Lowland evergreen guyanan forest and savanna geocomplex. 1. Evergreen seasonal sclerophyllous woodland-savanna: Platycarpum orinocense-Vochysia venezuelensis communities. Moderately deep and medium drained woodland on sandy-lateritic soils 2. Successional pyrophytic-oligotrophic open woodland-savanna: Byrsonima crassifolia-Curatella americana communities with herbaceous savanna: Axonopus purpusi – Paspalum pectinatum communities and Trachypogon plumosus-Schyzachirium sanguineum communities, with Thrasya petrosa, Trachypogon vestitus. Pisolitic-lateritic medium-well drained soils, with eolic sandy or loessic cover 3. Seasonally flooded oligotrophic open herbaceous savanna: Schizachyrium brevifolium-Trachypogon spicatus and Andropogon leucostachyus-Sorghastrum setosum communities. 4. Palm-forest: Euterpe precatoria-Mauritia flexuosa communities. Lentic streams and topographic depressions permanently flooded by dystrophic black water. 5. Aquatic vegetation of lakes and swamps. 6. Flooded evergreen forest: Lecythis ollaria-Eschweilera tenuifolia-Macrolobium multijugum communities with Campsiandra implexicaulis, C. macrocarpa. Evergreen forest on alluvial floodplain of clear water rivers. 7. Clear water riparian palm-woodland: Mauritiella armata communities. 8. Saxicolous vegetation: Vellozia tubiflora communities. Precambrian domed rocky outcrops (inselbergs). 9. Semideciduous forest: Vochysia venezuelense-Anadenanthera peregrina communities with Caraipa llanorum, Hymenaea courbaril, Myroxylon balsamum, etc. Sandy excessively well drained soils on low hillsides and basis of inselberg. 10. Evergreen western guyanan forest: Ruizterania retusa-Chaetocarpus schomburgkianus communities. Deep well-drained lateritic soils above shield crystalline rocks. Graphic geobotanical interpretation based on cited references, our own field data (Cinaruco river to Puerto Ayacucho transect) 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