Daniel Ohlsen
Botanist
Daniel Ohlsen is a taxonomist with a core research interest in the ferns of the Australasian and Malesian regions. Daniel is currently also writing a complete Bryophyte Flora for Victoria as an extension to the plant identification website VicFlora, and establishing a fern sporebank for Victoria to complement the holdings of the Victorian Conservation Seedbank. He has also been involved with various other projects, including maintenance and updating the vascular plants in VicFlora, the collection of new plant specimens for the herbarium, providing conservation assessments for threatened species, writing profiles for the Flora of Australia online, and teaching of botany and related courses.
Publications
Cantrill, D.J., Ohlsen, D.J., McCurry, M.R., Frese, M. (2023). Gleichenia nagalingumiae sp. nov., a remarkably well-preserved fossil species with in situ spores from the Miocene of Australia. Review of Palaeobotany and Palynology. https://doi.org/10.1016/j.revpalbo.2022.104823
Chen, C.-W., Perrie, L., Glenny, D., Chiou, W.-L., Fawcett, S., Smith, A.R., Parris, B.S., Ebihara, A., Ohlsen, D., Lehtonen, S., Dong, S.-Y., Lehnert, M., Field, A.R., Chao, Y.-S., Murdock, A.G., Sundue, M. (2022). An annotated checklist of lycophytes and ferns of the Solomon Islands. Fern Gazette 21, 292–419.
Ohlsen, D.J., Perrie, L.R., Shepherd, L.D., Bayly, M.J. (2022). Chloroplast phylogenies of Australasian Gleichenia ferns (Gleicheniaceae) reveal incongruence with current taxonomy, and frequent long-distance dispersal. Plant Systematics and Evolution. https://doi.org/10.1007/s00606-022-01818-y
Ke, B.-F., Wang, G.-J., Labiak, P., Rouhan, G., Chen, C.-W., Shepherd, L.D., Ohlsen, D.J., Renner, M.A.M., Karol, K.G., Li, F.W., Kuo, L.-Y. (2022). Systematics and plastome evolution in Schizaeaceae. Frontiers in Plant Science. https://doi.org/10.3389/fpls.2022.885501
Perrie, L.R., Amice, R., Shepherd, L.D., Laudereau, C., Bruy, D., Tuiwawa, M., Ohlsen, D.J., Brownsey, P.J. (2022). New records of fern species from New Caledonia in the genera Davallia, Dicranopteris, Dryopteris, Pteris, and Trichomanes. New Zealand Journal of Botany 61, 1–27.
Perrie, L.R., Field A.R., Ohlsen D.J., Brownsey P.J. (2021). Expansion of the fern genus Lecanopteris to encompass some species previously included in Microsorum and Colysis (Polypodiaceae). Blumea 66, 242–248.
Webb, A., Ohlsen, D., Walsh, N. (2021). A phenetic analysis of morphological variation in Acacia genistifolia. Muelleria 39, 113–126.
Ohlsen, D.J. (2020). Comparison of modern classifications for filmy ferns (Hymenophyllaceae) and a new combination in Trichomanes L. for the filmy fern Macroglena brassii Croxall, from Queensland, Australia. Muelleria 39, 75–78.
Ohlsen, D.J., Perrie, L.R., May, E.L., Bayly, M.J. (2020). A new fern record for Victoria, Hymenophyllum marginatum (Hymenophyllaceae). Muelleria 39, 9–13.
Cámara-Leret, R., et al. (2020). New Guinea has the world’s richest island flora. Nature 584, 579–583.
Perrie, L.R., Parris, B.S., Chen, C.W., Ohlsen, D.J., & Brownsey, P.J. (2020). Asplenium alleniae (Aspleniaceae), a new fern species from Borneo and New Guinea. Blumea - Biodiversity, Evolution and Biogeography of Plants. https://doi.org/10.3767/blumea.2021.65.03.06
Ohlsen, D.J., Brownsey, P.J., Shepherd, L.D., Perrie, L.R., May, E.L., Chen, C-W. and Bayly, M.J. (2020.) Pteris epaleata, a new fern species from Australia and New Zealand segregated from P. comans (Pteridaceae). Muelleria, 39, 17–26.
Brownsey, P.J., Ohlsen, D.J., Shepherd, L.D., Bouma, W.L., May, E.L., Bayly, M.J. and Perrie, L.R. (2020). A review of the fern genus Pellaea (Pteridaceae) in Australasia. Australian Systematic Botany, 33(5), 446–457.
Ohlsen, D.J., Shepherd, L.D., Perrie, L.R., Brownsey, P.J., Bayly, M.J. (2020) Genetic variation and phylogeography of the Australian and New Zealand fern Asplenium flabellifolium (Aspleniaceae). Australian Systematic Botany 33, 412–426.
Ohlsen, D.J., Perrie L.R., Shepherd L.D., Bayly M.J. (2018). A new combination for an Australian fern: Hymenasplenium wildii (Aspleniaceae). Muelleria 37, 19–21.
James, E.A., Brown G.K., Jordan R., Ohlsen D.J. (2018). Rarity, taxonomy and genetics: the chequered history of Grevillea williamsonii (Proteaceae). Pacific Conservation Biology https://doi.org/10.1071/PC17050
Schneider, H., Liu H-M., Chang Y-F., Ohlsen D.J. et al. (2017). Neo- and paleopolyploidy contribute to the species diversity of Asplenium-the most species-rich genus of ferns. Journal of Systematics and Evolution, 55, 353–364.
Ohlsen, D.J., Perrie L.R., Shepherd L.D., Brownsey P.J., Bayly M.J. (2014). Phylogeny of the fern family Aspleniaceae in Australasia and the south-western Pacific. Australian Systematic Botany 27, 355–371.
Ohlsen, D.J., Perrie L.R., Shepherd L.D., Bayly M.J. (2014). Taxonomic status and distribution of the critically endangered Christmas Island spleenwort (Asplenium listeri, Aspleniaceae): it is not as rare as we thought. Australian Systematic Botany 27, 372–377.
Ohlsen, D.J., Perrie L.R., Shepherd L.D., Brownsey P.J., Bayly M.J. (2014). Investigation of species boundaries and relationships in the Asplenium paleaceum complex (Aspleniaceae) using AFLP fingerprinting and chloroplast and nuclear DNA sequences. Australian Systematic Botany 27, 378–394.
Perrie, L.R., Wilson R.K., Shepherd L.D., Ohlsen D.J., Batty E.L., Brownsey P.J., Bayly M.J. (2013). Molecular phylogenetics and generic taxonomy of the Blechnaceae ferns. Taxon 63, 745–758.
Ohlsen, D.J., Field A.R. (2013). A new species of fern for Queensland: Diplazium squamuligum. Austrobaileya 9, 114–125.
Perrie, L.R., Shepherd L.D., de Lange P.J., Batty E.L., Ohlsen D.J., Bayly M.J., Brownsey P.J. (2013). Hymenophyllum pluviatile, a new and uncommon fern from New Zealand. New Zealand Journal of Botany, 51, 308–320.
Perrie, L.R., Ohlsen D.J., Shepherd L.D., Garrett M., Brownsey P.J., Bayly M.J. (2010). Tasmanian and Victorian populations of the Australasian fern Asplenium hookerianum result from independent dispersals from New Zealand. Australian Systematic Botany, 23, 1–6.
Ohlsen, D.J., Puttock C.F., Walsh N.G. (2010). Phenetic analyses of Ozothamnus hookeri, with the recognition of a new species, O. cupressoides. Muelleria, 28, 110–121.