A critical, illustrated Flora of Guyana, Suriname and French Guiana, designed to treat phanerogams as well as cryptogams of the area. Publication takes place in fascicles, each treating a family or group of related families. Treatments provide fundamental and applied information, covering, when possible, wood anatomy, chemical analysis, economic uses, vernacular names and data on endangered species. The Guyanan plant collections of Robert and Richard Schomburgk.