> [!cite] BHL link: this entry starts at [page 1](https://www.biodiversitylibrary.org/page/33265678) of TL-2 Suppl. IV
> Author links: [IPNI](https://www.ipni.org/a/1473-1) LSID 1473-1, [Wikidata](https://www.wikidata.org/wiki/Q21508077) QID Q21508077
> Support pages: [[Abbreviations|abbreviations]], [[Layout key|layout key]], [[Cite TL-2|cite TL-2]]
### Author
Cedercreutz, Carl \[Wilhelm\] (1893-1968), Finnish phycologist at the Botanical Museum Helsinki, collected in Finland from 1916, and on the Azores 1938, Dr. phil. University of Helsinki 1927.
**Abbreviated name**: *Cedercr.* \[standard form in IPNI: *Cedercr.*\]
#### Herbarium and types
[[Collection H|H]] (Soc. Fauna Fl. fenn.).
#### Bibliography and biography
Barnhart 1: 325; BJI 2: 26; BL 2: 69, 83, 638-639; Collander p. 75-77 (54 titles); IH 2: 120; Kew 1: 500; Roon p. 25.
#### Biofile
- Anon., Med. Soc. Fauna Fl. fenn. 35: 255, 41: 118, 42: 130-131, 43: 229-230 (collections in H (Soc. Fauna Fl. fenn.)).
- Collander, R., Hist. bot. Finland 51. 1965.
- Collander, R. et al., Bibl. bot. fenn. 1901-1950: 75-77. 1973 (bibl.).
- Fagerström, L., Luonnon Tutjika 57, 85. 1953.
- Hansen, A., Bot. bibl. Azores 2, 3. 1970; Bocagiana 51: 4. 1980.
- Prescott, G.W., Bibl. Desmid. univ. 87-88. 1984.
- Solma, S. and O.L.Th. Tudeer, Helsingin yliopisto 1: 110. 1940.
### Publications
##### n.25.193. Finnländische Zygnemalen
**Title**
*Finnländische Zygnemalen*... Acta Societas pro fauna et flora fennica... 1924. Oct.
**Abbreviated title**: *Finnl. Zygnem.*
**Notes**
*Publ*.: 1924 (mss. submitted 2 Feb 1924), p. \[1\]-7. *Copies*: U; IDC 8553/1. – Issued as Acta Soc. Fauna Fl. fenn. 55(2). 1924. – Collander no. 2.
##### n.25.194. Laubwiesen in den Kirchspielen Kyrkslätt und Esbo
**Title**
Studien über *Laubwiesen in den Kirchspielen Kyrkslätt und Esbo* in Südfinnland. Mit besonderer Berücksichtigung der Verbreitung und Einwanderung der Laubwiesenarten ... Acta Botanica Fennica... edidit Societas pro fauna et flora fennica... Helsingforsia \[Helsinki\] 1927. Oct.
**Abbreviated title**: *Laubwiesen Kyrksl. Esbo*.
**Notes**
*Publ*.: 1927 (mss. submitted 5 Feb 1927), p. \[1\]-181 \[p. 151-181 distribution-maps\], *4* maps, phot. *1-10*, (uncol.). *Copies*: HH, MO, U. – Issued as Acta bot. fenn. 3. 1927. – Collander no. 3. – See also BL 2: 83.
*Note*: Also used as dissertation for the University of Helsinki 1927.
##### n.25.195. Süsswasseralgen aus Petsamo
**Title**
*Süsswasseralgen aus Petsamo*... Helsingforsiae \[Helsinki\] (Ex Officina typographica Societatis heredum J. Simelii) 1929 \[-1932\]. Oct.
**Notes**
*Publ*.: \[*1*\]: 13 Mai 1929 (date on each page), cover-t.p., p. \[140\]-158. *Copies*: B, L, U. – Reprinted and to be cited from Mem. Soc. Fauna Fl. fenn. 5: 140-158. 1929. – Collander no. 8.
