Cyperaceae taxon details
Costularia purpurea Cherm.
1679154 (urn:lsid:marinespecies.org:taxname:1679154)
accepted
Species
Costularia laxa Cherm. · unaccepted
Tetraria laxa (Cherm.) T.Koyama · unaccepted
Tetraria purpurea (Cherm.) T.Koyama · unaccepted
terrestrial
Chermezon,H. (1922). Sur quelques Cypéracées nouvelles de Madagascar. <em>Bulletin de la Société botanique de France.</em> 69: 719-725., available online at https://www.biodiversitylibrary.org/page/29406458#page/757/mode/1up
page(s): 722 [details]
page(s): 722 [details]
Lectotype (of Costularia laxa Cherm.) P 00459983,...
Lectotype (of Costularia laxa Cherm.) P 00459983, geounit Madagascar [details]
Lectotype P 00459990, geounit Madagascar [details]
Description Perennial herb up to 2.5 m tall. Caudex covered in lateral roots can be present (0.7–1.5 cm in diam.). Culms more or less...
Distribution Costularia purpurea is endemic to Madagascar, occurring in the Antananarivo, Antsiranana, Fianarantsoa, Toamasina and...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bull. Soc. Bot. France 69: 722. 1923 [1922 publ. 1923] to Bull. Soc....
Description Perennial herb up to 2.5 m tall. Caudex covered in lateral roots can be present (0.7–1.5 cm in diam.). Culms more or less robust, 50–1.3 m × 2.5–4 mm. Basal leaves distichous; leaf sheaths 3.5–8.5 cm × up to 9 mm, brownish-purple; leaf blades leathery, (28–)50–80 cm × 3–8 mm, flat or slightly inrolled, margins scabrid, tapering to a very acute tip. Cauline leaves 3–4, far apart; sheaths long tubular, purplish or brownish-green, mouth obliquely cut. Inflorescence a quite narrow panicle with lax partial inflorescences to a lax complex panicle, 50–90(–165) cm long; inflorescence bracts 8–14; sheaths purple. Peduncles unequal, up to 13 cm, flattened, margins scabrid. Pedicels of the spikelets 5–10(–25) mm flattened, margins scabrid, straight or curved. Spikelets oblong-lanceolate, very flattened, (4–)6–10 × (1.2–)2 mm. Glumes (dark) purple, ovate-lanceolate, (sub)acute, keel scabrid, edges minutely ciliate, (3–)5–9 lower glumes empty, two upper fertile, largest 4–5.5 mm long. Flowers (1–)2, either both bisexual (generally only lower perfecting a nutlet), or lower bisexual and upper functionally male, more rarely lower male and upper bisexual, or rarely a single bisexual flower. Perianth bristles 6, equalling or surpassing the nutlet, pale reddish-brown, plumose below, densely and shortly ciliolate above. Stamens 3; anthers linear, reddish, connective very shortly apiculate. Style long, deeply trifid, thin, brownish; style base triangular, hispidulous, pale, persistent. Nutlet rounded-trigonous, (1.5–)2–3 mm × 1–1.5 mm, greyish-brown, rugulose- reticulate, with an attenuate base; beak (1–)1.5–2.5 mm long, base as wide as the nutlet. [details]
Distribution Costularia purpurea is endemic to Madagascar, occurring in the Antananarivo, Antsiranana, Fianarantsoa, Toamasina and...
Distribution Costularia purpurea is endemic to Madagascar, occurring in the Antananarivo, Antsiranana, Fianarantsoa, Toamasina and Toliara provinces. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bull. Soc. Bot. France 69: 722. 1923 [1922 publ. 1923] to Bull. Soc....
