Abstract

This work presents the basics for interpreting the adult inflorescence structure in Cyperaceae. It provides an analysis of the variations of the synflorescence and inflorescence structure in the family. Three types of synflorescence may be recognized in this family: a synflorescence with a foliate stem, a terminal inflorescence and a variable number of lateral inflorescences; a synflorescence with a foliate stem and only the terminal inflorescence; and a synflorescence with a scape and a terminal inflorescence. Variations in the structure and form of the inflorescences are related to variations in inflorescence branching, inflorescence homogenization degree, presence or absence of the distal part of the inflorescence, phyllotaxis, inflorescence position, types of bracts and leaves subtending branches, elongation of inflorescence internodes and spikelet structure. These variations are correlated with some of the developmental processes that give origin to the inflorescence.

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