*2*: 7 Mar 1932 (id.), cover-t.p., p. \[236\]-248. *Copies*: B, L, U. – Id. 7: 236-248. 1932. – Collander no. 15.
##### n.25.196. Spirogyra fluviatilis
**Title**
*Spirogyra fluviatilis* Hilse, ny för Finland... Memoranda Societas pro Fauna et Flora fennica... Helsingforsiae \[Helsinki\] 1930. Oct.
**Notes**
*Publ*.: 1930, p. \[131\]-132. *Copy*: B. – Reprinted and to be cited from Mem. Soc. Fauna Fl. fenn. 6: 131-132. 1930. – Collander no. 11.
##### n.25.197. Laubwiesen im
**Title**
Vergleichende Studien über die *Laubwiesen im* westlichen und östlichen *Nyland*... Acta botanica fennica... Helsingforsiae \[Helsinki\] 1931. Oct.
**Abbreviated title**: *Laubwies. Nyland*.
**Notes**
*Publ*.: 1931 (mss. submitted 1 Nov 1930), p. \[1\]-63, \[55-63 has 24 distr. maps\]. *Copies*: L, U. – Issued as Acta bot. fenn. 10. 1931. – Collander no. 14.
##### n.25.198. Zwei neue Heterokontenarten
**Title**
*Zwei neue Heterokontenarten*... Jena (Verlag von Gustav Fischer). 1931. Oct.
**Notes**
*Publ*.: 1931 (p. 522 mss. signed Jun 1931), cover-t.p., p. \[517\]-522. *Copies*: B, L. – Reprinted and to be cited from Arch. Protistenk. 75: 517-522. 1931. – Collander no. 13.
##### n.25.199. Die Characeen Finnlands
**Title**
*Die Characeen Finnlands*... Helsingforsiae \[Helsinki\] (ex Officina typographica Societatis heredum J. Simelii) 1933. Oct.
**Notes**
*Publ*.: 1933 (rd. at 19 Nov 1933), p. \[i\], \[241\]-254. *Copy*: U. – Reprinted and to be cited from Mem. Soc. Fauna Fl. fenn. 8: 241-254. 1933 – Collander no. 18.
##### n.25.200. Algenflora und Algenvegetation auf Åland
**Title**
Die *Algenflora und Algenvegetation auf Åland*... Acta botanica fennica 15 edidit Societas pro fauna et flora fennica... Helsingforsiae \[Helsinki\] 1934. Oct.
**Abbreviated title**: *Algenfl. -veg. Åland*.
**Notes**
*Publ*.: 1934 (mss. submitted 2 Dec 1933), p. \[1\]-120, loose error slip, *pl. 1-6* (i.e. uncol. phot.), maps i-ii. *Copies*: BR, G, L, U. – Issued as Acta bot. fenn. 15. 1934. – Collander no. 21.
##### n.25.201. Tietoja Pieksämäen
**Title**
*Tietoja Pieksämäen* ja Tuusniemen leväkasvistosta... Kuopio (Osakeyhtiö Kirgapaino Sanan Valta) 1934. Oct.
**Abbreviated title**: *Tietoja Pieks.*
**Notes**
*Publ*.: 1934, cover-t.p., p. \[1\]-12. *Copy*: B. – Issued as Kuopion Luonnon Ystäväin Yhdistyksen julkaisuja. Sarja B, 1, no. 5. 1934. – A slip pasted on p. \[1\] has text: "Diese Arbeit enthält ein Verzeichnis über Algen die in den Gemeinden Pieksämäen und Tuusniemen im mittleren Finnland eingesammelt worden sind." – Collander no. 22.
##### n.25.202. Zygnemaceen Finnlands
**Title**
Die *Zygnemaceen Finnlands*... Memoranda Societatis pro Fauna et Flora fennica... Helsingforsiae \[Helsinki\] 1935. Oct.
**Notes**
*Publ*.: 1935, p. \[i, title recto of 122\], \[122\]-132. *Copies*: B, L, U. – Reprinted and to be cited from Mem. Soc. Fauna Fl. fenn. 11: 122-132. 1935. – Collander no. 23.
