Klaus Kalb (born 1945) is a German botanist and lichenologist. He is recognized for his extensive work on the taxonomy, systematics, and biogeography of lichens, particularly those from tropical regions. Kalb has authored and co‑authored a large number of scientific papers and monographs, contributing to the description of numerous new lichen species and genera. His research has included field collections in continents such as Africa, South America, and Asia, and he has collaborated with other specialists on comprehensive floras and taxonomic revisions.
In botanical nomenclature, the author abbreviation “Kalb” is used to cite him as the authority for taxa he has described. Several lichen taxa have been named in his honor, reflecting his impact on the field.
Kalb has been associated with German botanical institutions, where he has served in curatorial and research capacities, maintaining and expanding lichen collections in herbaria. His contributions have been integral to advancing the understanding of lichen diversity and classification.
