Fredrik Christian Emil Børgesen (1 January 1866 in

Copenhagen Copenhagen ( or .; da, København ) is the capital and most populous city of Denmark, with a proper population of around 815.000 in the last quarter of 2022; and some 1.370,000 in the urban area; and the wider Copenhagen metropolitan ar ...

– 22 March 1956 in

Frederiksberg Frederiksberg () is a part of the Capital Region of Denmark. It is formally an independent municipality, Frederiksberg Municipality, separate from Copenhagen Municipality, but both are a part of the City of Copenhagen. It occupies an area of ...

) was a

Danish Danish may refer to: * Something of, from, or related to the country of Denmark People * A national or citizen of Denmark, also called a "Dane," see Demographics of Denmark * Culture of Denmark * Danish people or Danes, people with a Danish ance ...

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 ...

and phycologist. He graduated in

botany 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 w ...

from the

University of Copenhagen The University of Copenhagen ( da, Københavns Universitet, KU) is a prestigious public university, public research university in Copenhagen, Copenhagen, Denmark. Founded in 1479, the University of Copenhagen is the second-oldest university in ...

and was subsequently employed as an assistant at the

Botanical Museum The Harvard University Herbaria and Botanical Museum are institutions located on the grounds of Harvard University at 22 Divinity Avenue, Cambridge, Massachusetts. The Botanical Museum is one of three which comprise the Harvard Museum of Natural ...

(1893–1900). His doctoral thesis dealt with the marine algae of the

Faroe Islands The Faroe Islands ( ), or simply the Faroes ( fo, Føroyar ; da, Færøerne ), are a North Atlantic island group and an autonomous territory of the Kingdom of Denmark. They are located north-northwest of Scotland, and about halfway bet ...

(1904). Later, he became librarian at the Library of the

Botanical Garden A botanical garden or botanic gardenThe terms ''botanic'' and ''botanical'' and ''garden'' or ''gardens'' are used more-or-less interchangeably, although the word ''botanic'' is generally reserved for the earlier, more traditional gardens, an ...

(1900–1935). Børgesen made investigations of marine

alga Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular mi ...

e e.g. around

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

Mauritius Mauritius ( ; french: Maurice, link=no ; mfe, label=Mauritian Creole, Moris ), officially the Republic of Mauritius, is an island nation in the Indian Ocean about off the southeast coast of the African continent, east of Madagascar. It incl ...

, the

Canary Islands The Canary Islands (; es, Canarias, ), also known informally as the Canaries, are a Spanish autonomous community and archipelago in the Atlantic Ocean, in Macaronesia. At their closest point to the African mainland, they are west of Morocc ...

and the

Antilles The Antilles (; gcf, label=Antillean Creole, Antiy; es, Antillas; french: Antilles; nl, Antillen; ht, Antiy; pap, Antias; Jamaican Patois: ''Antiliiz'') is an archipelago bordered by the Caribbean Sea to the south and west, the Gulf of Mex ...

. Many species have been named to his honour, e.g. '' Coccoloba borgesenii'' (

Polygonaceae The Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed—buckwheat family in the United States. The name is based on the genus ''Polygonum'', and was first used by Antoine Laurent de Jussieu in 1789 ...

) and numerous

algae Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular mic ...

, e.g. '' Hypnea boergesenii'' ( Hypneaceae) and ''

Padina boergesenii ''Padina boergesenii'', commonly known as the leafy rolled-blade alga, is a species of small brown alga found in the tropical and subtropical western Atlantic Ocean, the Mediterranean Sea, and the Pacific Ocean. This seaweed was named in honour o ...

'' (

Phaeophyceae Brown algae (singular: alga), comprising the class Phaeophyceae, are a large group of multicellular algae, including many seaweeds located in colder waters within the Northern Hemisphere. Brown algae are the major seaweeds of the temperate and po ...

Selected publications

* Børgesen, F. & Paulsen, O. (1898) ''Om Vegetationen paa De dansk-vestindiske Øer''. København: Nordisk Forlag. 114 pp. *:The work is a result of studies conducted during

the expedition ''The Expedition'' is the live album by the American metal band Kamelot, released in October 2000 through Noise Records. The last three tracks are rare studio recordings: "We Three Kings" (instrumental) and "One Day" are additional material from ...

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...

and the

organized by

Eugen Warming Eugen is a masculine given name which may refer to: * Archduke Eugen of Austria (1863–1954), last Habsburg Grandmaster of the Teutonic Order from 1894 to 1923 * Prince Eugen, Duke of Närke (1865–1947), Swedish painter, art collector, and pat ...

1891-1892. The whole work has a distinct " Warmingian" appearance, organized as it is according to major vegetation types ( halophytic vegetation, psammophytic vegetation, etc.) and with descriptions (incl. line drawings) of leaf and stem morphology in relation to habitat. Børgesen and Paulsen were students of

. Later, the both went their own ways, mainly to

phycology Phycology () is the scientific study of algae. Also known as algology, phycology is a branch of life science. Algae are important as primary producers in aquatic ecosystems. Most algae are eukaryotic, photosynthetic organisms that live in a w ...

and

marine biology Marine biology is the scientific study of the biology of marine life, organisms in the sea. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology classifies s ...

. *'' Botany of the Færöes'' *:These three papers were later reprinted in one volume: ** Børgesen, F. (1903) Marine algæ. In Vol. II, pp. 339–532. Copenhagen and London. ** Børgesen, F. (1908) The algæ-vegetation of the Færöese coasts, with remarks on the phyto-geography. In Vol. III, pp. 683–834. Copenhagen and London.Criticized by Porsild, M.P. & Simmons, Herm. G. (1904) Om Færöernes Havalgevegetation og dens Oprindelse - en Kritik. ''

Botaniska Notiser ''Botaniska Notiser'' was a Swedish scientific periodical concerning botany, issued in Lund, by Societate botanica Lundensi or unds Botaniska Förening It was published from 1839 to 1980, when it fused with ''Botanisk Tidsskrift'', '' Friesia'' a ...

'' 1904: 140-180 + 197-236. ** Børgesen, F. & Jónsson, H. (1908) The distribution of the marine algæ of the Arctic Sea and of the northernmost part of the Atlantic. In Vol. III Appendix pp. i-xxviii. *Børgesen, F. (1904) "Om Algevegetationen ved Færøernes Kyster". Gyldendalske Boghandel, Copenhagen. Doctoral dissertation, University of Copenhagen. * Børgesen, F. & Raunkiær, C. (1918
Mosses and Lichens collected in the former Danish West Indies
''

Dansk Botanisk Arkiv ''Dansk Botanisk Arkiv'' was a Danish scientific journal or monograph series concerning botany, issued by the Danish Botanical Society. It was published from 1913 to 1980. Articles were written in Danish, German, English and French. The synonym R ...

'' 2(9):1-18. * Børgesen, F. (1913–14) The marine Algæ of the Danish West Indies, Vol I. Chlorophyceæ and Phæophyceæ. Dansk Botanisk Arkiv 1(4) and 2(2). 226 pp. * Børgesen, F. (1915–20
The marine Algæ of the Danish West Indies, Vol. II. Rhodophyceæ; with addenda to the Chlorophyceæ, Phæophyceæ and Rhodophyceæ
''Dansk Botanisk Arkiv'' 3. 504 pp.

Notes

{{DEFAULTSORT:Borgesen, Frederik 19th-century Danish botanists Danish marine biologists Danish phycologists Botanists with author abbreviations 20th-century Danish botanists Academic staff of the University of Copenhagen University of Copenhagen alumni 1866 births 1956 deaths