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 is the first of the alphabetical sequence of family treatments, beginning with ferns and fern allies. Includes keys, descriptions, and illustrations of more than half the species treated.