- Carl Christensen
Carl Frederik Albert Christensen (1872–1942) was a Danish systematic
botanist . He graduated innatural history from theUniversity of Copenhagen under professorEugenius Warming . He was first school teacher inCopenhagen , later superintendent at the Botanical Museum. He was a specialist infern s and published a catalogue of the World'sPteridophytes , "Index Filicum". In addition, he authored a three-volume work on the history ofbotany inDenmark .elected scientific works
* Christensen, Carl (1905–06) Index Filicum. 744 s. Index Filicum Supplementum I-III (1913–17). Reprint 1973 by Koeltz Antiquariat.
* Christensen, Carl (1924-1926) Den danske botaniks historie med tilhørende Bibliografi. København, H. Hagerups Forlag. Three vols. 680 s.
References
*Pichi-Sermolli, R. (1946) Carl Christensen in memoriam (1872-1942). Nuovo Giornale Botanico Italiano, n.s., vol. 53, no. 1-2.
* [http://links.jstor.org/sici?sici=0002-8444%28191204%292%3A2%3C53%3ACFACSB%3E2.0.CO%3B2-U Benedict, R.C. (1912) Carl Frederik Albert Christensen: Some Biographical Notes. "American Fern Journal" 2 (2): 53-57.]
* [http://links.jstor.org/sici?sici=0002-8444%28194510%2F12%2935%3A4%3C131%3ACC%3E2.0.CO% Asplund, E. (1945) Carl Christensen. "American Fern Journal" 35 (4): 131-132.]
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