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Trithuria australis
Species of aquatic plant From Wikipedia, the free encyclopedia
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Trithuria australis is a species of aquatic plant in the family Hydatellaceae endemic to Western Australia.[1]
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Description
Vegetative characteristics
Trithuria australis is an annual,[2] submerged aquatic plant. The terete, pointed leaves are 20–25 mm long, and 0.3 mm wide.[3]
Generative characteristics
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]
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Cytology
The chromosome count is 2n = 14.[5]
Distribution
It is known from several populations[5] occurring in the Western and Southwestern parts of the state Western Australia.[2]
Taxonomy
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]
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Etymology
Ecology
Habitat
It grows in swamps. It occurs sympatrically with Centrolepis.[4]
References
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