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.
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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).
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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
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Journals
Year Citation 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.
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, 3 pages.
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.
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.
Scopus3 WoS32021 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.
Scopus2 WoS22020 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.
Scopus12020 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.
Scopus4 WoS42020 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.
Scopus8 WoS62019 Mucina, L., & Hammer, T. A. (2019). Limonium dagmarae (Plumbaginaceae), a new species from namaqualand coast, South Africa. Phytotaxa, 403(2), 71-85.
Scopus1 WoS12019 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.
Scopus1 WoS12018 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.
Scopus5 WoS42018 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.
Scopus7 WoS52018 Davis, R. W., & Hammer, T. A. (2018). Ptilotus yapukaratja (Amaranthaceae), a new species from the Gascoyne bioregion of Western Australia. Nuytsia, 29, 157-160.
Scopus12018 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.
Scopus22017 Hammer, T. A., Davis, R. W., & Thiele, K. R. (2017). Wadithamnus, a new monotypic genus in amaranthaceae. Phytotaxa, 295(2), 173-184.
Scopus2 WoS22017 Davis, R. W., & Hammer, T. A. (2017). Ptilotus benlii (Amaranthaceae), a new species from Western Australia. Nuytsia, 28, 299-302.
Scopus12017 Hammer, T. A., & Davis, R. W. (2017). Synonymisation of three Western Australian taxa within ptilotus (Amaranthaceae). Nuytsia, 28, 133-134.
Scopus22016 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.
Scopus12015 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.
Scopus20 WoS182014 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.
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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: Practical Demonstrator, Plant Identification II (University of Adelaide)
2018: Practical Demonstrator, Plant Diversity and Evolution (University of Western Australia)
2018: Tutor, Conservation Biology (University of Western Australia)
2016: Practical Demonstrator, Plant Diversity and Evolution (University of Western Australia)
2016: Practical Demonstrator, Frontiers in Biology (University of Western Australia)
2015: Practical Demonstrator, Plant Diversity and Evolution (University of Western Australia)
2013: Teaching Assistant, Human Biology (Old Dominion University)
2012: Teaching Assistant, Environmental Science (Old Dominion University)
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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
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Editorial Boards
Date Role Editorial Board Name Institution Country 2021 - ongoing Associate Editor Swainsona State Herbarium of South Australia Australia
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