Annonaceae

Paul J.M. Maas is a plant taxonomist for over 50 years. For most of his career he worked in the Utrecht Institute of Systematic Botany (U), specialized in the flora of tropical America (the Neotropics). He traveled all over the Neotropics to study in the field several plant families such as Annonaceae and Costaceae.

Lubbert Y.Th. Westra is a plant taxonomist, who worked for the largest part of his career in the Utrecht Institute of Systematic Botany (U). He is involved in the research on the family of Annonaceae, a multidisciplinary project started in Utrecht almost 40 years ago.

Heimo Rainer is a plant taxonomist with a special interest in Annonaceae and historical Botany. Since the mid-1990s he is working on a monograph of the genus Annona. He did intensive field work all over the Neotropics.

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), presently transferred to Leiden. He is currently based at Potsdam University.

Hiltje Maas-van de Kamer has worked as a plant taxonomist in close cooperation with her husband Paul Maas on various Neotropical plant families. One of her specialities is the family of Cannaceae, for which she published, with Paul Maas, a worldwide monograph in 2008.

Roy H.J. Erkens is a botanist interested in the evolution of plant biodiversity. He studied biology at Utrecht University and obtained his PhD in 2007 while working at the Utrecht Herbarium (U). He is currently associate professor in plant evolutionary biology at Maastricht University.

Tinde van Andel is a tropical ecologist who became interested in the use of non-timber forest products by Carib, Arawak and Warao Indians in Guyana then in the Caribbean and in West and Central Africa. She currently teaches Ethnobotany at the Wageningen University and studies historic plant collections in Leiden.

Susana Arias Guerrero is a plant taxonomist, who started to study biology in Granada, then continued her career in the Leiden Herbarium (L), working on the families of Euphorbiaceae and Annonaceae. Since the beginning of 2023, she has been a Collection Manager of the Naturalis Biodiversity Center, Section Botany (L).