Annonaceae - Flora of Guyana, Suriname and French Guiana - Grand Format

Paul Maas is a plant taxonomist over more than 50 years. During most of his career he worked in the Utrecht Institute of Systematic Botany (U), an Institute specialized in the flora of tropical America (the Neotropics). During that period he traveled all over the Neotropics studying in the field several plant families such as Annonaceae and Costaceae. In cooperation with various Utrecht graduate students and scientists from all over the world he also worked and is still working on various mycoheterotrophic ("saprophytic") plant families such as Burmanniaceae.
He is currently completing an update of his 1972 Flora Neotropica Monograph of Costaceae. Lubbert Westra is a plant taxonomist, who worked for the largest part of his career in the Utrecht Institute of Systematic Botany (U). He is participating in the research on the family of Annonaceae, a multidisciplinary project started in Utrecht almost 40 years ago. He is one of the co-authors in the Flora Neotropica Monographs of the genera Duguetia and Rollinia and published revisions of the genera Raimondia (now included in Annona) and Tetrameranthus.
Heimo Rainer is a plant taxonomist with special interest in Annonaceae and historical Botany. Since the mid 1990ies he is working on a monograph of the genus Annona. He did intensive field work all over the Neotropics. He worked for 21 years at the University of Vienna as Data Manager in the Herbarium (WU), and currently is interim head of the botanical department of the "Naturhistorisches Museum Wien" (W) at Vienna.
Uwe Scharf studied Terrestrial Ecology at the university in Halle (Germany) and is a specialist of plant ecology, morphology and taxonomy. He contributed to the project "The genus Guatteria in the Guianas" at the Herbarium of Utrecht University (U). Hereafter, he was involved in the publication of a row of new species in the family of Bromeliaceae and worked for a journal in this family. Recently centered at the Potsdam University, he is conducting ecological research and taxonomy in the genus Sansevieria (Dracaenaceae).