Karl Hermann Zahn (3 December 1865,
Baiertal – 8 February 1940,
Haigerloch
Haigerloch is a town in the north-western part of the Swabian Alb in Germany.
Geography Geographical location
Haigerloch lies at between 430 and 550 metres elevation in the valley of the Eyach river, which forms two loops in a steep shelly limest ...
) 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 leading authority regarding the genus ''
Hieracium
''Hieracium'' (),
known by the common name hawkweed and classically as (from ancient Greek ιεράξ, 'hawk'),
is a genus of flowering plant in the family Asteraceae, and closely related to dandelion (''Taraxacum''), chicory ('' Cichorium'') ...
'' (
hawkweed
''Hieracium'' (),
known by the common name hawkweed and classically as (from ancient Greek ιεράξ, 'hawk'),
is a genus of flowering plant in the family Asteraceae, and closely related to dandelion (''Taraxacum''), chicory ('' Cichorium'') ...
).
He received his education in
Karlsruhe
Karlsruhe ( , , ; South Franconian: ''Kallsruh'') is the third-largest city of the German state (''Land'') of Baden-Württemberg after its capital of Stuttgart and Mannheim, and the 22nd-largest city in the nation, with 308,436 inhabitants. ...
(1884–85), and beginning in 1891, worked as a high school teacher in
Heidelberg
Heidelberg (; Palatine German language, Palatine German: ''Heidlberg'') is a city in the States of Germany, German state of Baden-Württemberg, situated on the river Neckar in south-west Germany. As of the 2016 census, its population was 159,914 ...
. He later taught high school classes in
Freiburg im Breisgau
Freiburg im Breisgau (; abbreviated as Freiburg i. Br. or Freiburg i. B.; Low Alemannic German, Low Alemannic: ''Friburg im Brisgau''), commonly referred to as Freiburg, is an independent city in Baden-Württemberg, Germany. With a population o ...
and in
Donaueschingen
Donaueschingen (; Low Alemannic: ''Eschinge'') is a German town in the Black Forest in the southwest of the federal state of Baden-Württemberg in the Schwarzwald-Baar '' Kreis''. It stands near the confluence of the two sources of the river Da ...
. In 1923 he was appointed professor of
geometry
Geometry (; ) is, with arithmetic, one of the oldest branches of mathematics. It is concerned with properties of space such as the distance, shape, size, and relative position of figures. A mathematician who works in the field of geometry is c ...
,
chemistry
Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, elements that make up matter to the chemical compound, compounds made of atoms, molecules and ions ...
and material technology at
Karlsruhe University of Applied Sciences
Karlsruhe ( , , ; South Franconian: ''Kallsruh'') is the third-largest city of the German state (''Land'') of Baden-Württemberg after its capital of Stuttgart and Mannheim, and the 22nd-largest city in the nation, with 308,436 inhabitants. I ...
.
Published works
* ''Die Hieracien der Schweiz'', 1906 – Hieracium of
Switzerland
). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...
.
* ''Les Hieracium des Alpes maritimes'', 1916 – Hieracium of the
Maritime Alps
The Maritime Alps (french: Alpes Maritimes ; it, Alpi Marittime ) are a mountain range in the southwestern part of the Alps. They form the border between the regions of France, French region of Provence-Alpes-Côte d'Azur and the regions of Italy ...
.
* ''Compositae-Hieracium'', (published in 12 editions from 1921 to 1957).
Zahn made valuable contributions involving ''Hieracium'' towards
Adolf Engler
Heinrich Gustav Adolf Engler (25 March 1844 – 10 October 1930) was a German botanist. He is notable for his work on alpha taxonomy, plant taxonomy and phytogeography, such as ''Die natürlichen Pflanzenfamilien'' (''The Natural Plant Families'' ...
's "''
Das Pflanzenreich
Heinrich Gustav Adolf Engler (25 March 1844 – 10 October 1930) was a German botanist. He is notable for his work on alpha taxonomy, plant taxonomy and phytogeography, such as ''Die natürlichen Pflanzenfamilien'' (''The Natural Plant Families'' ...
''", as well as to
Ascherson and
Graebner's "''Synopsis der mitteleuropäischen Flora''".
Google Books
Synopsis der mitteleuropäischen Flora
References
{{DEFAULTSORT:Zahn, Karl Hermann
1865 births
1940 deaths
People from Wiesloch
19th-century German botanists
20th-century German botanists