Hydrilla verticillata

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Family Hydrocharitaceae

Taxonomy: Hydrilla verticillata (L.f.) Royle

Synonyms: 7 (APC 2026-07-30)

Elodea verticillata (L.f.) F.Muell. (nomenclatural synonym)
Hydrilla dentata Casp. (taxonomic synonym)
Hydrilla dentata Hartog (taxonomic synonym)
Hydrilla dentata Hook.f. (taxonomic synonym)
Hydrilla ovalifolia Rich. (taxonomic synonym)
Serpicula verticillata L.f. (nomenclatural synonym)
Udora australis F.Muell. (taxonomic synonym)

Distribution (APC): WA (native and naturalised), NT, SA, Qld, NSW, Vic

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

Traits

Top source datasets: ABRS_2022 (5), ABRS_2023 (10), Draper_2023 (4), Kew_2019_3 (3), NHNSW_2014_2 (1), NHNSW_2022 (6), NHNSW_2023 (11), NTH_2022 (2), NTH_2023 (11), SAH_2022 (3), SAH_2023 (6), Sjostrom_2006 (4), WAH_1998 (1), WAH_2022_2 (5), Wenk_2022 (2), Wenk_2023 (1), White_2020 (20), eFLOWER_Dun_2022 (20). See below for a full list of sources.
Summary: AusTraits contains 60 traits from 115 records in 18 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): resprouts (1) [sources: White_2020]

flower morphology

sex_type (categorical): dioecious (4) [sources: Draper_2023; NHNSW_2022; SAH_2022; Sjostrom_2006]

fruit morphology

fruit_length (numerical): 6.92 mm (5-10 mm) [sources: ABRS_2023; NHNSW_2023; NTH_2023]
fruit_width (numerical): 1.27 mm (0.8-1.5 mm) [sources: ABRS_2023; NHNSW_2023; NTH_2023]
fruit_height (numerical): 1.5 mm (1.5-1.5 mm) [sources: ABRS_2023; NHNSW_2023]
fruit_type (categorical): utricle (1) [sources: Sjostrom_2006]
fruit_fleshiness (categorical): dry (1) [sources: Sjostrom_2006]
fruit_dehiscence (categorical): indehiscent (1) [sources: Sjostrom_2006]

leaf morphology

leaf_length (numerical): 28.5 mm (2-40 mm) [sources: ABRS_2023; NHNSW_2023; NTH_2023; SAH_2023]
leaf_width (numerical): 4.33 mm (1-5 mm) [sources: ABRS_2023; NHNSW_2023; NTH_2023]
leaf_shape (categorical): elliptical (1); lanceolate (1); linear (1); strap-shaped (1); widely_ovate (1) [sources: SAH_2023]
leaf_margin (categorical): toothed (2); toothed_serrate (1) [sources: ABRS_2023; NHNSW_2023; NTH_2023]
leaf_phyllotaxis (categorical): whorled (3) [sources: ABRS_2023; NHNSW_2023; SAH_2023]
leaf_arrangement (categorical): scattered (1) [sources: SAH_2023]
plant_photosynthetic_organ (categorical): leaf (4) [sources: ABRS_2023; NHNSW_2023; NTH_2023; SAH_2023]

life history

photosynthetic_pathway (categorical): c4 (1) [sources: White_2020]
plant_growth_form (categorical): herb (6) [sources: ABRS_2022; NHNSW_2022; NTH_2022; WAH_2022_2; Wenk_2022; White_2020]
life_history (categorical): perennial (4) [sources: ABRS_2022; NHNSW_2022; WAH_2022_2; Wenk_2023]
plant_growth_substrate (categorical): aquatic (4) [sources: ABRS_2022; NHNSW_2022; SAH_2022; WAH_2022_2]
woodiness_detailed (categorical): herbaceous (5) [sources: ABRS_2022; NHNSW_2022; NTH_2022; WAH_2022_2; Wenk_2022]
stem_growth_habit (categorical): submerged (4) [sources: ABRS_2022; NHNSW_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); wind (1) [sources: Draper_2023; White_2020]
dispersal_syndrome (categorical): epizoochory (1); hydrochory (1) [sources: Draper_2023; White_2020]
dispersers (categorical): birds (1); water (1) [sources: Draper_2023; White_2020]
flowering_time (categorical): nnnnynnnnnnn (1); nnnyyyynnnnn (1); yynnnnnnnyyy (1) [sources: NHNSW_2014_2; WAH_1998; White_2020]
seedbank_longevity_class (categorical): persistent (1) [sources: White_2020]
vegetative_reproduction_ability (categorical): vegetative (1) [sources: White_2020]

seed morphology

seed_length (numerical): 2.33 mm (2-3 mm) [sources: ABRS_2023; NHNSW_2023; NTH_2023]
seed_width (numerical): 0.8 mm (0.8-0.8 mm) [sources: NTH_2023]

whole plant morphology

plant_physical_defence_structures (categorical): absent (1) [sources: White_2020]

Sources

dataset_id	n_traits	n_records	reference
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.
eFLOWER_Dun_2022	18	20	L. Dun and H. Sauquet. “Unpublished: Floral traits for GAP taxa, University of New South Wales, Australia”. 2022.
NHNSW_2023	9	11	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/.
NTH_2023	8	11	D. of Land Resource Management and N. T. of Australia. Northern Territory Flora Online. accessed on 6 May, 2022.. 2022. url: http://eflora.nt.gov.au/.
ABRS_2023	9	10	Australian Biological Resources Study. Flora of Australia, Australian Biological Resources Study, Canberra.. accessed on 14 September, 2022.. 2023. url: http://www.ausflora.org.au.
NHNSW_2022	6	6	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/.
SAH_2023	5	6	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	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/.
Draper_2023	4	4	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.
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.
Kew_2019_3	3	3	Royal Botanic Gardens Kew. Salt and water tolerance data from the Seed Information Database (SID) and Seed Bank Database. 2019. url: http://data.kew.org/sid/.
SAH_2022	3	3	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/.
NTH_2022	2	2	D. of Land Resource Management and N. T. of Australia. Northern Territory Flora Online. accessed on 6 May, 2022.. 2022. url: http://eflora.nt.gov.au/.
Wenk_2022	2	2	E. Wenk. “Unpublished data: Australian plant growth forms dataset”. 2022.
NHNSW_2014_2	1	1	Royal Botanic Gardens Sydney. PLantNET: NSW flora online. 2014. url: http://plantnet.rbgsyd.nsw.gov.au/.
WAH_1998	1	1	Western Australian Herbarium. FloraBase: The Western Australian flora. 1998. url: http://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.