Hyalosperma semisterile

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Family Asteraceae

Taxonomy: Hyalosperma semisterile (F.Muell.) Paul G.Wilson

Synonyms: 5 (APC 2026-07-30)

Helipterum jensenii A.D.Chapm. (taxonomic synonym)
Helipterum jesseni F.Muell. (taxonomic synonym)
Helipterum jessenii F.Muell. (pro parte taxonomic synonym)
Helipterum semisterile F.Muell. (nomenclatural synonym)
Hyalosperma variabile var. muelleri Sond. (pro parte taxonomic synonym)

Misapplied names: 1 (APC 2026-07-30)

Helipterum hyalospermum F.Muell. ex Benth. (pro parte misapplied)

Distribution (APC): SA, Qld, NSW, Vic

Profiles: APC, Flora of Australia, ALA, iNaturalist, NSW Flora, SA eFlora, Vic Flora, ATRP

Traits

Top source datasets: ANBG_2019 (4), Cheal_2017 (8), Draper_2023 (3), Fonseca_2000 (4), Kew_2019_1 (2), Munroe_2019 (1), NHNSW_2014_2 (3), NHNSW_2022 (4), NHNSW_2023 (10), RBGV_2022 (4), RBGV_2023 (8), Sjostrom_2006 (3), Wenk_2022 (2), Wenk_2023 (1), White_2020 (38), eFLOWER_Dun_2022 (5). See below for a full list of sources.
Summary: AusTraits contains 50 traits from 100 records in 16 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 (3) [sources: Cheal_2017; White_2020]
post_fire_recruitment (categorical): post_fire_recruitment (1) [sources: Cheal_2017]

flower morphology

flower_colour (categorical): red_brown (1); yellow_orange (1) [sources: NHNSW_2014_2]

fruit morphology

fruit_length (numerical): 1.5 mm (1.5-1.5 mm) [sources: NHNSW_2023; RBGV_2023]
fruit_type (categorical): achene (3) [sources: NHNSW_2023; RBGV_2023; Sjostrom_2006]
fruit_fleshiness (categorical): dry (1) [sources: Sjostrom_2006]
fruit_dehiscence (categorical): indehiscent (1) [sources: Sjostrom_2006]

leaf morphology

leaf_area (numerical): 5 mm2 (5-5 mm2) [sources: Fonseca_2000]
leaf_length (numerical): 10 mm (5-15 mm) [sources: NHNSW_2023; RBGV_2023]
leaf_width (numerical): 0.4 mm (0.2-0.6 mm) [sources: Fonseca_2000; NHNSW_2023]
leaf_mass_per_area (numerical): 78.74 g/m2 (78.74-78.74 g/m2) [sources: Fonseca_2000]
leaf_shape (categorical): terete (2) [sources: NHNSW_2023; RBGV_2023]
leaf_margin (categorical): entire (2) [sources: NHNSW_2014_2; RBGV_2023]
leaf_compoundness (categorical): simple (1) [sources: NHNSW_2023]
leaf_phyllotaxis (categorical): alternate (1) [sources: NHNSW_2023]
plant_photosynthetic_organ (categorical): leaf (2) [sources: NHNSW_2023; RBGV_2023]

life history

photosynthetic_pathway (categorical): c3 (3) [sources: Munroe_2019; White_2020]
plant_growth_form (categorical): herb (6) [sources: Fonseca_2000; NHNSW_2022; RBGV_2022; Wenk_2022; White_2020]
life_history (categorical): annual (4) [sources: Cheal_2017; NHNSW_2022; RBGV_2022; Wenk_2023]
woodiness_detailed (categorical): herbaceous (3) [sources: NHNSW_2022; RBGV_2022; Wenk_2022]
stem_growth_habit (categorical): decumbent (1); erect (2) [sources: NHNSW_2022; RBGV_2022]
nitrogen_fixing (categorical): non_nitrogen_fixer (2) [sources: White_2020]
parasitic (categorical): not_parasitic (2) [sources: White_2020]
pollination_syndrome (categorical): insect (3) [sources: Draper_2023; White_2020]
dispersal_syndrome (categorical): anemochory (3) [sources: Draper_2023; White_2020]
dispersers (categorical): wind (3) [sources: Draper_2023; White_2020]
flowering_time (categorical): nnnnnnnnyyyn (2); nnnnnnnnyyyy (1) [sources: NHNSW_2014_2; White_2020]
seedbank_longevity_class (categorical): long_persistent (1); persistent (2) [sources: Cheal_2017; White_2020]
vegetative_reproduction_ability (categorical): not_vegetative (2) [sources: White_2020]

