collective organ part structure pappus 2012-01-19T11:10:13Z A collective organ part structure that has a parts one or more pappus elements (scales, awns, or bristles) at the apex of an inferior ovary just beneath or outside the corolla. Found in flowers and fruits (cypsela) of the Asteraceae. May aid in dispersal by wind or animals. Considered by some to be an evolutionarily modified upper calyx portion, the lower portion having been incorporated into the floral tube casing adnate to the ovary wall; considered by others to be an outgrowth from the ovary wall. PO:0025393 PO_GIT:406 PlantSystematics_image_archive:14891 PlantSystematics_image_archive:8662 pappi (exact, plural) plant_anatomy rwalls 冠毛 (Japanese, exact)