Microescultura da superfície de sementes para distinguir Eichhornia azurea e E. crassipes (Pontederiaceae) do Pantanal

Eichhornia azurea and E. crassipes are morphologically easy to distinguish, however, their seeds similar differentiated only by size, which makes identification difficult, especially when collected directly from the seedbank. We identified characters for distinguish of these species through macrosculpture analyzes seed coat (size, shape, epidermal pattern, structure primary secondary microsculpture, funiculum, hilum, micropyle, raphe), using scanning electron microscopy. The differ mainly sculpture with perforated in wrinkled micropapillae crassipes; external tissue smooth aspect irregularly raphide crystals crassipes. Our results contribute taxonomy tribe Eichhornieae future studies on microsculpture macrophytes coat, a comparative approach understand ecological evolutionary aspects.