Lowland seasonal evergreen forest geocomplex. 1. Evergreen seasonal preandean-subandean forest: Pentaplaris davidsmithii-Quararibea wittii community. Low mountain ranges of the sub-Andean region. 2. Evergreen seasonal piedmont forest: Quararibea wittii-Dypterix odorata community. Amazonian eastern andean glacis. 3. Evergreen seasonal hill forest: Phytelephas macrocarpa-Tachigali vasquezi community. Western Amazonian preandean hills with sandy soils. 4. Evergreen seasonal peneplain forest: Apuleia leiocarpa-Bertholletia excelsa community. Ondulated lateritic Amazonian peneplains on tertiary materials. 5. Flooded riparian forest & woodland: Symphonia globulifera-Cariniana domestica community. Clear water stream banks (Lotic), semipermanently flooded. 6. Palm swamp-forest: Macrolobium acaciifolium-Mauritia flexuosa community. Black water streams and ponds (lentic) permanently flooded. 7. Evergreen seasonal sclerophyllous woodland (“Amazonian Caatinga”): Qualea albiflora-Cariniana domestica communities. Seasonally ponded in depressed flat paleochannels with sandy quartz sediments and poorly drained oligotrophic-podsolized soils. 8. Evergreen seasonal precambrian shield forest: Attalea speciosa-Peltogyne heterophylla community. Amazonian precambrian shield (gneisitic and granitic).9. Saxicolous-fissuricole vegetation: Monvillea kroenleinii-Cyrtopodium paranaense community. Precambrian crystalline rocky outcrops. Graphic interpretation based on our own field data, cited references, and Google Earth images.