Dutch botanist
Dr Maarten Joost Maria Christenhusz (born 27 April 1976) is a Dutch botanist, natural historian and photographer. 
Career.
He was born in Enschede, the Netherlands, received his undergraduate and master's degrees from Utrecht University in Biology, and earned his PhD from the University of Turku, Finland in 2007. He is an authority on fern, gymnosperm and angiosperm classification, and is a compiler of the Angiosperm Phylogeny Group (compiler of APG IV). He has specialised in Marattiaceae and he described many species of "Danaea", including "Danaea kalevala" from the Lesser Antilles. A species of Moraceae, "Dorstenia christenhuszii" was named in honour of its discoverer. He wrote several books and over 200 academic articles on a variety of "natural history" subjects. He was editor for the Linnean Society until 2023. He lives in Gwynedd, Wales, UK.
He is the former chief editor and initiator of the botanical journal "Phytotaxa", an associate editor of the "Botanical Journal of the Linnean Society" and emeritus chief editor of the "Zoological Journal of the Linnean Society". He has an interest in island biogeography, botanical gardens, floristic treatments, horticulture, photography, natural history and taxonomy.
He works as a botanical consultant. He is the lead author (together with Michael F. Fay and Mark W. Chase) of an encyclopedia of vascular plants called "Plants of the World".
Selected bibliography.
 ;templatestyles src="Botanist/styles.css"/ ;The standard author abbreviation Christenh. is used to indicate this person as the author when citing a botanical name.
References.
 ;templatestyles src="Reflist/styles.css" / ;