Timothy Andrew Hammer (born 1984), U.S.-born botanist.

IPNI standard form: T.Hammer

Taxon names authored

(List may be incomplete)

• 25 taxon names authored by Timothy Andrew Hammer

Publications

(List may be incomplete)

• Davis, R.W., Hammer, T.A. & Thiele, K.R. 2014. Two new and rare species of Ptilotus (Amaranthaceae) from the Eneabba sand plains, Western Australia. Nuytsia 24: 123–129. PDF Reference page. 
• Hammer, T., Davis, R. & Thiele, K.R. 2015. A molecular framework phylogeny for Ptilotus (Amaranthaceae): Evidence for the rapid diversification of an arid Australian genus. Taxon 64(2): 272–285. DOI: 10.12705/642.6 Reference page. 
• Davis, R.W., Hammer, T.A. & Thiele, K.R. 2016. A new and rare species of Nymphoides (Menyanthaceae) from the North West of Western Australia. Nuytsia 27: 245–252. PDF Reference page. 
• Hammer, T.A., Davis, R.W. & Thiele, K.R. 2017. Wadithamnus, a new monotypic genus in Amaranthaceae. Phytotaxa 295(2): 173–184. DOI: 10.11646/phytotaxa.295.2 Reference page. 
• Hammer, T.A., Davis, R.W. & Thiele, K.R. 2017[2018]. Species of Ptilotus, in: KeyBase: Flowering plants of Australia. Reference page. 
• Hammer, T.A. & Davis, R.W. 2017. Synonymisation of three Western Australian taxa within Ptilotus (Amaranthaceae). Nuytsia 28: 133–134. Online (with link to PDF). Reference page. 
• Davis, R.W. & Hammer, T.A. 2017. Ptilotus benlii (Amaranthaceae), a new species from Western Australia. Nuytsia 28: 299–302. Online, (with link to PDF). Reference page. 
• Hammer, T., Davis, R. & Thiele, K. 2018. The showy and the shy: reinstatement of two species from Ptilotus gaudichaudii (Amaranthaceae). Australian Systematic Botany 31(1): 1–7. DOI: 10.1071/SB17026 Reference page. 
• Hammer, T.A. & Davis, R.W. 2018. Ptilotus actinocladus (Amaranthaceae), a new and rare species from the Gascoyne bioregion, Western Australia. Nuytsia 29: 145–149. Online (with link to PDF). Reference page. 
• Davis, R.W. & Hammer, T.A. 2018. Ptilotus yapukaratja (Amaranthaceae), a new species from the Gascoyne bioregion of Western Australia. Nuytsia 29: 157–160. Online (with link to PDF). Reference page. 
• Hammer, T.A., Macintyre, P.D., Nge, F.J., Davis, R.W., Mucina, L. & Thiele, K.R. 2018. The noble and the exalted: a multidisciplinary approach to resolving a taxonomic controversy within Ptilotus (Amaranthaceae). Australian Systematic Botany 31(3): 262–280. DOI: 10.1071/SB17062 Reference page. 
• Hammer, T.A. 2018. The Ptilotus murrayi species group: synonymisation of P. petiolatus under P. murrayi and description of the new Western Australian species P. unguiculatus (Amaranthaceae). Swainsona 31(6): 93–100. PDF. Reference page. 
• Mucina, L. & Hammer, T.A. 2019. Limonium dagmarae (Plumbaginaceae), a new species from Namaqualand coast, South Africa. Phytotaxa 403(2): 71–85. DOI: 10.11646/phytotaxa.403.2.1 Reference page. 
• Hammer, T.A., Zhong, X., Colas des Francs-Small, C., Nevill, P.G., Small, I.D. & Thiele, K.R. 2019. Resolving intergeneric relationships in the aervoid clade and the backbone of Ptilotus (Amaranthaceae): Evidence from whole plastid genomes and morphology. Taxon 68(2): 297–314. DOI: 10.1002/tax.12054 Reference page.