Trithuria occidentalis

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Family Hydatellaceae

Taxonomy: Trithuria occidentalis Benth.

Synonyms: 2 (APC 2026-07-30)

Hydatella dioica D.A.Cooke (taxonomic synonym)
Juncella occidentalis (Benth.) F.Muell. ex Hieron. (nomenclatural synonym)

Distribution (APC): WA

Profiles: APC, Flora of Australia, ALA, iNaturalist, Florabase, ATRP

Traits

Top source datasets: ABRS_2022 (5), ABRS_2023 (6), SPRAT_2025_2 (1), Sjostrom_2006 (4), WAH_2022_2 (5), WAH_2023_2 (1), Wenk_2022 (2), Wenk_2023 (1), Wilson_2004 (2). See below for a full list of sources.
Summary: AusTraits contains 17 traits from 27 records in 9 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 (1) [sources: Wilson_2004]

flower morphology

sex_type (categorical): dioecious (3) [sources: ABRS_2022; Sjostrom_2006; WAH_2022_2]

fruit morphology

fruit_type (categorical): capsule (1) [sources: Sjostrom_2006]
fruit_fleshiness (categorical): dry (1) [sources: Sjostrom_2006]
fruit_dehiscence (categorical): dehiscent (1); indehiscent (1) [sources: ABRS_2023; Sjostrom_2006]

leaf morphology

leaf_length (numerical): 25 mm (25-25 mm) [sources: ABRS_2023]
leaf_width (numerical): 1 mm (1-1 mm) [sources: ABRS_2023]
leaf_shape (categorical): linear (1) [sources: ABRS_2023]
plant_photosynthetic_organ (categorical): leaf (1) [sources: ABRS_2023]

life history

plant_growth_form (categorical): herb (3) [sources: ABRS_2022; WAH_2022_2; Wenk_2022]
life_history (categorical): annual (3) [sources: ABRS_2022; WAH_2022_2; Wenk_2023]
plant_growth_substrate (categorical): aquatic (2) [sources: ABRS_2022; WAH_2022_2]
woodiness_detailed (categorical): herbaceous (3) [sources: ABRS_2022; WAH_2022_2; Wenk_2022]
storage_organ (categorical): no_storage_organ (1) [sources: SPRAT_2025_2]

whole plant morphology

plant_height (numerical): 0.05 m (0.05-0.05 m) [sources: WAH_2023_2]

Sources

dataset_id	n_traits	n_records	reference
ABRS_2023	6	6	Australian Biological Resources Study. Flora of Australia, Australian Biological Resources Study, Canberra.. accessed on 14 September, 2022.. 2023. url: http://www.ausflora.org.au.
ABRS_2022	5	5	Australian Biological Resources Study. Flora of Australia, Australian Biological Resources Study, Canberra.. accessed on 14 September, 2022.. 2022. url: http://www.ausflora.org.au.
WAH_2022_2	5	5	Western Australian Herbarium. Florabase—the Western Australian Flora.. accessed on 14 September, 2022.. 2022. url: https://florabase.dpaw.wa.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.
Wenk_2022	2	2	E. Wenk. “Unpublished data: Australian plant growth forms dataset”. 2022.
Wilson_2004	2	2	B. A. Wilson, J. Kuehs, L. E. Valentine, T. Sonneman, and K. M. Wolfe. “Guidelines for ecological burning regimes in Mediterranean ecosystems: a case study in Banksia woodlands in Western Australia”. Pacific Conservation Biology 20.1 (2014), p. 57. doi: 10.1071/pc140057.
SPRAT_2025_2	1	1	F. D. of Climate Change, Energy, the Environment, and Water. Species Profile and Threats Database. 2025. url: https://www.environment.gov.au/cgi-bin/sprat/public/sprat.pl.
WAH_2023_2	1	1	Western Australian Herbarium. Florabase—the Western Australian Flora.. accessed on 14 September, 2022.. 2023. url: https://florabase.dpaw.wa.gov.au/.
Wenk_2023	1	1	E. Wenk. “Unpublished data: Australian plant life history dataset, University of New South Wales, Sydney”. 2023.