> [!cite] BHL link: this entry starts at [page 501](https://www.biodiversitylibrary.org/page/33120632) of TL-2 Vol. I > Author links: [IPNI](https://www.ipni.org/a/1629-1) LSID 1629-1, [Wikidata](https://www.wikidata.org/wiki/Q2114106) QID Q2114106 > Support pages: [[Abbreviations|abbreviations]], [[Layout key|layout key]], [[Cite TL-2|cite TL-2]] > [!example] See also [[Christensen, Carl Frederik Albert (Suppl.)|second entry]] for this author ### Author Christensen, Carl Frederik Albert (1872-1942) Danish botanist. **Abbreviated name**: *C. Chr.* \[standard form in IPNI: *C.Chr.*\] #### Herbarium and types Original fern herbarium at [[Collection BM|BM]]; 12.000 duplicates at [[Collection C|C]]. *Ref*.: IH 1 (ed. 6): 357, 2: 126. - Alston, Proc. Linn. Soc. London 156: 202. 1944/5. #### Bibliography and biography Barnhart 1: 345; BFM 2319; BL 1: 31, 100, 114, 127; BM 6: 205; Bossert p. 74; GR p. 681-682; IF p. 689, suppl. 1: 79, 2: 35, 3: 204-206, 4: 313 (bibl.); Kew 1: 549-550; KR p. 121; MW p. 78. - Benedict, Amer. Fern J. 2(2): 51-57. 1912. - Christensen, Dansk bot. lit. 1: 195. 1924 (portr.). - Looser, Rev. argent. Agron. 10: 279-280. 1943. - Paulsen, Naturens Verden, Kjöbenhavn 27: 1-4. 1943. - Petersen, Bot. Tidsskr. 46(2): 177-179. 1943. - Gagnepain, Fl. Indochine, tom. prél. 38. 1944. - Alston, Proc. Linn. Soc. London 156: 202. 1944/5. - Pichi-Sermolli, Nuovo Giorn. bot. Ital. ser 2. 53(1-2): 403-404. 1946. - Stafleu, Taxon 22: 465-473. 1973. - Lawalrée, Natura mosana 26(4): 113-116. 1973 (corr.). - Hansen, Bot. Tidsskr. 69(2/3): 207. 1974. - Holttum, Taxon 24: 499-500. 1975. #### Note A complete bibliography of Christensen's pteridological work is given in his *Index filicum*, main vol. and supplements. #### Eponymy *Christensenia* Maxon (1905). ### Publications ##### n.1128. Index filicum **Title** *Index filicum* sive enumeratio omnium generum specierumque Filicum et Hydropteridum ab anno 1753 ad finem anni 1905 descriptorum adjectis synonymis principalibus, area geographica etc. Kjöbenhavn (H. Hagerup) \[1905\]-1906. Oct. **Abbreviated title**: *Index filic.* **Notes** |pages |dates | |pages |dates | |pages |dates| |--- |--- |--- |--- |--- |--- |--- |--- | |\[i\]-\[ix\] |10 Oct 1906 | &nbsp|257-320 |18 Nov 1905 | &nbsp|577-640 |2 Jul 1906| |\[1\]-64 |5 Mai 1905 | &nbsp|321-384 |30 Dec 1905 | &nbsp|641-720 |20 Aug 1906| |65-128 |1 Jul 1905 | &nbsp|385-448 |12 Feb 1906 | &nbsp|721-744 |10 Oct 1906| |129-192 |20 Aug 1905 | &nbsp|449-512 |1 Apr 1906 | &nbsp|\[xiii\]-lix |10 Oct 1906| |193-256 |2 Oct 1905 | &nbsp|513-576 |19 Mai 1906| *Supplementum 1906-1912*: 20 Dec 1913, p. \[i\]-iv, \[1\]-131, \[132, corr.\] Kjøbenhavn (H. Hagerup) *Supplément préliminaire* pour les années 1913, 1914, 1915, 1916, Publié auz frais de S.A.I. Le Prince Bonaparte membre de l'Institut: Oct-Dec 1917, p. \[i-iii\], \[1\]-60 (Nat. Nov. Jun 1918). Kjøbenhavn (Triers Bogtrykkeri). *Supplementum tertium* pro annis 1917-1933: Oct 1934, p. \[1\]-219. Kjøbenhavn (H. Hage rup). *Supplementum quartum* pro annis 1934-1960 prepared by Rodolpho E. G. Pichi-Sermolli \[et coll.\]: Jan 1965, Utrecht, p. \[i\]-xiv, \[1\]-370, *Regnum vegetabile* vol. 37. *Copy*: U (including supplements). *Facsimile ed*.: Koenigstein (Otto Koeltz) 1973, ISBN 3-87429-048-4 and 3-87429-049-2. *Copy*: FAS. *Note*: The main work and supplements contain extensive pteridological bibliographies, called *Catalogus literaturae*, referred to in this work as IF. *Main work*: 671-744; *Supplement 1906-1912*: 82-86; *Supplement* \[2\]: 34-39; *Supplement*: 201-219; *Supplement 4*: 311-349. *Ref*.: BFM 2319; BM 6: 205; Kew 1: 549; KR p. 121; MW p. 79. - Stafleu, Taxon 22: 465-466. 1973. ##### n.1129. A monograph of the genus Dryopteris **Title** *A monograph of the genus Dryopteris*. København (Andr. Fred. Høst & Son) 1912 \[1913\]-1919\[1920\], 2 parts. Qu. **Abbreviated title**: *Monogr. Dryopteris*. **Notes** 1: Jan-Jun 1913 (t.p. 1912; Nat. Nov. Jul 1913, IF suppl. 1: 79 "1913"), p. \[i\], \[1\]-230, alt. \[55-282\]. *Copy*: U. – D. Kgl. Danske Vidensk. Selsk. Skrifter ser. 7, nat. mat. afd. 10(2). 2: Jan-Sep 1920 (t.p. 1911; Nat. Nov. Oct 1920, IF suppl. 3: 205 "1920"), p. \[1\]-132. *Copy*: U. – D. Kgl. Danske Vidensk. Selsk. Skrifter ser. 8, nat. mat. afd. 6(1). "I regard Christensen's monograph of "Dryopteris" as the first modern work of fern taxonomy..." (Holttum). *Ref*.: Holttum, Taxon 24: 499-500. 1975.