Anders Sandøe Ørsted (botanist)

Anders Sandøe Ørsted, also written as Anders Sandoe Oersted or Anders Sandö Örsted (21 June 1816 – 3 September 1872) was a Danish botanist, mycologist, zoologist and marine biologist. He was the nephew of physicist Hans Christian Ørsted and of politician Anders Sandøe Ørsted.[1]

Anders Sandøe Ørsted
Anders Sandoe Oersted.jpg
Born(1816-06-21)21 June 1816
Died3 September 1872(1872-09-03) (aged 56)
Nationality Denmark
Alma materUniversity of Copenhagen
Known forNeotropical botany
heteroecy of plant-pathogenic fungi
Nematode systematics
Scientific career
InstitutionsUniversity of Copenhagen
Doctoral studentsEugen Warming

In his early career, he published on Danish and arctic nematodes[2][3] and on the zonation of marine algae in the Sound.[4]

Between 1845 and 1848, he travelled extensively in Central America and the Caribbean and published numerous papers on the flora, concentrating on the plant families Acanthaceae and Fagaceae.[5][6][7][8][9] One of his better known publications is L'Amérique Centrale.[10]

He was appointed professor of botany at the University of Copenhagen in 1851, a post he held until 1862. He was succeeded by Ferdinand Didrichsen.

His studies of what has since been known as juniper-pear rust showed that this fungus annually switches between two hosts, Juniperus sabina is the primary (telial) host and pear Pyrus communis is the secondary (aecial) host. He thus was the first to discover that some plant-parasitic fungi are heteroecious.[11] These studies were continued on other Gymnosporangium species[12]

The orchid genus Oerstedella Reichenbach f. is named for him.

He is the author of several hundred plant names still in use.[14]


  1. ^ Spärck, R. (1932) Anders Sandöe Örsted, pp. 128-130 in: Meisen, V. Prominent Danish Scientists through the Ages. University Library of Copenhagen 450th Anniversary. Levin & Munksgaard, Copenhagen.
  2. ^ Ørsted, A.S. (1843) Grønlands Annulata dorsibranchiata. Kongelige Danske Videnskabernes Selskab, Naturhistorisk- mathematiske Afhandliger 10: 153-216.
  3. ^ Ørsted, A.S. (1843) Annulatorum Danicorum Conspectus. I. Maricolæ. Hafniæ, Sumtibus Librariæ Wahlianæ, 1843.
  4. ^ Ørsted, A.S. (1844) De regionibus marinis: Elementa Topographiae Historiconaturalis Freti Oeresund. Respondente ornatissimo E. Petit; publice defendere studebit A.S. Ørsted. J.C. Scharling, Copenhagen.
  5. ^ Ørsted, A.S. (1861) Myrsineae centroamericanæ et mexicanæ. Videnskabelige Meddelelser fra den Naturhistoriske Forening i Kjøbenhavn.
  6. ^ Ørsted, A.S. (1858) Gesneraceæ centroamericanæ. Kongelige Danske Videnskabernes Selskabs Skrifter - Naturvidenskabelig og Mathematisk Afdeling, 5.Rk., vol. 5.
  7. ^ Ørsted, A.S. (1855) Mexicos og Centralamerikas Acanthaceer. Videnskabelige Meddelelser fra den Naturhistoriske Forening i Kjøbenhavn 1854.
  8. ^ Ørsted, A.S. (1852) Centralamerikas Rubiaceæ (Bestemmelser og Beskrivelser mestendeels af G. Bentham). Journal of the Linnean Society 1852.
  9. ^ Ørsted, A.S. (1867) Recherches sur la classification des Chênes. Mémoires de la Societé d’Histoire Naturelle de Copenhague 1867.
  10. ^ Ørsted, A.S. (1863) L'Amérique Centrale: Recherches sur sa flora et sa géographie physique Archived September 30, 2007, at the Wayback Machine. Copenhague, Bianco Luno
  11. ^ Ørsted, A.S. (1963) Om Sygdomme hos Planterne, som foraarsages af Snyltesvampe, navnlig om Rust og Brand og om Midlerne til deres Forebyggelse. Kjøbenhavn.
  12. ^ Ørsted, A.S. (1866) Indpodningsforsøg, hvorved det bevises, at der finder et Generationsskifte Sted mellem den paa Enens Grene snyltende Bævrerust (Podisoma juniperinum) og den par Rønnens Blade voxende Hornrust (Roestelia cornuta). Resumé: Nouvelles observations sur un champignon parasite etc. Bulletin de l'Académie Royale des Sciences et des Lettres de Danemark 1866.
  13. ^ IPNI.  Oerst.
  14. ^ IPNI list of plant names with Oerst. as author.

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