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bull. Soc. Bot. France 69: 722. 1923 [1922 publ. 1923] to Bull. Soc. Bot. France 69: 722 (1922 publ. 1923), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Costularia purpurea Cherm.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1679154 on 2025-04-20
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
original description
Chermezon,H. (1922). Sur quelques Cypéracées nouvelles de Madagascar. <em>Bulletin de la Société botanique de France.</em> 69: 719-725., available online at https://www.biodiversitylibrary.org/page/29406458#page/757/mode/1up
page(s): 722 [details]
original description (of Costularia laxa Cherm.) Chermezon,H. (1922). Sur quelques Cypéracées nouvelles de Madagascar. <em>Bulletin de la Société botanique de France.</em> 69: 719-725., available online at https://www.biodiversitylibrary.org/page/29406458#page/757/mode/1up
page(s): 723 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 722 [details]
original description (of Costularia laxa Cherm.) Chermezon,H. (1922). Sur quelques Cypéracées nouvelles de Madagascar. <em>Bulletin de la Société botanique de France.</em> 69: 719-725., available online at https://www.biodiversitylibrary.org/page/29406458#page/757/mode/1up
page(s): 723 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Present Inaccurate Introduced: alien Containing type locality
Lectotype (of Costularia laxa Cherm.) P 00459983, geounit Madagascar [details]
Lectotype P 00459990, geounit Madagascar [details]
From editor or global species database
Description Perennial herb up to 2.5 m tall. Caudex covered in lateral roots can be present (0.7–1.5 cm in diam.). Culms more or less robust, 50–1.3 m × 2.5–4 mm. Basal leaves distichous; leaf sheaths 3.5–8.5 cm × up to 9 mm, brownish-purple; leaf blades leathery, (28–)50–80 cm × 3–8 mm, flat or slightly inrolled, margins scabrid, tapering to a very acute tip. Cauline leaves 3–4, far apart; sheaths long tubular, purplish or brownish-green, mouth obliquely cut. Inflorescence a quite narrow panicle with lax partial inflorescences to a lax complex panicle, 50–90(–165) cm long; inflorescence bracts 8–14; sheaths purple. Peduncles unequal, up to 13 cm, flattened, margins scabrid. Pedicels of the spikelets 5–10(–25) mm flattened, margins scabrid, straight or curved. Spikelets oblong-lanceolate, very flattened, (4–)6–10 × (1.2–)2 mm. Glumes (dark) purple, ovate-lanceolate, (sub)acute, keel scabrid, edges minutely ciliate, (3–)5–9 lower glumes empty, two upper fertile, largest 4–5.5 mm long. Flowers (1–)2, either both bisexual (generally only lower perfecting a nutlet), or lower bisexual and upper functionally male, more rarely lower male and upper bisexual, or rarely a single bisexual flower. Perianth bristles 6, equalling or surpassing the nutlet, pale reddish-brown, plumose below, densely and shortly ciliolate above. Stamens 3; anthers linear, reddish, connective very shortly apiculate. Style long, deeply trifid, thin, brownish; style base triangular, hispidulous, pale, persistent. Nutlet rounded-trigonous, (1.5–)2–3 mm × 1–1.5 mm, greyish-brown, rugulose- reticulate, with an attenuate base; beak (1–)1.5–2.5 mm long, base as wide as the nutlet. [details]Distribution Costularia purpurea is endemic to Madagascar, occurring in the Antananarivo, Antsiranana, Fianarantsoa, Toamasina and Toliara provinces. [details]
Ecology The species is found infrequent on granitic formations in ericaceous shrubland, grassland and open forests at mid to high elevations (500–1,850 m).
Flowering/fruiting specimens were collected from November to May. Young inflorescences can be observed on the specimens collected in September–October, while old inflorescences remain on the plants until September. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bull. Soc. Bot. France 69: 722. 1923 [1922 publ. 1923] to Bull. Soc. Bot. France 69: 722 (1922 publ. 1923), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (3 publications) (from synonym Costularia laxa Cherm.)
To Biodiversity Heritage Library (4 publications) (from synonym Tetraria purpurea (Cherm.) T.Koyama)
To Biodiversity Heritage Library (4 publications)
To European Nucleotide Archive, ENA (Costularia laxa) (from synonym Costularia laxa Cherm.)
To European Nucleotide Archive, ENA (Costularia purpurea)
To GenBank (8 nucleotides; 0 proteins) (from synonym Costularia laxa Cherm.)
