''Costularia'' is a plant genus in the family

Cyperaceae 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'' w ...

.Kew World Checklist of Selected Plant Families
/ref>Strugnell, A.M. (2006). A checklist of the Spermatophytes of Mt. Mulanje, Malawi. Scripta Botanica Belgica 34: 1-199. It includes 15 species native to southeastern Africa, ranging from South Africa (

KwaZulu-Natal KwaZulu-Natal (, also referred to as KZN and known as "the garden province") is a province of South Africa that was created in 1994 when the Zulu bantustan of KwaZulu ("Place of the Zulu" in Zulu) and Natal Province were merged. It is locate ...

and Northern Provinces) through Eswatini, Mozambique, Zimbabwe, and Malawi, and to the islands Madagascar,

Réunion Réunion (; french: La Réunion, ; previously ''Île Bourbon''; rcf, label= Reunionese Creole, La Rényon) is an island in the Indian Ocean that is an overseas department and region of France. It is located approximately east of the island ...

, and the Seychelles in the Western Indian Ocean.Larridon I, Rabarivola L, Xanthos M, Muasya AM. 2019. Revision of the Afro-Madagascan genus Costularia (Schoeneae, Cyperaceae): infrageneric relationships and species delimitation. ''PeerJ'' 7:e6528 https://doi.org/10.7717/peerj.6528 The genus was formerly circumscribed to include 25 species. A molecular phylogenetic study found that circumscription to include four distinct lineages: # ''Costularia s.s.'' (11 species) from Africa, Madagascar, the

Mascarene Islands The Mascarene Islands (, ) or Mascarenes or Mascarenhas Archipelago is a group of islands in the Indian Ocean east of Madagascar consisting of the islands belonging to the Republic of Mauritius as well as the French department of Réunion. Thei ...

and Seychelles. # '' Chamaedendron'' (five species) from

New Caledonia ) , anthem = "" , image_map = New Caledonia on the globe (small islands magnified) (Polynesia centered).svg , map_alt = Location of New Caledonia , map_caption = Location of New Caledonia , mapsize = 290px , subdivision_type = Sovereign st ...

. # a group largely conforming to subgenus ''Lophoschoenus'' (eight species) from New Caledonia and Malesia that are now considered to be part of a redelimited genus ''

Tetraria ''Tetraria'' is a genus of flowering plants in the sedge family, Cyperaceae, native to Tanzania, South Africa, Borneo, Australia and New Zealand. The type species is '' Tetraria compar'' (L.) P.Beauv. Recent molecular work has shown that ''Tetr ...

''. # the species '' Xyroschoenus hornei'', which is endemic to the Seychelles. In 2019, the genus was revised to include 15 species, generally corresponding to ''Costularia s.s.'' and including a few previously undescribed species.

List of species

15 species are accepted: *'' Costularia andringitrensis'' Larridon *'' Costularia brevifolia'' Cherm. *''

Costularia cadetii ''Costularia cadetii'' is a perennial herb that grows near the rim of volcanoes in Réunion, which is located to the east of Madagascar in the Indian Ocean. It was discovered in 1965 but more evidence was required: it was named ''Costularia cadetii ...

'' Larridon *'' Costularia humbertii''

Bosser Bosser is a surname. It derives from ''bosser'', a Breton word meaning "butcher". Notable people with the surname include: *Jean Marie Bosser (1922–2013), French botanist * Jean-Pierre Bosser (born 1959), French army general * Jean-Pierre Bosser ...

*'' Costularia itremoensis'' *'' Costularia laxa'' Cherm. *'' Costularia leucocarpa'' (

Ridl. Henry Nicholas Ridley CMG (1911), MA (Oxon), FRS, FLS, F.R.H.S. (10 December 1855 – 24 October 1956) was an English botanist, geologist and naturalist who lived much of his life in Singapore. He was instrumental in promoting rubber trees ...

)

Pfeiff. Ludwig Karl Georg Pfeiffer, also known as Louis Pfeiffer (4 July 1805 – 2 October 1877), was a German physician, botanist and conchologist. Early life, Education & Medical Career Louis Pfeiffer was born in Cassel, the eldest son of the jurist ...

*''

Costularia melicoides ''Costularia'' is a plant genus in the family Cyperaceae.Strugnell, A.M. (2006). A checklist of the Spermatophytes of Mt. Mulanje, Malawi. Scripta Botanica Belgica 34: 1-199. It includes 15 species native to southeastern Africa, ranging from Sout ...

'' (

Poir. Jean Louis Marie Poiret (11 June 1755 in Saint-Quentin7 April 1834 in Paris) was a French clergyman, botanist, and explorer. From 1785 to 1786, he was sent by Louis XVI to Algeria to study the flora. After the French Revolution, he became a ...

) C.B.Clarke *'' Costularia melleri'' (

Baker A baker is a tradesperson who bakes and sometimes sells breads and other products made of flour by using an oven or other concentrated heat source. The place where a baker works is called a bakery. History Ancient history Since grains ha ...

) C.B.Clarke *''

Costularia microcarpa ''Costularia'' is a plant genus in the family Cyperaceae.Strugnell, A.M. (2006). A checklist of the Spermatophytes of Mt. Mulanje, Malawi. Scripta Botanica Belgica 34: 1-199. It includes 15 species native to southeastern Africa, ranging from Sout ...

'' ( Cherm.) Kük. *''

Costularia natalensis ''Costularia'' is a plant genus in the family Cyperaceae.Strugnell, A.M. (2006). A checklist of the Spermatophytes of Mt. Mulanje, Malawi. Scripta Botanica Belgica 34: 1-199. It includes 15 species native to southeastern Africa, ranging from Sout ...

'' C.B.Clarke *'' Costularia pantopoda'' (

) C.B.Clarke *'' Costularia purpurea'' Cherm. *'' Costularia robusta'' (Cherm.) Larridon *'' Costularia xipholepis'' (Baker) Henriette & Senterre

Formerly placed here

'' Xyroschoenus hornei'' (as ''Costularia hornei'' ( C.B.Clarke) Kük.)

References

Cyperaceae Cyperaceae genera Afrotropical realm flora Taxa named by Charles Baron Clarke {{Cyperaceae-stub