| Trithuria australis | |
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| Botanical illustration of Trithuria australis | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Order: | Nymphaeales |
| Family: | Hydatellaceae |
| Genus: | Trithuria |
| Section: | Trithuria sect. Hydatella |
| Species: | T. australis |
| Binomial name | |
| Trithuria australis | |
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| Trithuria australis is endemic to Western Australia [1] | |
| Synonyms [1] | |
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Trithuria australis is a species of aquatic plant in the family Hydatellaceae endemic to Western Australia. [1]
Trithuria australis is an annual, [2] submerged aquatic plant. The terete, pointed leaves are 20–25 mm long, and 0.3 mm wide. [3]
The reproductive units ("flowers") are unisexual. Both female and male reproductive units are present on the same plant. [2] The reproductive units are sessile or exhibit very short peduncles. [4] The male reproductive unit has 3-8 stamens. [2] The seed coat is brown [3] and smooth. [2] It is believed to be self-pollinating. [4] [5] [6]
The chromosome count is 2n = 14. [5]
It is known from several populations [5] occurring in the Western and Southwestern parts of the state Western Australia. [2]
Trithuria australis (Diels) D.D.Sokoloff, Remizowa, T.D.Macfarl. & Rudall was first described as Hydatella australis Diels by Friedrich Ludwig Emil Diels in 1904. [1] [3] Later it was included in the genus Trithuria Hook.f. as Trithuria australis (Diels) D.D.Sokoloff, Remizowa, T.D.Macfarl. & Rudall by Dmitry Dmitrievich Sokoloff, Margarita Vasilyena Remizowa, Terry Desmond Macfarlane & Paula J. Rudall in 2008. [1] [2] The type specimen was collected by L. Diels in Hamersley River, Western Australia in October 1901. [2] It is included in Trithuria sect. Hydatella (Diels) D.D. Sokoloff, Iles, Rudall & S.W. Graham, of which it is the type species. [5]
It grows in swamps. It occurs sympatrically with Centrolepis . [4]