Triodia irritans

Explore the data for this taxon in the portal

Family Poaceae

Taxonomy: Triodia irritans R.Br.

Synonyms: 5 (APC 2026-07-30)

Festuca irritans (R.Br.) F.Muell. (nomenclatural synonym)
Festuca irritans F.Muell. (nomenclatural synonym)
Sieglingia irritans (R.Br.) Kuntze (nomenclatural synonym)
Triodia aristata J.M.Black (taxonomic synonym)
Triodia irritans R.Br. var. irritans (nomenclatural synonym)

Distribution (APC): WA, NT, SA

Profiles: APC, Flora of Australia, ALA, iNaturalist, NT eFlora, SA eFlora, Florabase, ATRP

Traits

Top source datasets: ABRS_2022 (4), ABRS_2023 (11), Bloomfield_2018 (198), Crowley_2007 (2), Draper_2023 (3), Duncan_1998 (11), GrassBase_2014 (6), Kew_2019_1 (1), Moles_2011 (7), Munroe_2019 (1), NHNSW_2014 (1), Nano_2011 (2), Osborne_2014 (1), SAH_2022 (4), SAH_2023 (5), Simpson_2021 (3), Sjostrom_2006 (4), Sweedman_2006 (3), WAH_2022_2 (4), WAH_2023_2 (3), Wenk_2022 (2), Wenk_2023 (1), White_2020 (20), eFLOWER_Dun_2022 (4). See below for a full list of sources.
Summary: AusTraits contains 76 traits from 301 records in 24 datasets.

Traits by category (click to expand). For categorical traits, the values are listed. For numerical traits, the mean and range are shown.

fire response

resprouting_capacity (categorical): fire_killed (2); resprouts (2) [sources: Crowley_2007; Nano_2011; Simpson_2021; White_2020]

flower morphology

sex_type (categorical): hermaphrodite (1) [sources: Sjostrom_2006]

fruit morphology

fruit_type (categorical): caryopsis (4) [sources: ABRS_2023; SAH_2023; Sjostrom_2006; WAH_2023_2]
fruit_fleshiness (categorical): dry (1) [sources: Sjostrom_2006]
fruit_dehiscence (categorical): indehiscent (1) [sources: Sjostrom_2006]

leaf morphology

leaf_area (numerical): 164.24 mm2 (135.2-193.29 mm2) [sources: Duncan_1998; Moles_2011]
leaf_length (numerical): 146.67 mm (50-250 mm) [sources: ABRS_2023; GrassBase_2014; SAH_2023]
leaf_width (numerical): 1 mm (0.5-2 mm) [sources: ABRS_2023; GrassBase_2014]
leaf_dry_mass (numerical): 54.8 mg (54.8-54.8 mg) [sources: Duncan_1998]
leaf_mass_per_area (numerical): 372.52 g/m2 (241.97-404.86 g/m2) [sources: Bloomfield_2018; Duncan_1998; Moles_2011]
leaf_dry_matter_content (numerical): 0.81 g/g (0.59-1.18 g/g) [sources: Bloomfield_2018; Duncan_1998; Moles_2011]
leaf_shape (categorical): subulate (1) [sources: SAH_2023]
leaf_lamina_posture (categorical): conduplicate (1) [sources: ABRS_2023]
leaf_glaucousness (categorical): glaucous (1); not_glaucous (1) [sources: ABRS_2023]
leaf_hairs_adult_leaves (categorical): glabrous (1) [sources: Moles_2011]
leaf_hairs_immature_leaves (categorical): glabrous (1) [sources: Moles_2011]
leaf_phyllotaxis (categorical): alternate (1) [sources: ABRS_2023]
plant_photosynthetic_organ (categorical): leaf (2) [sources: ABRS_2023; SAH_2023]

life history

photosynthetic_pathway (categorical): c4 (4) [sources: Duncan_1998; Munroe_2019; Osborne_2014; White_2020]
plant_growth_form (categorical): graminoid (3); herb (2); hummock (2); tussock (3) [sources: ABRS_2022; Moles_2011; SAH_2022; WAH_2022_2; Wenk_2022; White_2020]
life_history (categorical): perennial (5) [sources: ABRS_2022; SAH_2022; Simpson_2021; WAH_2022_2; Wenk_2023]
woodiness_detailed (categorical): herbaceous (4) [sources: ABRS_2022; SAH_2022; WAH_2022_2; Wenk_2022]
stem_growth_habit (categorical): caespitose (2); compact (1); dense (1); spreading (1) [sources: ABRS_2022; SAH_2022; WAH_2022_2]
nitrogen_fixing (categorical): non_nitrogen_fixer (1) [sources: White_2020]
parasitic (categorical): not_parasitic (1) [sources: White_2020]
pollination_syndrome (categorical): abiotic (1); self (1); wind (1) [sources: Draper_2023; White_2020]
dispersal_syndrome (categorical): anemochory (2) [sources: Draper_2023; White_2020]
dispersers (categorical): wind (2) [sources: Draper_2023; White_2020]
flowering_time (categorical): yynnnnnyyyyy (1); yyyyyyyyyyyy (1) [sources: NHNSW_2014; White_2020]
seedbank_longevity_class (categorical): persistent (1) [sources: White_2020]
vegetative_reproduction_ability (categorical): not_vegetative (1) [sources: White_2020]
bud_bank_location (categorical): none (2); root_crown (1) [sources: Crowley_2007; Nano_2011; Simpson_2021]

