Cyperaceae taxon details
Costularia cadetii Larridon
1680455 (urn:lsid:marinespecies.org:taxname:1680455)
accepted
Species
terrestrial
Larridon, I.; Rabarivola, L.; Xanthos, M.; Muasya, A. M. (2019). Revision of the Afro-Madagascan genus <i>Costularia</i> (Schoeneae, Cyperaceae): infrageneric relationships and species delimitation. <em>PeerJ.</em> 7: e6528., available online at https://doi.org/10.7717/peerj.6528
page(s): 17 [details] Available for editors
[request]
page(s): 17 [details] Available for editors
[request]
Holotype K 001418184, geounit Réunion
Holotype K 001418184, geounit Réunion [details]
Description Small perennial herb, flowering culm up to 28 cm, scarcely exceeding the leaves. Caudex absent or short (c. 0.5 mm wide)....
Distribution Costularia cadetii is a small perennial herb, endemic to La Réunion and found only in the Parc National de La Réunion at...
Description Small perennial herb, flowering culm up to 28 cm, scarcely exceeding the leaves. Caudex absent or short (c. 0.5 mm wide). Culm slender, 4–12.5 cm × 1.7–1.9 mm. Basal leaves distichous; leaf sheaths 2.5–2.8 cm × 6–7 mm, reddish-purplish brown; leaf blades linear, flat, 8.5–29 cm × 1.4–4 mm, scabrid on the margins. Cauline leaves absent. Inflorescence a somewhat contracted panicle, 9–15.5 × 1 cm, composed of numerous spikelets; inflorescence bracts 5, unequal, sheathing, dark reddish brown, scabrid on the margins; longest bract 8.5–13 cm × 2–3 mm. Peduncles unequal, up to four cm long, margins scabrid at least near the apex. Pedicels of the spikelets unequal, 1–12 mm long, minutely papilose, margins scabrid. Spikelets lanceolate, 4.5–5 × 1.1–2 mm, dark purple. Glumes distichous, narrowly ovate, boatshaped, acuminate to long mucronate (up to c. one mm), 3.5–4.5 × 1.8 mm, dark purple with pale lower third and pale mucro, scabrid to minutely ciliate on the margins, keel and top half of abaxial surface; two to three lower glumes empty, two upper glumes fertile. Flowers 2, both bisexual. Perianth bristles 6, pale, antoresly ciliate. Stamens 3, anthers linear, one to two mm long with short conical connective. Style deeply trifid. Nutlet rounded trigonous, obovate, dark brown with three pale bands on the ridges, base attenuate 1.3–1.5 × 0.8–0.9 mm. [details]
Distribution Costularia cadetii is a small perennial herb, endemic to La Réunion and found only in the Parc National de La Réunion at...
Distribution Costularia cadetii is a small perennial herb, endemic to La Réunion and found only in the Parc National de La Réunion at elevations of 1,700–2,400 m. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Costularia cadetii Larridon. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1680455 on 2025-04-20
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2024-12-10 11:47:54Z
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Nomenclature
original description
Larridon, I.; Rabarivola, L.; Xanthos, M.; Muasya, A. M. (2019). Revision of the Afro-Madagascan genus <i>Costularia</i> (Schoeneae, Cyperaceae): infrageneric relationships and species delimitation. <em>PeerJ.</em> 7: e6528., available online at https://doi.org/10.7717/peerj.6528
page(s): 17 [details] Available for editors [request]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 17 [details] Available for editors
[request]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
From editor or global species database
Description Small perennial herb, flowering culm up to 28 cm, scarcely exceeding the leaves. Caudex absent or short (c. 0.5 mm wide). Culm slender, 4–12.5 cm × 1.7–1.9 mm. Basal leaves distichous; leaf sheaths 2.5–2.8 cm × 6–7 mm, reddish-purplish brown; leaf blades linear, flat, 8.5–29 cm × 1.4–4 mm, scabrid on the margins. Cauline leaves absent. Inflorescence a somewhat contracted panicle, 9–15.5 × 1 cm, composed of numerous spikelets; inflorescence bracts 5, unequal, sheathing, dark reddish brown, scabrid on the margins; longest bract 8.5–13 cm × 2–3 mm. Peduncles unequal, up to four cm long, margins scabrid at least near the apex. Pedicels of the spikelets unequal, 1–12 mm long, minutely papilose, margins scabrid. Spikelets lanceolate, 4.5–5 × 1.1–2 mm, dark purple. Glumes distichous, narrowly ovate, boatshaped, acuminate to long mucronate (up to c. one mm), 3.5–4.5 × 1.8 mm, dark purple with pale lower third and pale mucro, scabrid to minutely ciliate on the margins, keel and top half of abaxial surface; two to three lower glumes empty, two upper glumes fertile. Flowers 2, both bisexual. Perianth bristles 6, pale, antoresly ciliate. Stamens 3, anthers linear, one to two mm long with short conical connective. Style deeply trifid. Nutlet rounded trigonous, obovate, dark brown with three pale bands on the ridges, base attenuate 1.3–1.5 × 0.8–0.9 mm. [details]Distribution Costularia cadetii is a small perennial herb, endemic to La Réunion and found only in the Parc National de La Réunion at elevations of 1,700–2,400 m. [details]
Ecology Found growing in rocky areas, montane grasslands and ericoid vegetation close to volcanic crater edges at high elevation.
Flowering specimens were collected in January, fruiting specimens in February and March. The specimens collected by Cadet in May had shed their glumes and nutlets, while the plants collected in November and December were vegetative or immature. [details]
To European Nucleotide Archive, ENA (Costularia cadetii)
To GBIF, Royal Botanic Gardens, Kew (Costularia cadetii K001418184 holotype 1)
To GenBank (3 nucleotides; 0 proteins)
To International Plant Names Index (IPNI)
To IUCN Red List (Endangered)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Costularia cadetii K001418184 type 1)
To GBIF, Royal Botanic Gardens, Kew (Costularia cadetii K001418184 holotype 1)
To GenBank (3 nucleotides; 0 proteins)
To International Plant Names Index (IPNI)
To IUCN Red List (Endangered)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Costularia cadetii K001418184 type 1)
