Cyperaceae taxon details
Carex retrorsa Schwein.
1676961 (urn:lsid:marinespecies.org:taxname:1676961)
accepted
Species
Carex lupulina var. gigantoidea Dewey · unaccepted
Carex retrorsa f. retrorsa Schwein. · unaccepted
Carex retrorsa var. gigantoides Farw. · unaccepted
Carex retrorsa var. multispicula Lepage · unaccepted
Carex retrorsa var. robinsonii Fernald · unaccepted
Carex reversa Spreng. · unaccepted
- Forma Carex retrorsa f. retrorsa Schwein. accepted as Carex retrorsa Schwein.
- Variety Carex retrorsa var. bradleyi (Dewey) Farw. accepted as Carex hartii Dewey represented as Carex ×hartii Dewey
- Variety Carex retrorsa var. gigantoides Farw. accepted as Carex retrorsa Schwein.
- Variety Carex retrorsa var. hartii (Dewey) A.Gray accepted as Carex hartii Dewey represented as Carex ×hartii Dewey
- Variety Carex retrorsa var. macounii (Dewey) Fernald accepted as Carex ×macounii Dewey
- Variety Carex retrorsa var. multispicula Lepage accepted as Carex retrorsa Schwein.
- Variety Carex retrorsa var. robinsonii Fernald accepted as Carex retrorsa Schwein.
- Variety Carex retrorsa var. gigantoidea (Dewey) Farw. (uncertain > unassessed)
terrestrial
Schweinitz, L. D. (1824). An Analytical Table to facilitate the determination of the hitherto observed North American species of the genus Carex. <em>Annals of the Lyceum of Natural History of New York.</em> 1: 62-71., available online at https://www.biodiversitylibrary.org/page/15913239#page/72/mode/1up
page(s): 71 [details]
page(s): 71 [details]
Description Plants cespitose; rhizomes very short or inconspicuous. Culms trigonous in cross section, 10–105 cm, smooth distally....
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 1: 71 1824 to Ann. Lyceum Nat. Hist....
Description Plants cespitose; rhizomes very short or inconspicuous. Culms trigonous in cross section, 10–105 cm, smooth distally. Leaves: basal sheaths dark reddish brown; ligules longer than wide; blades mid to dark green, flat to W-shaped, widest leaves 3–10 mm wide, glabrous. Inflorescences 3–20(–35) cm; proximal bract 19–70(–100) cm, (2.5–)3–9 times longer than inflorescence; proximal (2–)3–6 spikes pistillate, ascending to spreading, at least the distal erect, ca. 20–150-flowered, cylindric; terminal 1(–3) spikes staminate, slightly if at all elevated beyond summit of crowded pistillate spikes. Pistillate scales narrowly ovate, 2.4–4.5 × 1.1–1.8 mm, shorter than perigynia, margins entire, apex acute to acuminate, awnless. Perigynia mostly reflexed at maturity, often green or straw colored, strongly 6–13-veined, veins running into beak, ovate, 6–10 × (1.6–)2.1–3.4 mm, apex abruptly tapered; beak 2.1–4.5 mm, bidentulate, smooth, teeth straight, 0.3–1.1 mm. Stigmas 3. Achenes pale brown, symmetric, not indented, trigonous, smooth. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 1: 71 1824 to Ann. Lyceum Nat. Hist....
