Johannes Ludwig Emil Robert von Hanstein (15 May 1822 – 27 August 1880) was a German
botanist
Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ...
who was a native of
Potsdam.
He attended classes at the ''Gärtnerlehranstalt'' (Institute of
Horticulture) in
Potsdam, and later studied sciences in
Berlin, obtaining 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
A herbarium (plural: herbaria) is a collection of preserved plant specimens and associated data used for scientific study.
The specimens may be whole plants or plant parts; these will usually be in dried form mounted on a sheet of paper (called ...
. 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
In botany, a plant shoot consists of any plant stem together with its appendages, leaves and lateral buds, flowering stems, and flower buds. The new growth from seed germination that grows upward is a shoot where leaves will develop. In the spri ...
behaviour in plants. With his close friend,
Nathanael Pringsheim
Nathanael Pringsheim (30 November 1823 – 6 October 1894) was a German botanist.
Biography
Nathanael Pringsheim was born at Landsberg, Prussian Silesia, and studied at the universities of Breslau, Leipzig, and Berlin successively. He graduated ...
(1823–1894), he conducted pioneer research on the
fertilization process in
ferns.
The plant genus ''
Hansteinia'' of the family
Acanthaceae is named after him.
Gallery
File:Capsella bursa-pastoris, kiembol (Hanstein).jpg, '' Capsella bursa-pastoris'' drawing by Johannes von Hanstein
File:Asteranthera ovata (3163923562).jpg, ''Asteranthera
''Asteranthera'' is a monotypic plant genus in the family Gesneriaceae, native to the humid forests of Argentina and Chile. The sole species in the genus, ''Asteranthera ovata'', is an evergreen scrambling vine
A vine (Latin ''vīnea'' "gra ...
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
Germination is the process by which an organism grows from a seed or spore. The term is applied to the sprouting of a seedling from a seed of an angiosperm or gymnosperm, the growth of a sporeling from a spore, such as the spores of fungi, fer ...
of
monocotyl
Monocotyledons (), commonly referred to as monocots, (Lilianae ''sensu'' Chase & Reveal) are grass and grass-like flowering plants (angiosperms), the seeds of which typically contain only one embryonic leaf, or cotyledon. They constitute one of t ...
s and
dicots), (1870).
He was also an editor of the journal ''Botanische Abhandlungen aus dem Gebiete der Morphologie und Physiologie'' (Botanical treatises from the areas of morphology and physiology).
Botanische abhandlungen aus dem Gebiet der Morphologie und ..., Volume 4
edited by Johannes Ludwig Emil Robert von Hanstein Example :
* With Ernst Pfitzer. ''Untersuchungen über Bau und Entwicklung der Bacillariaceen (Diatomaceen)'', (1871)
Read online
References
* Parts of this article are based on a translation of an equivalent article at the German Wikipedia
The German Wikipedia (german: Deutschsprachige Wikipedia) is the German-language edition of Wikipedia, a free and publicly editable online encyclopedia.
Founded on March 16, 2001, it is the second-oldest Wikipedia (after the English Wikipedia), ...
, including:
*
NDB/ADB Deutsche Biographie
(biography)
*
4. Auflage. Band 8, Bibliographisches Institut, Leipzig 1885–1892, S. 149–150.
Scientists from Potsdam
1822 births
1880 deaths
University of Bonn faculty
19th-century German botanists
{{Germany-botanist-stub