Timothy Hammer

School of Biological Sciences

Faculty of Sciences, Engineering and Technology

Eligible to supervise Masters and PhD (as Co-Supervisor) - email supervisor to discuss availability.

My Research
Career
Publications
Grants and Funding
Teaching
Supervision
Professional Activities
Contact

My current position is Postdoctoral Research Fellow in the Waycott Lab (School of Biological Sciences) and Research Associate at the State Herbarium of South Australia.

My current research is focused on the evolution, systematics and taxonomy of the plant family Dilleniaceae, and specifically the Australian species of Hibbertia (currently > 300 species).

My current project is delivering a revisionary taxonomic treatment for the Australian members of Dilleniaceae and Hibbertia (the first since 1863). The taxonomic treatment will be delivered in species and genus profiles and published on the Flora of Australia platform (https://profiles.ala.org.au/opus/foa). In addition to species profiles, comprehensive identification keys for all recognised taxa are being constructed and will be made available online for the public (see https://keybase.rbg.vic.gov.au/keys/show/11717). Phylogenomics methods are also being used to resolve the evolutionary tree of Hibbertia and to use this phylogeny to study the its historical biogeography and floral character evolution. I am also working on describing new Hibbertia species and revising the taxonomy and/or nomenclature of existing species.

I am also collaborating on projects focused on the systematics and taxonomy of various plant groups, including Ptilotus (Amaranthaceae), Gomphrena (Amaranthaceae) and Swainsona (Fabaceae).

Awards and Achievements

Date Type Title Institution Name Country Amount
2020 Fellowship Australian Biological Resource Study Postdoctoral Fellowship University of Adelaide Australia 330,000
Education

Date Institution name Country Title
2019 University of Western Australia Australia PhD
2014 Old Dominion University United States MSc
2012 Old Dominion University United States BSc
Research Interests

Biogeography and Phylogeography Plant Biology & Botany Plant Systematics and Taxonomy

Date	Type	Title	Institution Name	Country	Amount
2020	Fellowship	Australian Biological Resource Study Postdoctoral Fellowship	University of Adelaide	Australia	330,000

Date	Institution name	Country	Title
2019	University of Western Australia	Australia	PhD
2014	Old Dominion University	United States	MSc
2012	Old Dominion University	United States	BSc

