> [!cite] BHL link: this entry starts at [page 511](https://www.biodiversitylibrary.org/page/33212553) of TL-2 Vol. VI
> Author links: [IPNI](https://www.ipni.org/a/10858-1) LSID 10858-1, [Wikidata](https://www.wikidata.org/wiki/Q21610977) QID Q21610977
> Support pages: [[Abbreviations|abbreviations]], [[Layout key|layout key]], [[Cite TL-2|cite TL-2]]
### Author
Truan y Luard, Alfredo (1837-1890), Swiss-born Spanish photographer, lithographer and diatomist; trained as photographer in Switzerland, 1853-1863; from 1863 in Gijon, Spain in charge of a glass factory, and dedicating himself in his spare time to the study of diatoms.
**Abbreviated name**: *Truan* \[standard form in IPNI: *Truan*\]
#### Herbarium and types
Diatoms at [[Collection AWH|AWH]].
#### Bibliography and biography
Barnhart 3: 403 (b. 19 Mai 1837, d. 3 Jan 1890); BM 5: 2144; CSP 19: 215; De Toni 1: cxxv, 2: cxv.
#### Biofile
- Anon., Bot. Centralbl. 41: 160. 1890 (d.); Bot. Jahrb. 11 (Beibl. 26): 8. 1890 (d.); Nat. Nov. 12: 126. 1890 (d.).
- Arenal, F.G., Act. Soc. Esp. Hist. nat. 19: 47-52. 1890 (obit.).
- Bridson, G.D.R. et al., Nat. hist. mss. res. Brit. Isl. 229.446. 1980.
- Deby, J., Nuova Notar. 1: 241. 1890 (obit.).
- Fryxell, G.A., Beih. Nova Hedw. 35: 363. 1975 (diatoms at AWH).
- Tempère, J., Le Diatomiste 1: 12. 1890.
- VanLandingham, S.L., Cat. Diat. 4: 2378. 1971, 6: 3597. 1978, 7: 4234. 1978.
#### Eponymy
*Truania* Pantocsek (1886) likely honors this author.
### Publications
##### n.15.234. Ensayo sobre la sinopsis de las Diatomeas de Asturias
**Title**
*Ensayo sobre la sinopsis de las Diatomeas de Asturias*,... Madrid (Imprenta de Fortanet,...) 1884. Oct.
**Abbreviated title**: *Ensayo Diatom. Asturias*.
**Notes**
*Publ*.: 1884-1885 (Nat. Nov. Dec (1) 1885), p. \[i\], \[1\]-76, *pl. 1-8. Copy*: FH. – Preprinted from Anal. Soc. esp. Hist. nat. 13: 307-364, *pl. 7-10.* 1884, 14: 239-256, *pl. 2-5.* 1885.
##### n.15.235. Die Diatomaceen der Polycystinenkreide
**Title**
*Die Diatomaceen der Polycystinenkreide* von Jérémie in Hayti Westindien... Berlin (Verlag von R. Friedländer & Sohn...) 1888. Qu.
**Abbreviated title**: *Diatom. Polycystinenkr.*
**Notes**
*Co-author*: Otto Nikolaus Witt (1853-1915).
*Publ*.: Jan 1888 (p. \[3\]: Dec 1887; Nat. Nov. Jan(1) 1888 "in press", Feb(1) 1888; Bot. Monatschr. Jan 1888; Bot. Zeit. 16 Feb 1888; some copies have 24 p. and 7 pl. \[indication of publication in parts(?), first announcement Bot. Zeit. 26 Mar 1886 as of "1885" but with no details\]), p. \[1\]-38, *pl. 1-7. Copies*: BR, FH, PH, US.
*Note*: For O.N. Witt see e.g. T.E. Thorpe, Nature 95: 179-180. 1915, and J.C. Poggendorff, Biogr.-lit. Handw.-Buch 3: 1456. 1898, 4(2): 1656-1660. 1904, 5: 1384. 1926, 7a(3): 777-778. 1971.