Located in the southeastern half of Venezuela, the Venezuelan Guayana is the core area of what has been called "The Lost World." It is home to nearly 10,000 species of vascular plants, including many endemic species and genera. The Flora of the Venezuelan Guayana is the first full scientific account of the plants of the region. This volume continues the treatment of the Spermatophyte families alphabetically from Eriocaulaceae through Lentibulariaceae, a total of 29 families.

Located in the southeastern half of Venezuela, the Venezuelan Guayana is the core area of what has been called "The Lost World." It is home to nearly 10,000 species of vascular plants, including many endemic species and genera. The Flora of the Venezuelan Guayana is the first full scientific account of the plants of the region. This volume continues the alphabetical sequence of family treatments, from Araliaceae to Cactaceae. Includes keys, descriptions, and illustrations of more than half the species treated.

Introduction. 1. Geographical and physical features: geology - geomorphology - soils - climate - paleoecology - hydrography - physiography and landscapes - human populations. 2. History of botanical exploration: pioneer explorations in the Guayana Lowlands (1754-1951) - initial explorations of Pantepui (1838-1960) - modern explorations in the Venezuelan Guayana (late 1900s). 3. Vegetation: previous vegetation studies and maps - system of vegetation classification - forest formations - shrub formations - herbaceous formations pioneer formations - aquatic vegetation. 4. Floristic analysis and phytogeography: species numbers and composition - levels of endemism - floristic relationships - phytogeography of the Guayana region. 5. Conservetion of the Venezuelan Guayana: protected areas - other special management areas - threats to conservation. Apendix A: vascular plant families of the Venezuelan Guayana. Apendix B: key to the families of Spermatophytes in the Venezuelan Guayana.