Journals

Year	Citation
2023	Thiele, K. R., & Hammer, T. A. (2023). Hibbertia glaucophylla is the correct name for the Western Australian species currently known as H. rupicola (Dilleniaceae). Australian Journal of Taxonomy, 13, 1-5. DOI
2023	Hammer, T. (2023). Description of Hibbertia hesperia (Dilleniaceae), a new species from the Kimberley region, and a new regional key to species. Swainsona, 37, 1-6.
2023	Hammer, T. (2023). Hibbertia radians (Dilleniaceae), a new combination from South Australia. Swainsona, 37, 63-70.
2023	Hammer, T., & Thiele, K. (2023). Two new Western Australian species related to Hibbertia priceana (Dilleniaceae). Australian Journal of Taxonomy, 29, 1-8. DOI
2022	Kellermann, J., Hammer, T. A., & Toelken, H. R. (2022). Uncovering the correct publication date, spelling and attribution for the basionym of Hibbertia subg. Hemistemma (Dilleniaceae). Taxon: international journal of plant taxonomy, phylogeny and evolution, 71(4), 892-896. DOI
2022	Hammer, T., & Thiele, K. (2022). Hibbertia archeri (Dilleniaceae), a new and rare species from Western Australia with transcontinental affinities. Swainsona, 36, 67-70.
2022	Smith, G. F., Figueiredo, E., Hammer, T. A., & Thiele, K. R. (2022). Dealing with inappropriate honorifics in a structured and defensible way is possible. TAXON, 71(5), 3 pages. DOI Scopus4 WoS5
2022	Thiele, K. R., & Hammer, T. A. (2022). Hibbertia subvillosa (Dilleniaceae), a new Western Australian species segregated from H. striata. Australian Journal of Taxonomy, 8, 1-5. DOI
2022	Thiele, K. R., Smith, G. F., Figueiredo, E., & Hammer, T. A. (2022). Taxonomists have an opportunity to rid botanical nomenclature of inappropriate honorifics in a structured and defensible way. Taxon, 71(6), 1151-1154. DOI Scopus2 WoS2
2022	Hammer, T. A., Toelken, H. R., & Thiele, K. (2022). Hibbertia advena (Dilleniaceae), a new and rare species from Queensland with transcontinental affinities. Australian Journal of Taxonomy, 9, 1-5. DOI
2022	Hammer, T. (2022). Two new cremnophilous Hibbertia (Dilleniaceae) species from the Northern Territory. Swainsona, 36, 121-127.
2022	Hammer, T. (2022). Inadvertent lectotypifications of Australian Dillenia and Tetracera (Dilleniaceae). Swainsona, 36, 101-103.
2022	Hammer, T. (2022). Updated nomenclature and an identification key for Hibbertia subg. Pachynema (Dilleniaceae), and description of a new species from the Northern Territory. Swainsona, 36, 153-160.
2022	Hammer, T., & Davis, R. (2022). Swainsona picta (Fabaceae), a new species from the Yalgoo bioregion, Western Australia. Swainsona, 36, 71-73.
2021	Hammer, T., & Davis, R. (2021). Ptilotus crinitus (Amaranthaceae), a new species from Western Australia’s Kimberley region. Swainsona, 35, 55-58.
2021	Davis, R., Palmer, J., & Hammer, T. (2021). Gomphrena axillaris and G. longistyla (Amaranthaceae), new species of Gomphrena from central and northern Australia. Swainsona, 35, 59-64.
2021	Hammer, T. A., Renton, M., Mucina, L., & Thiele, K. R. (2021). Arid Australia as a source of plant diversity: the origin and climatic evolution of Ptilotus (Amaranthaceae). Australian Systematic Botany, 34(6), 570-586. DOI
2021	Hammer, T. A., & Thiele, K. R. (2021). (119–122) Proposals to amend Articles 51 and 56 and Division III, to allow the rejection of culturally offensive and inappropriate names. Taxon, 70(6), 1392-1394. DOI Scopus11 WoS13
2021	Ye, D., Clode, P. L., Hammer, T. A., Pang, J., Lambers, H., & Ryan, M. H. (2021). Accumulation of phosphorus and calcium in different cells protects the phosphorus-hyperaccumulator Ptilotus exaltatus from phosphorus toxicity in high-phosphorus soils. Chemosphere, 264(1), 128438-1-128438-12. DOI Scopus10 WoS8 Europe PMC2
2020	Brundrett, M. C., & Hammer, T. A. (2020). The Eriochilus dilatatus (Orchidaceae) complex in Western Australia: Subspecies taxonomy is not supported by consistent differences in morphology or distribution. Australian Systematic Botany, 33(4), 329-345. DOI Scopus1
2020	Hammer, T. A., Ye, D., Pang, J., Foster, K., Lambers, H., & Ryan, M. H. (2020). Mulling over the mulla mullas: revisiting phosphorus hyperaccumulation in the Australian plant genus Ptilotus (Amaranthaceae). Australian Journal of Botany, 68(1), 63-74. DOI Scopus5 WoS4
2020	Hammer, T. A., Davis, R. W., & Thiele, K. R. (2020). Clarification of species boundaries within the Ptilotus royceanus Benl (Amaranthaceae) group. Austrobaileya, 10(4), 628-638.
2020	Davis, R., & Hammer, T. (2020). A key to the species of Swainsona (Fabaceae) in Western Australia and description of S. katjarra from the Little Sandy Desert region, Western Australia. Swainsona, 33, 143-148.
2020	Hammer, T. (2020). Taxonomic evaluation of Ptilotus manglesii (Amaranthaceae) and recognition of P. davisii for two phrase names in south-west Western Australia. Swainsona, 33, 103-109.
2019	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 Scopus9 WoS8
2019	Mucina, L., & Hammer, T. A. (2019). Limonium dagmarae (Plumbaginaceae), a new species from namaqualand coast, South Africa. Phytotaxa, 403(2), 71-85. DOI Scopus2 WoS2
2019	Hammer, T. A., Davis, R. W., & Thiele, K. R. (2019). Of a different feather: Two new species of featherheads from the Ptilotus macrocephalus (Amaranthaceae) complex. Australian Systematic Botany, 32(1), 61-70. DOI Scopus2 WoS1
2018	Hammer, T. A., Davis, R. W., & Thiele, K. R. (2018). The showy and the shy: Reinstatement of two species from Ptilotus gaudichaudii (Amaranthaceae). Australian Systematic Botany, 31(1), 1-7. DOI Scopus5 WoS4
2018	Hammer, T. (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(2017/2018), 93-100.
2018	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 Scopus7 WoS5
2018	Davis, R. W., & Hammer, T. A. (2018). Ptilotus yapukaratja (Amaranthaceae), a new species from the Gascoyne bioregion of Western Australia. Nuytsia, 29, 157-160. Scopus1
2018	Hammer, T. A., & Davis, R. W. (2018). Ptilotus actinocladus (Amaranthaceae), a new and rare species from the Gascoyne bioregion, Western Australia. Nuytsia, 29, 145-150. Scopus2
2018	Hammer, T. A., Davis, R. W., & Thiele, K. R. (2018). A key to Ptilotus (Amaranthaceae) in Western Australia. Nuytsia : The journal of the Western Australian Herbarium, 29(Volume 29, 13 Dec 2018), 217-227. DOI
2017	Hammer, T. A., Davis, R. W., & Thiele, K. R. (2017). Wadithamnus, a new monotypic genus in amaranthaceae. Phytotaxa, 295(2), 173-184. DOI Scopus2 WoS2
2017	Davis, R. W., & Hammer, T. A. (2017). Ptilotus benlii (Amaranthaceae), a new species from Western Australia. Nuytsia, 28, 299-302. Scopus1
2017	Hammer, T. A., & Davis, R. W. (2017). Synonymisation of three Western Australian taxa within ptilotus (Amaranthaceae). Nuytsia, 28, 133-134. Scopus2
2016	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(Volume 27, 13 Dec 2016), 245-252. DOI Scopus1
2015	Hammer, T., Davis, R., & Thiele, K. (2015). A molecular framework phylogeny for Ptilotus (Amaranthaceae):Evidence for the rapid diversification of an arid Australian genus. Taxon, 64(2), 272-285. DOI Scopus20 WoS18
2014	Davis, R. W., Hammer, T. A., & Thiele, K. R. (2014). Two new and rare species of Ptilotus (Amaranthaceae) from the Eneabba sandplains, Western Australia. Nuytsia, 24(1), 123-130. DOI Scopus2