nutrient and stable isotope

leaf_N_per_dry_mass (numerical): 10.09 mg/g (7.34-12.83 mg/g) [sources: Bloomfield_2018]
leaf_P_per_dry_mass (numerical): 0.61 mg/g (0.35-0.94 mg/g) [sources: Bloomfield_2018]

physiology

leaf_photosynthetic_rate_per_area_maximum (numerical): 14.81 umol{CO2}/m2/s (8.02-29.2 umol{CO2}/m2/s) [sources: Bloomfield_2018]
leaf_photosynthetic_rate_per_dry_mass_maximum (numerical): 0.05 umol{CO2}/g/s (0.02-0.1 umol{CO2}/g/s) [sources: Bloomfield_2018]
leaf_stomatal_conductance_per_area_at_Amax (numerical): 43.12 mmol{H2O}/m2/s (21.3-99.35 mmol{H2O}/m2/s) [sources: Bloomfield_2018]

seed morphology

seed_dry_mass (numerical): 1.06 mg (1.06-1.06 mg) [sources: Kew_2019_1]

whole plant morphology

plant_height (numerical): 0.65 m (0.3-1 m) [sources: ABRS_2023; GrassBase_2014; WAH_2023_2]
plant_physical_defence_structures (categorical): sharp_pointed_defence (2) [sources: Moles_2011; White_2020]

