Coalescent cavities: a novel process of secretary duct formation in theobroma L. (Malvaceae) - Garcia, Tarcymara Barata; Costa, Ellenhise Ribeiro; Kikuchi, Tatiani Yuriko Souza; Aguiar-Dias, Ana Cristina Andrade de; Demarco, Diego (Plant Ontogeny: studies, analyses and evolutionary implications. Diego Demarco (ed), 2020)