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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Researcher in School of Biological Sciences and State Herbarium of South Australia, focusing on plant evolution, systematics and taxonomy.
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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 2024 Hammer, T., & Davis, R. (2024). Ptilotus ostentans (Amaranthaceae), a new species from Western Australia segregated from Ptilotus seminudus. Swainsona, 38, 73-77. 2024 Thiele, K. R., & Hammer, T. A. (2024). Four new Western Australian species related to Hibbertia axillibarba (Dilleniaceae). Australian Journal of Taxonomy, 58, 1-6.
2024 Hammer, T., & Thiele, K. (2024). New combinations of Hibbertia (Dilleniaceae) segregated from H. hibbertioides and H. glomerata. Nuytsia, 35, 31-45.
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.
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(2), 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.
2023 Hammer, T. (2023). Hibbertia fulva (Dilleniaceae), a new species from the Northern Territory in
the H. banksii species group. Swainsona, 37(3), 71-74.2022 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(2), 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.
Scopus8 WoS52022 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.
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), 4 pages.
Scopus7 WoS22022 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.
2022 Hammer, T. (2022). Two new cremnophilous Hibbertia (Dilleniaceae) species from the Northern Territory. Swainsona, 36(4), 121-127. 2022 Hammer, T. (2022). Inadvertent lectotypifications of Australian Dillenia and Tetracera (Dilleniaceae). Swainsona, 36(4), 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(6), 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.
Scopus2 WoS12021 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.
Scopus20 WoS142021 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.
Scopus11 WoS8 Europe PMC22020 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.
Scopus5 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.
Scopus10 WoS82019 Mucina, L., & Hammer, T. A. (2019). Limonium dagmarae (Plumbaginaceae), a new species from namaqualand coast, South Africa. Phytotaxa, 403(2), 71-85.
Scopus3 WoS22019 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.
Scopus2 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.
Scopus8 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.
Scopus22018 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.
2017 Hammer, T. A., Davis, R. W., & Thiele, K. R. (2017). Wadithamnus, a new monotypic genus in amaranthaceae. Phytotaxa, 295(2), 173-184.
Scopus3 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(Volume 27, 13 Dec 2016), 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.
Scopus21 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.
Scopus2- Thiele, K. R., & Hammer, T. A. (n.d.). Four new small-flowered species of Western Australian Hibbertia (Dilleniaceae). Australian Journal of Taxonomy, 1-12.
- Thiele, K. R., & Hammer, T. A. (n.d.). Two new species and a new combination in the Western Australian Hibbertia glomerosa (Dilleniaceae) species group. Australian Journal of Taxonomy, 1-5.
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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.
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)
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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 2023 - ongoing Editor Australian Journal of Taxonomy Taxonomy Australia Australia 2021 - ongoing Associate Editor Swainsona State Herbarium of South Australia Australia
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