| Tetraria octandra | |
|---|---|
 | |
| Tetraria octandra male flowers | |
 | |
| Tetraria octandra female flowers | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Cyperaceae |
| Genus: | Tetraria |
| Species: | T. octandra |
| Binomial name | |
| Tetraria octandra | |
 | |
| Collections data from AVH | |
| Synonyms [3] | |
Elynanthus octandrus Nees Contents | |
Tetraria octandra is a sedge, which is native to the south-west of Western Australia. [4]
Tetraria octandra is a rhizomatous, tufted perennial, sedge which grows from 0.175 to 1.25 m high. [4] Its brown to black flowers may be seen from May to November. [4] It grows on white, grey or lateritic sand, loam, granite, graveland in swamps and on rocky hillsides. [4]
It is found in the South-West Province of Beard's classification of ecological regions, or using the more recent IBRA region definitions, in Avon Wheatbelt, Esperance Plains, Geraldton Sandplains, Jarrah Forest, Swan Coastal Plain, and Warren.
This species was first described by Nees von Esenbeck in 1841 as Elynanthus octandrus. [5] [6] In 1931, Georg Kükenthal reassigned it to the genus, Tetraria. [2] [1]
The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus Carex with over 2,000 species.
Rhynchospora alba, the white beak-sedge, is a plant in the sedge family, Cyperaceae. It is a tufted herbaceous perennial around 50 cm tall, with white inflorescences that flower in August. The fruit of the sedge is a small achene with a characteristic beak-like cap. It is dispersed by wind or falls by gravity, leading to individuals existing in tight clumps. The species favours wet, acidic and nutrient poor soils, thriving in Sphagnum-dominated bogs, but also peaty grasslands. As such it is often used as a positive indicator for bog and mire ecosystem health.
Lawrencia squamata is a species of plant in the mallow family, Malvaceae. It is endemic to Australia and occurs in all Australian states.
Tetraria is a genus of flowering plants in the sedge family, Cyperaceae, native to Tanzania, South Africa, Borneo, Australia and New Zealand.
Lepidosperma tetraquetrum is a sedge of the family Cyperaceae that is native to Southwest Australia.
Schoenus quartziticus is a species of sedge endemic to the Agulhas Plain region of southern South Africa.
Schoenus compar is a species of sedge endemic to southern South Africa.
Schoenus arenicola is a species of sedge endemic to the south-west coast of South Africa.
Schoenus megacarpus is a species of sedge endemic to the south-central region of South Africa.
Schoenus auritus is a species of sedge endemic to southern and eastern South Africa.
Schoenus prophyllus is a species of sedge endemic to the Agulhas Plain region of South Africa.
Schoenus ligulatus is a species of sedge endemic to the western regions of the Western Cape Province of South Africa.
Schoenus submarginalis is a species of sedge endemic to the mountains of the Western and Eastern Cape Provinces of South Africa.
Schoenus calceolus is a species of sedge endemic to limestone-derived soils in the Agulhas Plain region of South Africa.
Schoenus compactus is a species of sedge endemic to south-western South Africa.
Lepidosperma asperatum is a sedge that is endemic to Western Australia. It was first described in 1941 by Georg Kükenthal as Lepidosperma leptostachyum var. asperatum, but was elevated to species status in 2012 by Karen Wilson and Russell Barrett.
Schoenus aureus is a species of sedge endemic to the western mountains of the Western Cape Provinces of South Africa.
Schoenus cuspidatus is a species of sedge endemic to the Cape region of South Africa where it is found in the provinces of Western Cape and Eastern Cape.
Neesenbeckia is a monotypic genus of flowering plants belonging to the family Cyperaceae. The only species is Neesenbeckia punctoria(Vahl) Levyns.
Schoenus quadrangularis is a species of sedge endemic to mountainous of southern South Africa.