Lowland seasonally flooded forest & shrubland geocomplex “várzea” A) Recent alluvial floodplain. Riverine beaches: 1. Riparian reed-grassland: Paspalum fasciculatum-Echinochloa polystachia community. Amazonian white-water riverine successional vegetation on seasonally flooded muddy substrates of the riverside-beaches. 2. Evergreen seasonal riparian thicket: Salix humboldtiana-Tessaria integrifolia community. Amazonian white-water riverine successional vegetation on seasonally flooded muddy substrates of fore-beaches. 3. Riparian cane-shrubland: Gynerium sagittatum communities. Amazonian white-water riverine successional vegetation on seasonally flooded sand-muddy substrates of fore-beaches. 4. Evergreen seasonal riparian woodland: Croton draconoides-Cecropia membranacea community. Seasonally flooded with white-water riverine successional vegetation on back-beaches. Meander floodplain: 5. Inmature riparian flooded forest: Guarea guidonia-Ficus insipida community. Seasonally white-water flooded with sand-muddy substrates and unstable soils of recent point-bars. 6. White-water Amazonian forbland: Heliconia marginata communities. Megaforb helophytic vegetation on seasonally flooded meander plain channels (active, semiactive and inactive). 7. Amazonian lacustrine custard-apple woodland: Alchornea castaneifolia-Annona hypoglauca community. Shores of ox-bow lakes and flooded paleochannel shores. 8. Amazonian aquatic vegetation: Nymphaea amazonum-Eicchornia azurea communities. Ox-bow lakes and ponds. 9. Mature flooded forest (“Fluvic Várzea forest”): Manilkara inundata-Pouteria bilocularis community. Meander floodplain levees and point-bars with white water regular flowing-floods on some stabilized soils. B) Old alluvial flood plain. 10. Flood-plain depressions: Backswamp forest (“Stagnic Várzea forest”): Calycophyllum spruceanum-Hura crepitans community with Attalea butyracea. Old alluvial floodplain with episodic white water stagnant floods. C) Upland (“Terra firme”). 11. Evergreen seasonal peneplain forest: Apuleia leiocarpa-Bertholletia excelsa community. Zonal mature southwestwen Amazonian Forest of ondulated lateritic upland peneplains on tertiary materials. Graphic geobotanical interpretation based on our own field data in Beni and high Madeira rivers, and Google Earth images.

  Part of: Navarro G, Luebert F, Molina JA (2023) South American terrestrial biomes as geocomplexes: a geobotanical landscape approach. Vegetation Classification and Survey 4: 75-114. https://doi.org/10.3897/VCS.96710