Carex thouarsii
Encyclopedia
Carex thouarsii is a species of sedge
found in the Tristan da Cunha archipelago
. It lives chiefly in heath
s dominated by Blechnum palmiforme, and Phylica arborea
woodland. It is widespread and common on Tristan da Cunha
and Inaccessible Island
, but scarce on Nightingale Island
, possibly due to a lack of habitat
. It was first described
by Dugald Carmichael
in 1819 following the British annexation
of Tristan da Cunha in 1816.
Carex
Carex is a genus of plants in the family Cyperaceae, commonly known as sedges. Other members of the Cyperaceae family are also called sedges, however those of genus Carex may be called "true" sedges, and it is the most species-rich genus in the family. The study of Carex is known as...
found in the Tristan da Cunha archipelago
Geography of Tristan da Cunha
Tristan da Cunha is an archipelago of five islands in the southern Atlantic Ocean, the largest of which is the island of Tristan da Cunha itself and the second-largest the remote bird haven Gough Island...
. It lives chiefly in heath
Heath
-Habitats:* Heath or heathland, low-growing woody vegetation, mostly consisting of heathers and related species* Heaths in the British National Vegetation Classification system...
s dominated by Blechnum palmiforme, and Phylica arborea
Phylica arborea
Phylica arborea, also known as the Island Cape Myrtle, is a shrub or small tree with narrow needle-like dark green leaves, downy silver on the underside, and with greenish white terminal flowers. Usually a shrub or procumbent tree, it may reach 6–7 m in height in sheltered locations...
woodland. It is widespread and common on Tristan da Cunha
Tristan da Cunha
Tristan da Cunha is a remote volcanic group of islands in the south Atlantic Ocean and the main island of that group. It is the most remote inhabited archipelago in the world, lying from the nearest land, South Africa, and from South America...
and Inaccessible Island
Inaccessible Island
Inaccessible Island is an extinct volcano, 14 km² in area, rising out of the South Atlantic Ocean 45 km southwest of Tristan da Cunha. Inaccessible Island is located at . It is part of the archipelago of Tristan da Cunha, which is part of the overseas territory of the United Kingdom,...
, but scarce on Nightingale Island
Nightingale Island
Nightingale Island is an island in the South Atlantic Ocean, 3 km² in area, part of the Tristan da Cunha group of islands. They are administered by the United Kingdom as part of the overseas territory of Saint Helena, Ascension and Tristan da Cunha....
, possibly due to a lack of habitat
Habitat
* Habitat , a place where a species lives and grows*Human habitat, a place where humans live, work or play** Space habitat, a space station intended as a permanent settlement...
. It was first described
Alpha taxonomy
Alpha taxonomy is the discipline concerned with finding, describing and naming species of living or fossil organisms. This field is supported by institutions holding collections of these organisms, with relevant data, carefully curated: such institutes include natural history museums, herbaria and...
by Dugald Carmichael
Dugald Carmichael
Dugald Carmichael was a Scottish botanist and officer in the 72nd Highlanders. He is known as the "Father of Marine Botany". The plant genus Carmichaelia is named after him.He was a friend of Sir William Hooker.-References:...
in 1819 following the British annexation
Annexation
Annexation is the de jure incorporation of some territory into another geo-political entity . Usually, it is implied that the territory and population being annexed is the smaller, more peripheral, and weaker of the two merging entities, barring physical size...
of Tristan da Cunha in 1816.