Flórula das angiospermas aquáticas e palustres do grupo asterales (Euasterideas II) ocorrentes na Universidade Federal do Recôncavo da Bahia, Cruz das Almas, BA

Abstract

The Asterales group includes about twelve families and approximately 24.900 species. This group is recognized by the following synapomorphies: use of oligosaccharide inulin on nutrient storage and stamens densely aggregated around the carpel or fused into a tube around the style. In general, there is a lack of taxonomic work about aquatic plants, principally in Northeast of Brazil. This may be explained by the difficulty in identifying aquatic plants, because of the great phenotypic plasticity, the presence of ephemeral or inconspicuous floral structures, or by the predominance of asexual reproduction. Therefore, the present work aims to contribute to scientific knowledge of botany in the Northeast, especially in the region of Cruz das Almas, Bahia, by presenting data in accordance with the current phylogenetic classification of angiosperms. To accomplish this goal, we performed a survey of species of waterfowl and marsh angiosperms of the group Asterales that occur at the Universidade Federal do Recôncavo da Bahia. The botanical material were collected from 2008 to 2010, encompassing all the aquatics areas in the region. Twelve species of Asteraceae and only one specie of the Menyanthaceae. Our data were helpful to prepared a glossary of botanical terms in order to share this knowledge with admires lay of botany. Besides the botanical descriptions of all species, we also provided their popular names, folkways and illustrations, as well the habitats.