Cyperaceae taxon details
Carex oligosperma Michx.
1676642 (urn:lsid:marinespecies.org:taxname:1676642)
accepted
Species
Carex despreauxii Steud. · unaccepted
Carex oakesiana Torr. · unaccepted
Carex okesiana Dewey · unaccepted
Carex okesii Eaton · unaccepted
Carex oligosperma var. churchilliana Raymond · unaccepted
Olamblis oakesiana (Torr.) Raf. · unaccepted
- Variety Carex oligosperma var. churchilliana Raymond accepted as Carex oligosperma Michx.
- Variety Carex oligosperma var. tsuishikarensis (Koidz. & Ohwi) B.Boivin accepted as Carex tsuishikarensis Koidz. & Ohwi
terrestrial
Michaux, A. (1803). Flora boreali-americana. 2., available online at https://www.biodiversitylibrary.org/page/410840#page/3/mode/1up
page(s): 174 [details]
page(s): 174 [details]
Description Plants loosely cespitose; rhizomes long. Culms obtusely trigonous in cross section, 30–90 cm, smooth or scabrous-angled...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. Bor.-Amer. 2: 174 1803 to Fl. Bor.-Amer. 2: 174 (1803),...
Description Plants loosely cespitose; rhizomes long. Culms obtusely trigonous in cross section, 30–90 cm, smooth or scabrous-angled distally. Leaves: basal sheaths reddish purple; ligules as wide as long to wider than long; blades dark green, wiry, filiform, with involute margins, 0.5–2.5 mm wide, glabrous. Inflorescences 3–20 cm; proximal bract 3–15(–25) cm, shorter than to exceeding inflorescence; proximal 1–2 spikes pistillate, erect, ovoid to cylindric; terminal 1(–2) spikes staminate. Pistillate scales ovate, 3.2–5.6 × 2.6–3.8 mm, shorter than perigynia, margins entire, apex obtuse to acute, awnless. Perigynia ascending, 7–15-veined, veins extending into beak, ovate, 4–6.7 × 2.5–3.4 mm, leathery, apex tapered; beak 0.3–0.9 mm, obscurely bidentulate, glabrous, teeth straight to somewhat outcurved, to 0.3 mm. Stigmas 3. Achenes brown, trigonous, smooth. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. Bor.-Amer. 2: 174 1803 to Fl. Bor.-Amer. 2: 174 (1803),...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. Bor.-Amer. 2: 174 1803 to Fl. Bor.-Amer. 2: 174 (1803), 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. Carex oligosperma Michx.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1676642 on 2025-09-12
Date
action
by
2024-12-10 11:47:54Z
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Nomenclature
original description
Michaux, A. (1803). Flora boreali-americana. 2., available online at https://www.biodiversitylibrary.org/page/410840#page/3/mode/1up
page(s): 174 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 174 [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
Isotype P 00313024, geounit Canada [details]
From editor or global species database
Description Plants loosely cespitose; rhizomes long. Culms obtusely trigonous in cross section, 30–90 cm, smooth or scabrous-angled distally. Leaves: basal sheaths reddish purple; ligules as wide as long to wider than long; blades dark green, wiry, filiform, with involute margins, 0.5–2.5 mm wide, glabrous. Inflorescences 3–20 cm; proximal bract 3–15(–25) cm, shorter than to exceeding inflorescence; proximal 1–2 spikes pistillate, erect, ovoid to cylindric; terminal 1(–2) spikes staminate. Pistillate scales ovate, 3.2–5.6 × 2.6–3.8 mm, shorter than perigynia, margins entire, apex obtuse to acute, awnless. Perigynia ascending, 7–15-veined, veins extending into beak, ovate, 4–6.7 × 2.5–3.4 mm, leathery, apex tapered; beak 0.3–0.9 mm, obscurely bidentulate, glabrous, teeth straight to somewhat outcurved, to 0.3 mm. Stigmas 3. Achenes brown, trigonous, smooth. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. Bor.-Amer. 2: 174 1803 to Fl. Bor.-Amer. 2: 174 (1803), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (1 publication) (from synonym Carex okesii Eaton)
To Biodiversity Heritage Library (173 publications)
To Biodiversity Heritage Library (5 publications) (from synonym Carex oakesiana Torr.)
To European Nucleotide Archive, ENA (Carex oligosperma)
To GenBank (15 nucleotides; 6 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Olamblis oakesiana (Torr.) Raf.)
To International Plant Names Index (IPNI) (from synonym Carex despreauxii Steud.)
To International Plant Names Index (IPNI) (from synonym Carex okesiana Dewey)
To International Plant Names Index (IPNI) (from synonym Carex oakesiana Torr.)
To International Plant Names Index (IPNI) (from synonym Carex okesii Eaton)
To International Plant Names Index (IPNI) (from synonym Carex oligosperma var. churchilliana Raymond)
To IUCN Red List (Least Concern)
To New York Botanical Garden Steere Herbarium (Carex_oakesiana_NY11249_type_1) (from synonym Carex oakesiana Torr.)
To Plants of the World Online (from synonym Carex okesiana Dewey)
To Plants of the World Online (from synonym Carex oakesiana Torr.)
To Plants of the World Online (from synonym Carex okesii Eaton)
To Plants of the World Online (from synonym Olamblis oakesiana (Torr.) Raf.)
To Plants of the World Online (from synonym Carex despreauxii Steud.)
To Plants of the World Online
To Plants of the World Online (from synonym Carex oligosperma var. churchilliana Raymond)
To Biodiversity Heritage Library (173 publications)
To Biodiversity Heritage Library (5 publications) (from synonym Carex oakesiana Torr.)
To European Nucleotide Archive, ENA (Carex oligosperma)
To GenBank (15 nucleotides; 6 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Olamblis oakesiana (Torr.) Raf.)
To International Plant Names Index (IPNI) (from synonym Carex despreauxii Steud.)
To International Plant Names Index (IPNI) (from synonym Carex okesiana Dewey)
To International Plant Names Index (IPNI) (from synonym Carex oakesiana Torr.)
To International Plant Names Index (IPNI) (from synonym Carex okesii Eaton)
To International Plant Names Index (IPNI) (from synonym Carex oligosperma var. churchilliana Raymond)
To IUCN Red List (Least Concern)
To New York Botanical Garden Steere Herbarium (Carex_oakesiana_NY11249_type_1) (from synonym Carex oakesiana Torr.)
To Plants of the World Online (from synonym Carex okesiana Dewey)
To Plants of the World Online (from synonym Carex oakesiana Torr.)
To Plants of the World Online (from synonym Carex okesii Eaton)
To Plants of the World Online (from synonym Olamblis oakesiana (Torr.) Raf.)
To Plants of the World Online (from synonym Carex despreauxii Steud.)
To Plants of the World Online
To Plants of the World Online (from synonym Carex oligosperma var. churchilliana Raymond)
From editor or global species database
Hosted externally, from synonym
