> [!cite] BHL link: this entry starts at [page 36](https://www.biodiversitylibrary.org/page/33068278) of TL-2 Vol. II
> Author links: [IPNI](https://www.ipni.org/a/3601-1) LSID 3601-1, [Wikidata](https://www.wikidata.org/wiki/Q21514596) QID Q21514596
> Support pages: [[Abbreviations|abbreviations]], [[Layout key|layout key]], [[Cite TL-2|cite TL-2]]
### Author
Hammar, Olaf Niklas (1821-1875), Swedish botanist; Dr. phil. Lund 1847, lecturer ib. 1849-1859; later "telegrafkommissarie" at Ronneby.
**Abbreviated name**: *Hammar* \[standard form in IPNI: *Hammar*\]
#### Herbarium and types
Unknown; [[Collection S|S]]? (see Sayre, Bryologist 80: 509. 1978).
#### Bibliography and biography
Barnhart 2: 118; BM 2: 779; Kew 2: 567; Jackson p. 495; KR p. 262; Langman p. 347; MW p. 150; Rehder 1: 119; SBC p. 121 ("Hammar"); TL-2/53.
- Anon., Bot. Not. 1849: 204; J. Bot. 13: 383. 1875.
- Scheutz, N. J. W., Bot. Not. 1875(5): 158-159.
#### Composite works
See J. Agardh, *Syst. alg. advers.* pars 2 (O.N. Hammar resp.), TL 2/53.
### Publications
##### n.2341. Monographia Orthotrichorum et Ulotarum Sueciae
**Title**
*Monographia Orthotrichorum et Ulotarum Sueciae* quam consent. ampl. facult. philos. Lundensi p.p. Olaus Hammar, botanices docens, et Nic. Wilh. Theod. Holst, Scanus. In audit. i die xxix maji mdccclii, h. a.m. viii. P. i \[-ii\]. Lundae \[Lund\] (typis Berlingianus) 1852. Oct.
**Abbreviated title**: *Monogr. Orthotrich. Ulot. Suec.*
**Notes**
*Pars 1*: 29 Mai 1852, p. \[i\*\], \[i\]-ix.
*Pars 2*: 29 Mai 1852, p. \[i\], \[1\]-30, co-desendant Petrus Joh. Piscator.
*Copy*: NY.
##### n.2342. En monografi öfver slägtet Fumaria
**Title**
*En monografi öfver slägtet Fumaria*. Akademisk afhandlung som med vidtberömda filosofiska fakultetens tillstånd kommer att offentligen försvaras af Olof Hammar, Docent i botanik, på auditoriet n:o i den 14 Decemb. 1854, kl. 9. f. m. Lund (tryckt uti Berlingska Boktryckeriet) 1854. Oct.
**Abbreviated title**: *Monogr. slägt Fumaria*.
**Notes**
*Publ*.: 14 Dec 1854, p. \[i\]-xvi, \[1\]-58, \[1-3, err., ind.\], *pl. 1-11* (uncol. lith. author). *Copies*: G, NY.
*Ref*.: Anon., Bot. Zeit. 13: 832. 23 Nov 1855; review by "I" ibid. 14: 335-340. 9 Mai 1856.
##### n.2343. Monographia generis Fumariarum
**Title**
*Monographia generis Fumariarum*... Upsaliae \[Uppsala\] (typis exscripsit C. A. Leffler) 1857. Qu.
**Abbreviated title**: *Monogr. gen. Fumar.*
**Notes**
*Preprint*: Jan-Aug 1857 (Bot. Zeit. 18 Sep 1857; Bot. Not. Sep 1857; Flora 7-14 Oct 1857), p. \[i\], \[1\]-50, *pl. 1-6* (uncol. liths. by author). *Copies*: K, L, MO, NY, WU. "Ex Actis Reg. Soc. Sc. Ups. serie iii, vol. ii, part. i." Nova Acta Soc. Sci. Ups. ser. 3.2(8): 257-306, *pl. 1-6.* 1858 (copies reprint with journal pagination: BR, NY).
*Ref*.: Schlechtendal, D. F. L. von, Bot. Zeit. 15: 653-655. 18 Sep 1857 (rev. preprint).
- Anon., Flora 41: 13-15. 7 Jan 1858 (rev. preprint).