seed morphology

seed_dry_mass (numerical): 0.22 mg (0.17-0.26 mg) [sources: Kew_2019_1]
seed_length (numerical): 1.34 mm (1.34-1.34 mm) [sources: ANBG_2019]
seed_width (numerical): 0.69 mm (0.69-0.69 mm) [sources: ANBG_2019]
seed_shape (categorical): cylindrical (1) [sources: ANBG_2019]

whole plant morphology

plant_height (numerical): 0.15 m (0.15-0.15 m) [sources: NHNSW_2023; RBGV_2023]
plant_physical_defence_structures (categorical): absent (2) [sources: White_2020]

Sources

dataset_id	n_traits	n_records	reference
White_2020	19	38	M. White, S. Sinclair, and D. Frood. Victorian Vital Attributes Database. database. Department of Environment, Land, Water and Planning, Victoria, 2020.
NHNSW_2023	9	10	N. H. of New South Wales. The Plant Information Network System of The Royal Botanic Gardens and Domain Trust Version 2.0.. accessed on 6 May, 2022.. 2023. url: https://plantnet.rbgsyd.nsw.gov.au/.
Cheal_2017	8	8	D. Cheal. Growth stages and tolerable fire intervals for Victoria's native vegetation data sets. Fire and adaptive management, report no. 84. Victorian Government Department of Sustainability and Environment Melbourne, 2010.
RBGV_2023	7	8	VicFlora. Flora of Victoria, Royal Botanic Gardens Victoria. accessed on 6 May, 2022.. 2023. url: https://vicflora.rbg.vic.gov.au/.
eFLOWER_Dun_2022	5	5	L. Dun and H. Sauquet. “Unpublished: Floral traits for GAP taxa, University of New South Wales, Australia”. 2022.
ANBG_2019	4	4	Australian National Botanic Gardens. The National Seed Bank. 2018. url: http://www.anbg.gov.au/gardens/living/seedbank/.
Fonseca_2000	4	4	C. R. Fonseca, J. M. Overton, B. Collins, and M. Westoby. “Shifts in trait-combinations along rainfall and phosphorus gradients”. Journal of Ecology 88 (2000), pp. 964-977. doi: 10.1046/j.1365-2745.2000.00506.x.
NHNSW_2022	4	4	N. H. of New South Wales. The Plant Information Network System of The Royal Botanic Gardens and Domain Trust Version 2.0.. accessed on 6 May, 2022.. 2022. url: https://plantnet.rbgsyd.nsw.gov.au/.
RBGV_2022	4	4	VicFlora. Flora of Victoria, Royal Botanic Gardens Victoria. accessed on 6 May, 2022.. 2022. url: https://vicflora.rbg.vic.gov.au/.
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.
NHNSW_2014_2	3	3	Royal Botanic Gardens Sydney. PLantNET: NSW flora online. 2014. url: http://plantnet.rbgsyd.nsw.gov.au/.
Sjostrom_2006	3	3	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.
Kew_2019_1	1	2	Royal Botanic Gardens Kew. Seed Information Database (SID) and Seed Bank Database. 2019. url: http://data.kew.org/sid/.
Wenk_2022	2	2	E. Wenk. “Unpublished data: Australian plant growth forms dataset”. 2022.
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.
Wenk_2023	1	1	E. Wenk. “Unpublished data: Australian plant life history dataset, University of New South Wales, Sydney”. 2023.