##### n.25.203. Desmidiaceen von Åland
**Title**
Bemerkungen über einige *Desmidiaceen von Åland*... Helsingforsiae \[Helsinki\] (Akademische Buchhandlung), Berlin, (R. Friedländer & Sohn) \[1936\]. Oct.
**Notes**
*Co-author*: Rolf Leo Grönblad (1895-1962).
*Publ*.: Dec 1936 (date on p. 9 "Gedruckt Dezember 1936", Nat. Nov. Aug 1937), cover-t.p., p. \[1\]-9, \[10\], *pl. 1-2* (uncol. draw.). *Copy*: B. – Issued as Soc. Sci. fenn., Commentat. Biol. 7(2). 1936. – Collander no. 25.
##### n.25.204. pflanzengeographische Einteilung der Seen Ålands
**Title**
Eine *pflanzengeographische Einteilung der Seen Ålands* und die regionale Verteilung der verschiedenen Seentypen... Helsingforsiae \[Helsinki\] (Acta Soc. pro Fauna et Flora Fenn.) 1937. Oct.
**Notes**
*Publ*.: 1937, cover-t.p., p. 327-338, \[338, map\]. *Copies*: B, L, U. – Reprinted and to be cited from Acta Soc. Fauna Fl. fenn. 60: 327-338. 1937. – Collander no. 27.
##### n.25.205. Bulbochaete-arterna
**Title**
Några ord om *Bulbochaete-arterna* i Finland... Memoranda Societatis pro Fauna et Flora fennica... 1938. Oct.
**Notes**
*Publ*.: 6 Nov 1937 (date of printing on pages, but text on p. 25 has "1938".), p. \[25\]-26. *Copy*: B. – Reprinted and to be cited from Mem. Soc. Fauna Fl. fenn. 14: 25-26. 1938. – Collander no. 28.
##### n.25.206. Anmärkningsvärda Characé-fynd
**Title**
*Anmärkningsvärda Characé-fynd*... Memoranda Societatis pro Fauna et Flora fennica... 1938. Oct.
**Notes**
*Publ*.: 5 Feb 1938 (printing), title on p. \[i\] recto of 108, 108-110. *Copy*: B. – Reprinted and to be cited from Mem. Soc. Fauna Fl. fenn. 14: 108-110. 1938. – Collander no. 29.
##### n.25.207. Einige
**Title**
*Einige* neue und bemerkenswerte *Zygnemaceen für Finnland*... Memoranda Societatis pro Fauna et Flora fennica... Helsingforsiae \[Helsinki\] 1940. Oct.
**Notes**
*Publ*.: Mai 1939 (date of printing 6 Mai 1939 on each page, but Collander insists on publication in 1940, sic), cover-t.p., p.177-179. *Copy*: B. – Reprinted and to be cited from Mem. Soc. Fauna Fl. fenn. 15: 177-179. 1940 (1939). – Collander no. 30.
##### n.25.208. Süsswasseralgen auf den Azoren
**Title**
Beitrag zur Kenntnis der *Süsswasseralgen auf den Azoren*... Societas Scientiarum Fennica... 1941. Oct.
**Notes**
*Publ*.: Oct 1941 (date of printing on p. 36), cover-t.p., p. \[1\]-36, *2 pl*. with 4 *photos*. *Copy*: B. – Reprinted and to be cited from Commentat. Biol. 8(9): 1-36, *2 pl*. 1941. – Collander no. 33.
##### n.25.209. Felsenalgen in Finnland
**Title**
Beitrag zur Kenntnis der *Felsenalgen in Finnland*... Helsingforsiae (ex officina typographica F. Tilgmann) 1941. Oct.
**Notes**
*Publ*.: 1941 (printed 7 Dec 1940), cover-t.p., p. \[105\]-121. *Copy*: B. – Reprinted and to be cited from Mem. Soc. Fauna Fl. fenn. 17: 105-121. 1941. – Collander no. 31.