Johannes von Hanstein

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Johannes Ludwig Emil Robert von Hanstein (May 15, 1822 - August 27, 1880) was a German botanist who was a native of Potsdam.

He attended classes at the Gärtnerlehranstalt (Institute of Horticulture) in Potsdam, and later studied sciences in Berlin, attaining his doctorate in 1848. In 1855 he was a lecturer of botany at the University of Berlin, and six years later became curator of the royal herbarium. In 1865 he was appointed professor of botany at the University of Bonn and director of the botanical garden.

Hanstein is remembered for studies in plant anatomy and morphology. In 1868 he introduced the "histogen theory" to explain shoot apex behaviour in plants.^[1] With his close friend, Nathanael Pringsheim (1823-1894), he conducted pioneer research involving the fertilization process in ferns.

The plant genus Hansteinia of the family Acanthaceae is named after him.^[2]

The standard author abbreviation Hanst. is used to indicate this individual as the author when citing a botanical name.^[3]

Gallery

Capsella bursa-pastoris drawing by Johannes von Hanstein
Asteranthera ovata , (Cav.) Hanst. in the Puyehue National Park

Selected publications

Untersuchungen über den Bau und die Entwickelung der Baumrinde (Studies on the construction and development of tree bark) (1853).
Die Milchsaftgefässe und die verwandten Organe der Rinde, (1864).
Die Scheitelzellgruppe im Vegetationspunkt der Phanerogamen (The cortex cell group in the growth-point of phanerogams), (1869).
Die Entwicklung des Keimes der Monokotylen und Dikotylen (Development involving germination of monocotyls and dicots), (1870).
Botanische Abhandlungen aus dem Gebiete der Morphologie und Physiologie (Botanical treatises from the areas of morphology and physiology), (1870-82).

References

Parts of this article are based on a translation of an article from the German Wikipedia, including:
- NDB/ADB Deutsche Biographie (biography)
- Meyers Konversations-Lexikon 4. Auflage. Band 8, Bibliographisches Institut, Leipzig 1885–1892, S. 149–150.

↑ Mutation Breeding by A. M. van Harten; (Hanstein's histogen theory)
↑ JSTOR New Species of Hansteinia (Acanthaceae) from Colombia
↑ [http://www.ipni.org/ipni/advAuthorSearch.do?find_abbreviation=Hanst. "Author Query for 'Hanst.'"]. International Plant Names Index.

Authority control	WorldCat VIAF: 67217598 LCCN: no00073892 ISNI: 0000 0000 8254 6453 GND: 116461578

Persondata
Name	Hanstein, Johannes von
Alternative names
Short description	German botanist
Date of birth	May 15, 1822
Place of birth
Date of death	August 27, 1880
Place of death

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