> [!cite] BHL link: this entry starts at [page 189](https://www.biodiversitylibrary.org/page/33265866) of TL-2 Suppl. IV
> Author links: [IPNI](https://www.ipni.org/a/1674-1) LSID 1674-1, [Wikidata](https://www.wikidata.org/wiki/Q554178) QID Q554178
> Support pages: [[Abbreviations|abbreviations]], [[Layout key|layout key]], [[Cite TL-2|cite TL-2]]
### Author
Claus, Karl \[Carl\] Ernst (1796-1864), Russian botanist, born at Dorpat, educated in a "Kreisschule" in Dorpat, in St. Petersburg apprentice in a pharmacy in 1810 (sic), took the pharmaceutic examination in Dorpat 1815, in a pharmacy at St. Petersburg 1816, provisor in Saratow 1817, pharmacist at Kasan 1826, starting his botanical interests, travelled in the Ural-Wolga area, assistant at the Chemical cabinet of the University of Dorpat ca. 1830, Magister phil. Dorpat 1837, Dr. phil. 1839 at Kasan, professor of pharmacy and director of the Dorpat pharmaceutic institute 1852, travelled in Germany 1863-1864.
**Abbreviated name**: *Claus* \[standard form in IPNI: *Claus*\]
#### Herbarium and types
[[Collection LE|LE]]. – Further material at [[Collection H|H]]-Steven (30).
#### Bibliography and biography
Barnhart 1: 354; BM 1: 354; CSP 1: 940-941; IH 2: 129; Kew 1: 565; PR 1732-1733; Rehder 5(index): 179; TR p. 59-60; Tucker 1: 159.
#### Biofile
- Anon., Flora 47: 284-285. 31 Mai 1864 (brief obit.); ÖBZ 14: 225. 1864 (d. St. Petersburg 12 Mar 1864).
- Candolle, Alph. de, Phytographie 403. 1880 (herb. at LE).
- Fournier, E., *in* H.E. Baillon, Dict. bot. 2: 89. 1880.
- Herder, F. von, Bot. Centralbl. 55: 264. 1893, 58: 389. 1894 (herbarium collections).
- Kukkonen, I., Herb. Christian Steven 37. 1971.
- Lindemann, E.E. von, Bull. Soc. imp. Natural. Moscou 59(1): 284. 1884.
- Schlechtendal, D.F.L. von, Bot. Zeit. 22(19): 131-132. 6 Mai 1894 (b. Dorpat, 11(23) Jan 1796, d. St. Petersburg 12 (24) Mar 1864, detailed obit.).
#### Composite works
Ueber die *Flora und Fauna der Kaspischen Steppe* – Index plantarum..., *in* C.C.T.T. Goebel, *Reise in die Steppen des südlichen Russlands*, vol. 2, 1839. Qu. – *Copy*: at BM.
### Publications
##### n.26.501. Localfloren der Wolgagegenden
**Title**
*Localfloren der Wolgagegenden*... Beiträge zur Pflanzenkunde des Russischen Reiches... St. Petersburg (Buchdruckerei der Kaiserlichen Akademie der Wissenschaften) 1852. Oct.
**Abbreviated title**: *Localfl. Wolgageg.*
**Notes**
*Publ*.: Jan 1852 (date on journal 1851, but "Auf Verfügung der Kais. Akad. Wiss" Jan 1852), cover-t.p., p. \[ii-iii\], \[1\]-324, *1 pl*. *Copies*: B, G, HH, MO, NY, U, US. – Published in Beitr. Pflk. Russ. Reich. 8, 1851 (date on p. 2 of cover of Beitr. Pflk. 8 (in Copy of NY)). – TR 267 and Rehder 1: 361.
*Ref*.: Tucker E.M., Cat. Arnold Arbor. 1: 159. 1914.