Almost all the larger genera of samara-producing vines contain one or more species in which the samaras have had the principal wing(s) reduced or lost, often augmented by new supernumerary winglets or various kinds of aerenchyma or air-filled chambers.
Then there are the vines and shrubs
(e.g., Diplopterys) in which the large wings of the ancestral samaras have been replaced by crests and ruffles that probably help the mericarps float by increasing the surface area and trapping air.
Burdachia and Glandonia are sister genera of trees, in both of which the fruit is a relatively large, indehiscent, corky or fibrous nut, beautifully adapted for dispersal by water; all their species grow in lowland forests near water.
In areas with many rivers, like the Amazon, dispersal by water is common, both as the ancestral method and as a secondary adaptation, in plants whose relatives are dispersed by wind. Lophanthera is a genus of riparian trees in which the schizocarpic fruit breaks apart into small dry unwinged cocci half-filled with aerenchyma.