Internet Publications

Year	Citation
2020	Davis, R., & Hammer, T. (2020). Online key to the species of Swainsona (Fabaceae) of Western Australia. KeyBase.
2020	Hammer, T., & Davis, R. (2020). Online key to the species of Gomphrena (Amaranthaceae) of Western Australia. KeyBase.
2017	Hammer, T., Davis, R., & Thiele, K. (2017). Online key to the species of Ptilotus (Amaranthaceae) of Western Australia. KeyBase.
2017	Hammer, T., Davis, R., & Thiele, K. (2017). Online key to the species of Ptilotus (Amaranthaceae). KeyBase.

2021: Postdoctoral Fellowship – Australasian Systematic Botany Society, Inc. Marlies Eichler Fellowship ($20,000 over 2 years)

2020: Postdoctoral Fellowship – Australian Biological Resource Study, National Taxonomy Research Grant Program ($A330,000 over 3 years)

2015: PhD Scholarship – Forrest Research Foundation, University of Western Australia (~$A45,000/annum for 4 years)

2023: Evolutionary Biology III (ENV BIOL 3590) & Evolution of Australian Biota III (ENV BIOL 3560)

2022: Evolution of Australian Biota III (ENV BIOL 3560) & Plant Identification II (ENV BIOL 2510)

2021: Plant Identification II (ENV BIOL 2510)

Current Higher Degree by Research Supervision (University of Adelaide)

Date Role Research Topic Program Degree Type Student Load Student Name
2022 Co-Supervisor Orchid systematics and conservation Doctor of Philosophy Doctorate Part Time Mr Andrew Evan McDougall

Date	Role	Research Topic	Program	Degree Type	Student Load	Student Name
2022	Co-Supervisor	Orchid systematics and conservation	Doctor of Philosophy	Doctorate	Part Time	Mr Andrew Evan McDougall

Editorial Boards

Date Role Editorial Board Name Institution Country
2021 - ongoing Associate Editor Swainsona State Herbarium of South Australia Australia

Date	Role	Editorial Board Name	Institution	Country
2021 - ongoing	Associate Editor	Swainsona	State Herbarium of South Australia	Australia

Email: timothy.hammer@adelaide.edu.au

Timothy Hammer

Awards and Achievements

Education

Research Interests

Journals

Internet Publications

Current Higher Degree by Research Supervision (University of Adelaide)

Editorial Boards

Connect With Me

External Profiles