaches to that goal for plurals, genders/classes, and both together. I argue for a limited role for epenthesis in plural formation in order to streamline the classes required for allomorphy and to reassign some information from stored allormorphy to predictable phonology.