Sources

dataset_id	n_traits	n_records	reference
Bloomfield_2018	24	198	K. J. Bloomfield, L. A. Cernusak, D. Eamus, D. S. Ellsworth, I. C. Prentice, I. J. Wright, M. M. Boer, M. G. Bradford, P. Cale, J. Cleverly, J. J. G. Egerton, B. J. Evans, L. S. Hayes, M. F. Hutchinson, M. J. Liddell, C. Macfarlane, W. S. Meyer, S. M. Prober, H. F. Togashi, T. Wardlaw, L. Zhu, and O. K. Atkin. “A continental-scale assessment of variability in leaf traits: Within species, across sites and between seasons”. Functional Ecology 32.6 (2018), pp. 1492-1506. doi: 10.1111/1365-2435.13097.
White_2020	20	20	M. White, S. Sinclair, and D. Frood. Victorian Vital Attributes Database. database. Department of Environment, Land, Water and Planning, Victoria, 2020.
ABRS_2023	8	11	Australian Biological Resources Study. Flora of Australia, Australian Biological Resources Study, Canberra.. accessed on 14 September, 2022.. 2023. url: http://www.ausflora.org.au.
Duncan_1998	11	11	D. H. Duncan. “Unpublished data: Structural basis of variation in leaf mass per area in three plant clades, Macquarie University”. 1998.
Moles_2011	7	7	A. T. Moles, I. R. Wallis, W. J. Foley, D. I. Warton, J. C. Stegen, A. J. Bisigato, L. Cella-Pizarro, C. J. Clark, P. S. Cohen, W. K. Cornwell, W. Edwards, R. Ejrnaes, T. Gonzales-Ojeda, B. J. Graae, G. Hay, F. C. Lumbwe, B. Magana-Rodriguez, B. D. Moore, P. L. Peri, J. R. Poulsen, R. Veldtman, H. von Zeipel, N. R. Andrew, S. L. Boulter, E. T. Borer, F. F. Campon, M. Coll, A. G. Farji-Brener, J. D. Gabriel, E. Jurado, L. A. Kyhn, B. Low, C. P. H. Mulder, K. Reardon-Smith, J. Rodriguez-Velazquez, E. W. Seabloom, P. A. Vesk, A. van Cauter, M. S. Waldram, Z. Zheng, P. G. Blendinger, B. J. Enquist, J. M. Facelli, T. Knight, J. D. Majer, M. Martinez-Ramos, P. McQuillan, and L. D. Prior. “Putting plant resistance traits on the map: A test of the idea that plants are better defended at lower latitudes”. New Phytologist 191.3 (2011), pp. 777-788. doi: 10.1111/j.1469-8137.2011.03732.x.
GrassBase_2014	3	6	W. Clayton, M. Vorontsova, and K. H. &. H. Williamson. GrassBase - The online world grass flora. 2006. url: http://www.kew.org/data/grasses-db.html.
SAH_2023	4	5	S. H. of South Australia. eFlora of SA, Electronic Flora of South Australia. accessed on 6 May, 2022.. 2022. url: http://www.flora.sa.gov.au/.
ABRS_2022	4	4	Australian Biological Resources Study. Flora of Australia, Australian Biological Resources Study, Canberra.. accessed on 14 September, 2022.. 2022. url: http://www.ausflora.org.au.
SAH_2022	4	4	S. H. of South Australia. eFlora of SA, Electronic Flora of South Australia. accessed on 6 May, 2022.. 2022. url: http://www.flora.sa.gov.au/.
Sjostrom_2006	4	4	A. Sjöström and C. L. Gross. “Life-history characters and phylogeny are correlated with extinction risk in the Australian angiosperms”. Journal of Biogeography 33.2 (2006), pp. 271-290. doi: 10.1111/j.1365-2699.2005.01393.x.
WAH_2022_2	4	4	Western Australian Herbarium. Florabase—the Western Australian Flora.. accessed on 14 September, 2022.. 2022. url: https://florabase.dpaw.wa.gov.au/.
eFLOWER_Dun_2022	4	4	L. Dun and H. Sauquet. “Unpublished: Floral traits for GAP taxa, University of New South Wales, Australia”. 2022.
Draper_2023	3	3	J. T. Draper, S. Delean, J. G. Conran, P. Weinstein, and B. S. Simpson. “Life-history characteristics and climate correlates of dioecious plant species in central southern Australia”. Australian Journal of Botany unknown.unknown (2023), p. unknown. doi: 10.1071/BT22110.
Simpson_2021	3	3	K. J. Simpson, E. C. Jardine, S. Archibald, E. J. Forrestel, C. E. R. Lehmann, G. H. Thomas, and C. P. Osborne. “Resprouting grasses are associated with less frequent fire than seeders”. New Phytologist 230 (2021), pp. 832-844. doi: 10.1111/nph.17069.
Sweedman_2006	1	3	L. Sweedman and D. Merritt. Australian Seeds: A Guide to Their Collection, Identification, and Biology. CSIRO Publishing, 2006. ISBN: 9780643094079.
WAH_2023_2	2	3	Western Australian Herbarium. Florabase—the Western Australian Flora.. accessed on 14 September, 2022.. 2023. url: https://florabase.dpaw.wa.gov.au/.
Crowley_2007	2	2	G. Crowley, M. Gardener, and M. Marrinan. Tropical savannas fire response database. 2007. url: [www.landmanager.org.au](www.landmanager.org.au).
Nano_2011	2	2	C. E. M. Nano and P. J. Clarke. “How do drought and fire influence the patterns of resprouting in Australian deserts?”. Plant Ecology 212 (2011), pp. 2095-2110. doi: 10.1007/s11258-011-9988-x.
Wenk_2022	2	2	E. Wenk. “Unpublished data: Australian plant growth forms dataset”. 2022.
Kew_2019_1	1	1	Royal Botanic Gardens Kew. Seed Information Database (SID) and Seed Bank Database. 2019. url: http://data.kew.org/sid/.
Munroe_2019	1	1	S. E. M. Munroe, F. A. McInerney, J. Andrae, N. Welti, G. R. Guerin, E. Leitch, T. Hall, S. Szarvas, R. Atkins, S. Caddy-Retalic, and B. Sparrow. “The Photosynthetic Pathways of Plant Species Surveyed in Australia's National Terrestrial Monitoring Network”. Scientific Data 8 (2021), p. 97. doi: 10.1038/s41597-021-00877-z.
NHNSW_2014	1	1	Royal Botanic Gardens Sydney. PLantNET. 2014. url: http://plantnet.rbgsyd.nsw.gov.au/search/simple.htm.
Osborne_2014	1	1	C. Osborne, A. Salomaa, T. Kluyver, V. Visser, E. Kellogg, O. Morrone, M. Vorontsova, W. Clayton, and D. Simpson. “A global database of C4 photosynthesis in grasses”. New Phytologist 204 (2014), pp. 441-446. doi: 10.1111/nph.12942.
Wenk_2023	1	1	E. Wenk. “Unpublished data: Australian plant life history dataset, University of New South Wales, Sydney”. 2023.