Research news on Alismatales (order)

Alismatales is an order of monocotyledonous flowering plants within the clade Alismatidae, encompassing predominantly herbaceous, often aquatic or semi-aquatic species. It includes families such as Alismataceae, Hydrocharitaceae, and Araceae, characterized by features like basal or rosette-forming leaves, aerenchymatous tissues facilitating buoyancy and gas exchange, and frequently reduced or specialized floral structures adapted to hydrophily or emergent pollination strategies. Members exhibit diverse vegetative morphologies, from submerged linear leaves to broad emergent blades, and often possess rhizomatous or stoloniferous growth enabling clonal propagation. Alismatales is notable in evolutionary studies for multiple independent adaptations to freshwater and marine environments among angiosperms.