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 1: 71 1824 to Ann. Lyceum Nat. Hist. New York 1: 71 (1824), 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 retrorsa Schwein.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1676961 on 2025-09-11
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Nomenclature
original description
Schweinitz, L. D. (1824). An Analytical Table to facilitate the determination of the hitherto observed North American species of the genus Carex. <em>Annals of the Lyceum of Natural History of New York.</em> 1: 62-71., available online at https://www.biodiversitylibrary.org/page/15913239#page/72/mode/1up
page(s): 71 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 71 [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
Syntype GH 00027391, geounit United States [details]
From editor or global species database
Description Plants cespitose; rhizomes very short or inconspicuous. Culms trigonous in cross section, 10–105 cm, smooth distally. Leaves: basal sheaths dark reddish brown; ligules longer than wide; blades mid to dark green, flat to W-shaped, widest leaves 3–10 mm wide, glabrous. Inflorescences 3–20(–35) cm; proximal bract 19–70(–100) cm, (2.5–)3–9 times longer than inflorescence; proximal (2–)3–6 spikes pistillate, ascending to spreading, at least the distal erect, ca. 20–150-flowered, cylindric; terminal 1(–3) spikes staminate, slightly if at all elevated beyond summit of crowded pistillate spikes. Pistillate scales narrowly ovate, 2.4–4.5 × 1.1–1.8 mm, shorter than perigynia, margins entire, apex acute to acuminate, awnless. Perigynia mostly reflexed at maturity, often green or straw colored, strongly 6–13-veined, veins running into beak, ovate, 6–10 × (1.6–)2.1–3.4 mm, apex abruptly tapered; beak 2.1–4.5 mm, bidentulate, smooth, teeth straight, 0.3–1.1 mm. Stigmas 3. Achenes pale brown, symmetric, not indented, trigonous, smooth. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 1: 71 1824 to Ann. Lyceum Nat. Hist. New York 1: 71 (1824), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (273 publications)
To Biodiversity Heritage Library (30 publications) (from synonym Carex reversa Spreng.)
To European Nucleotide Archive, ENA (Carex retrorsa)
To International Plant Names Index (IPNI) (from synonym Carex reversa Spreng.)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex lupulina var. gigantoidea Dewey)
To International Plant Names Index (IPNI) (from synonym Carex retrorsa var. gigantoides Farw.)
To International Plant Names Index (IPNI) (from synonym Carex retrorsa var. multispicula Lepage)
To International Plant Names Index (IPNI) (from synonym Carex retrorsa var. robinsonii Fernald)
To IUCN Red List (Least Concern)
To Plants of the World Online (from synonym Carex reversa Spreng.)
To Plants of the World Online
To Plants of the World Online (from synonym Carex lupulina var. gigantoidea Dewey)
To Plants of the World Online (from synonym Carex retrorsa var. multispicula Lepage)
To Plants of the World Online (from synonym Carex retrorsa var. gigantoides Farw.)
To Plants of the World Online (from synonym Carex retrorsa var. robinsonii Fernald)
To The Plant List (from synonym Carex retrorsa f. retrorsa Schwein.)
To US Herbarium (Carex retrorsa multispicula US3099566 type 1) (from synonym Carex retrorsa var. multispicula Lepage)
To Biodiversity Heritage Library (30 publications) (from synonym Carex reversa Spreng.)
To European Nucleotide Archive, ENA (Carex retrorsa)
To International Plant Names Index (IPNI) (from synonym Carex reversa Spreng.)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex lupulina var. gigantoidea Dewey)
To International Plant Names Index (IPNI) (from synonym Carex retrorsa var. gigantoides Farw.)
To International Plant Names Index (IPNI) (from synonym Carex retrorsa var. multispicula Lepage)
To International Plant Names Index (IPNI) (from synonym Carex retrorsa var. robinsonii Fernald)
To IUCN Red List (Least Concern)
To Plants of the World Online (from synonym Carex reversa Spreng.)
To Plants of the World Online
To Plants of the World Online (from synonym Carex lupulina var. gigantoidea Dewey)
To Plants of the World Online (from synonym Carex retrorsa var. multispicula Lepage)
To Plants of the World Online (from synonym Carex retrorsa var. gigantoides Farw.)
To Plants of the World Online (from synonym Carex retrorsa var. robinsonii Fernald)
To The Plant List (from synonym Carex retrorsa f. retrorsa Schwein.)
To US Herbarium (Carex retrorsa multispicula US3099566 type 1) (from synonym Carex retrorsa var. multispicula Lepage)
From editor or global species database
Hosted externally, from synonym
