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sumatrana, Teijsmann 535, consists of female specimens, three of which are deposited at the Bogor Botanical Gardens (formerly the Herbarium of the Buitenzorg Botanic Gardens), as well as one at the National Herbarium of the Netherlands in Leiden and one at the herbarium of Utrecht University.
In 1953, he began working at the National Herbarium of the Netherlands, as curator for the fungi, in particular, the Agaricales.