title: [Reproductive structures of Piper amalago var. medium Linnaeus (Piperaceae)].
abstract: Flowers, fruits, seeds and subterranean organ of Piper amalago var. medium Linnaeus were analyzed structurally. Flowers are hermaphrodite lacking perianth, with two stamens and a tricarpelate gynoecea. Tetrasporangiate anthers shows epidermis, endothecium, one or two middle layers and secretory tapetum. Ovary has a simple structure, with ventral meristem. There is one orthotropous, bitegmic and crassinucellate ovule. Fruits are drupes. Seeds are endotegmic with copious perisperm. Putamen is composed of a sclerified inner mesocarp and endocarp. Individuals of the species can be interlinked by radicular subterranean organ, that can spread vegetatively.
authors.affiliation: Departamento de Biologia, Universidade Estadual de Maringá, A Paraná, Brasil.
authors.forename: Sônia M
authors.initials: SM
authors.lastname: da Rosa
authors.forename: Luiz A
authors.initials: LA
authors.lastname: de Souza
mesh_terms: D035264:Flowers / Q000033:anatomy & histology* / Q000502:physiology; D005638:Fruit / Q000033:anatomy & histology* / Q000502:physiology; D018525:Germination / Q000502:physiology; D031701:Piper / Q000033:anatomy & histology* / Q000502:physiology; D012098:Reproduction / Q000502:physiology; D012639:Seeds / Q000033:anatomy & histology / Q000502:physiology