T. K. G. Herzog

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Theodor Carl (Karl) Julius Herzog (7 July 1880, Freiburg im Breisgau – 6 May 1961, Jena) was a German bryologist and phytogeographer. This botanist is denoted by the author abbreviation Herz. when citing a botanical name.[1]


He studied sciences at Freiburg and Zurich, obtaining his doctorate in 1903 from the University of Munich as a student of botanist Ludwig Radlkofer (1829-1927). Later, he attained his habilitation at Eidgenössische Technische Hochschule in Zürich under the sponsorship of Carl Joseph Schröter (1855-1939).[2]

From 1904 to 1912, he was engaged in a series of botanical excursions; Sardinia (1904 and 1906), Ceylon (1905 and 1908) and Bolivia (1907-08 and 1910-12).[3] In 1920 he became an associate professor of botany at the University of Munich, later succeeding Wilhelm Detmer (1850-1930) at the University of Jena (1925),[2] where he remained until 1948.[3]

A leading authority of mosses, he also dealt with the systematics and phytogeography of flowering plants. As his career progressed, he focused more of his energy towards the classification of liverworts, in particular the family Lejeuneaceae.[2]

The plant specific terms herzogiana and herzogii bear his name,[4] two examples being: Frullania herzogiana and Luteolejeunea herzogii.

Principal works[edit]

  • Vom Urwald zu den Gletschern der Kordillere, 1913 - From the jungles to the glaciers of the Cordillera.
  • Die Pflanzenwelt der bolivischen Anden und ihres östlichen Vorlandes, 1923 - Vegetation of the Bolivian Andes and its eastern foothills.
  • Anatomie der Lebermosse, 1925 - Anatomy of liverworts.
  • Bergfahrten in Südamerika, 1925 - Mountain ascents in South America.
  • Geographie der moose, 1926 - Geography of mosses.[5]


  1. ^ Brummitt, R. K.; C. E. Powell (1992). Authors of Plant Names. Royal Botanic Gardens, Kew. ISBN 1-84246-085-4. 
  2. ^ a b c Deutsche Biographie
  3. ^ a b JSTOR Global Plants (biography)
  4. ^ Google Books Etymological Dictionary of Grasses
  5. ^ Open Library (publications)

External links[edit]

  • IPNI List of plants described & co-described by Herzog.