a French botanist-pteridologist specializing in the study of pteridophytes in France, Europe, and the Guianas.
Spent 24 years working in French Guiana.
The author/co-author of nearly 150 publications on the pteridophytes of France and the Guianas, and co-author of several books (including: Ecological Atlas of Ferns and Allied Plants, 1990; Guide to Ferns and Allied Plants of France and Western Europe, 2002; Ferns and Allied Plants of Europe, 2021)
His name is associated, as an author, with the description of several hybrid taxa from Europe, Juan Fernandez (Chile), and, most importantly, several new species for the Guianas. He also participates in the revision of the taxonomic reference works for pteridophytes in France and the Guianas.
He is a member of the Botanical Society of France (SBF) and several other French and international botanical societies, and has been a corresponding member of the National Museum of Natural History in Paris since 2023.
Awarded the Gandoger Prize for Cryptogamy in 2003 by the Botanical Society of France (SBF)