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Cyperaceae taxon details

Costularia leucocarpa (Ridl.) H.Pfeiff.

1679148  (urn:lsid:marinespecies.org:taxname:1679148)

accepted
Species
terrestrial
(of Rhynchospora leucocarpa Ridl.) Ridley, H.N. (1884). Descriptions and Notes on new or rare Monocotyledonous Plants from Madagascar, with one from Angola. <em>The Journal of the Linnean Society. Botany.</em> 20: 329-338., available online at https://www.biodiversitylibrary.org/page/236907#page/336/mode/1up
page(s): 335 [details] 
Lectotype  (of Cladium fimbristyloides Baker) K...  
Lectotype (of Cladium fimbristyloides Baker) K 000244884, geounit Madagascar [details]
Lectotype K 000244883, geounit Madagascar [details]
Description Perennial herb up to c. one m tall with a woody rhizome (c. four mm diam.), caudex sometimes present (c. seven mm diam.)...  
Description Perennial herb up to c. one m tall with a woody rhizome (c. four mm diam.), caudex sometimes present (c. seven mm diam.) covered in old leaf sheaths. Culm strong but slender towards the apex, 38–60 cm × 1.9–2.6 mm diam., compressed to obtuse angled, grooved, minutely papillose. Basal leaves many, distichous; leaf sheaths brown-purplish, 3.5–4.5 cm long; leaf blades long acuminate, flat, margins scabrid. Cauline leaves 2, longest up to c. 35 cm × 3 mm, keeled, sheaths long somewhat enlarged, purplish, mouth obliquely cut. Inflorescence a semi-compound panicle, 40–70 cm long, narrow, lax, built up out of eight to nine widely spaced fascicles; inflorescence bracts leafy and much overtopping the fascicles, sheath long and brown-purplish. Peduncles unequal, up to c. 10 cm long, flattened, scabrid. Pedicels of the spikelets (2–)4–10 mm long, arched recurved, scabrid. Spikelets oblong-lanceolate, subterete, 3.8–5 × 2 mm. Glumes (5–)6(–7), distichous, ovate, subobtuse, above dark purplish, below straw-coloured, nerveless except the keel, finely ciliolate, 3–3.5 × 1.7–2.4 mm; three to five lower glumes empty, increasing in size; two upper glumes fertile. Flowers 2, lower male, upper bisexual. Perianth bristles 6, ± as long as the nutlet including its beak, tender, pale brown, antrorsely dense and shortly ciliolate, not plumose. Stamens 3, filaments and anthers reddish, anthers linear, connective short, wide pyramidal, dark purplish. Style rigid, brown, trifid, thickened at base, swollen in the middle, triquetrous, dark-purple, hairy, persistent. Nutlet 2.3–2.7 × 1.5–1.7 mm swollen-trigonous, pale, bright, smooth, hardly furrowed; beak narrow, 2–2.5 mm long. [details]

Distribution Endemic to Madagascar, found in the provinces Antananarivo, Antsiranana, Fianarantsoa, Toamasina and Toliara.  
Distribution Endemic to Madagascar, found in the provinces Antananarivo, Antsiranana, Fianarantsoa, Toamasina and Toliara. [details]

Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Ridl.) H.Pfeiff. to H.Pfeiff., information provided by Alan...  
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Ridl.) H.Pfeiff. to H.Pfeiff., information provided by Alan E. on email Oct. 12 2020 More details could be found in The Plant Li [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Costularia leucocarpa (Ridl.) H.Pfeiff.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1679148 on 2025-04-20
Date
action
by
2023-09-06 07:35:01Z
created
2024-12-10 11:47:54Z
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Nomenclature

original description (of Cladium fimbristyloides Baker) Baker, J.G. (1887). Further Contributions to the Flora of Madagascar. <em>The Journal of the Linnean Society. Botany.</em> 22: 441-537., available online at https://www.biodiversitylibrary.org/page/228766#page/1/mode/1up
page(s): 531 [details] OpenAccess publication

original description (of Rhynchospora leucocarpa Ridl.) Ridley, H.N. (1884). Descriptions and Notes on new or rare Monocotyledonous Plants from Madagascar, with one from Angola. <em>The Journal of the Linnean Society. Botany.</em> 20: 329-338., available online at https://www.biodiversitylibrary.org/page/236907#page/336/mode/1up
page(s): 335 [details] 

basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details] 

new combination reference Pfeiffer, H. (1926). Oreobolus R.Br., eine merwürdige Cyperaceengattung. <em>Repertorium specierum novarum regni vegetabilis.</em> 23: 339-353., available online at https://bibdigital.rjb.csic.es/records/item/14708-repertorium-specierum-novarum-regni-vegetabilis-fasciculus-xxiii-1926-1927?offset=
page(s): 346 [details] Available for editors  PDF available [request]

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Isolectotype (of Cladium fimbristyloides Baker) P 00459986, geounit Madagascar [details]
Isolectotype (of Rhynchospora leucocarpa Ridl.) P 00459985, geounit Madagascar [details]
Lectotype (of Cladium fimbristyloides Baker) K 000244884, geounit Madagascar [details]
Lectotype K 000244883, geounit Madagascar [details]
From editor or global species database
Description Perennial herb up to c. one m tall with a woody rhizome (c. four mm diam.), caudex sometimes present (c. seven mm diam.) covered in old leaf sheaths. Culm strong but slender towards the apex, 38–60 cm × 1.9–2.6 mm diam., compressed to obtuse angled, grooved, minutely papillose. Basal leaves many, distichous; leaf sheaths brown-purplish, 3.5–4.5 cm long; leaf blades long acuminate, flat, margins scabrid. Cauline leaves 2, longest up to c. 35 cm × 3 mm, keeled, sheaths long somewhat enlarged, purplish, mouth obliquely cut. Inflorescence a semi-compound panicle, 40–70 cm long, narrow, lax, built up out of eight to nine widely spaced fascicles; inflorescence bracts leafy and much overtopping the fascicles, sheath long and brown-purplish. Peduncles unequal, up to c. 10 cm long, flattened, scabrid. Pedicels of the spikelets (2–)4–10 mm long, arched recurved, scabrid. Spikelets oblong-lanceolate, subterete, 3.8–5 × 2 mm. Glumes (5–)6(–7), distichous, ovate, subobtuse, above dark purplish, below straw-coloured, nerveless except the keel, finely ciliolate, 3–3.5 × 1.7–2.4 mm; three to five lower glumes empty, increasing in size; two upper glumes fertile. Flowers 2, lower male, upper bisexual. Perianth bristles 6, ± as long as the nutlet including its beak, tender, pale brown, antrorsely dense and shortly ciliolate, not plumose. Stamens 3, filaments and anthers reddish, anthers linear, connective short, wide pyramidal, dark purplish. Style rigid, brown, trifid, thickened at base, swollen in the middle, triquetrous, dark-purple, hairy, persistent. Nutlet 2.3–2.7 × 1.5–1.7 mm swollen-trigonous, pale, bright, smooth, hardly furrowed; beak narrow, 2–2.5 mm long. [details]

Distribution Endemic to Madagascar, found in the provinces Antananarivo, Antsiranana, Fianarantsoa, Toamasina and Toliara. [details]

Ecology The species occurs at mid to (very) high elevation, and has been collected along mountain ridges, from thickets on rock formations, and in open forest.
Flowering specimens were collected in December–January, while fruiting specimens were collected in February and March. [details]

Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Ridl.) H.Pfeiff. to H.Pfeiff., information provided by Alan E. on email Oct. 12 2020 More details could be found in The Plant Li [details]
    Definitions

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