To GenBank (9 nucleotides; 0 proteins)
To Genève Herbarium (Costularia purpurea G00341381 syntype 1)
To International Plant Names Index (IPNI) (from synonym Costularia laxa Cherm.)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Tetraria purpurea (Cherm.) T.Koyama)
To International Plant Names Index (IPNI) (from synonym Tetraria laxa (Cherm.) T.Koyama)
To IUCN Red List (Least Concern)
To Muséum National d'Histoire Naturelle, Paris (Costularia laxa P00459982 syntype 1) (from synonym Costularia laxa Cherm.)
To Muséum National d'Histoire Naturelle, Paris (Costularia laxa P00459983 lectotype 1) (from synonym Costularia laxa Cherm.)
To Muséum National d'Histoire Naturelle, Paris (Costularia laxa P00459984 isolectotype 1) (from synonym Costularia laxa Cherm.)
To Muséum National d'Histoire Naturelle, Paris (Costularia laxa var. macrantha P00459981 syntype 1) (from synonym Costularia laxa Cherm.)
To Muséum National d'Histoire Naturelle, Paris (Costularia purpurea P00459990 lectotype 1)
To Muséum National d'Histoire Naturelle, Paris (Costularia purpurea P00459991 isolectotype 1)
To Muséum National d'Histoire Naturelle, Paris (Costularia purpurea P00459992 isolectotype 2)
To Muséum National d'Histoire Naturelle, Paris (Costularia purpurea P00459993 syntype 1)
To Muséum National d'Histoire Naturelle, Paris (Costularia purpurea P00459994 syntype 1)
To Plants of the World Online
To Plants of the World Online (from synonym Tetraria laxa (Cherm.) T.Koyama)
To Plants of the World Online (from synonym Costularia laxa Cherm.)
To Plants of the World Online (from synonym Tetraria purpurea (Cherm.) T.Koyama)
To Biodiversity Heritage Library (4 publications) (from synonym Tetraria purpurea (Cherm.) T.Koyama)
To Biodiversity Heritage Library (4 publications)
To European Nucleotide Archive, ENA (Costularia laxa) (from synonym Costularia laxa Cherm.)
To European Nucleotide Archive, ENA (Costularia purpurea)
To GenBank (8 nucleotides; 0 proteins) (from synonym Costularia laxa Cherm.)
To GenBank (9 nucleotides; 0 proteins)
To Genève Herbarium (Costularia purpurea G00341381 syntype 1)
To International Plant Names Index (IPNI) (from synonym Costularia laxa Cherm.)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Tetraria purpurea (Cherm.) T.Koyama)
To International Plant Names Index (IPNI) (from synonym Tetraria laxa (Cherm.) T.Koyama)
To IUCN Red List (Least Concern)
To Muséum National d'Histoire Naturelle, Paris (Costularia laxa P00459982 syntype 1) (from synonym Costularia laxa Cherm.)
To Muséum National d'Histoire Naturelle, Paris (Costularia laxa P00459983 lectotype 1) (from synonym Costularia laxa Cherm.)
To Muséum National d'Histoire Naturelle, Paris (Costularia laxa P00459984 isolectotype 1) (from synonym Costularia laxa Cherm.)
To Muséum National d'Histoire Naturelle, Paris (Costularia laxa var. macrantha P00459981 syntype 1) (from synonym Costularia laxa Cherm.)
To Muséum National d'Histoire Naturelle, Paris (Costularia purpurea P00459990 lectotype 1)
To Muséum National d'Histoire Naturelle, Paris (Costularia purpurea P00459991 isolectotype 1)
To Muséum National d'Histoire Naturelle, Paris (Costularia purpurea P00459992 isolectotype 2)
To Muséum National d'Histoire Naturelle, Paris (Costularia purpurea P00459993 syntype 1)
To Muséum National d'Histoire Naturelle, Paris (Costularia purpurea P00459994 syntype 1)
To Plants of the World Online
To Plants of the World Online (from synonym Tetraria laxa (Cherm.) T.Koyama)
To Plants of the World Online (from synonym Costularia laxa Cherm.)
To Plants of the World Online (from synonym Tetraria purpurea (Cherm.) T.Koyama)
