Cyperaceae taxon details
Carex arctata Boott
1677220 (urn:lsid:marinespecies.org:taxname:1677220)
accepted
Species
Carex archata Boot. · unaccepted > misspelling - incorrect subsequent spelling (Misspelled epithet in databases)
Carex arctata var. faxonii L.H.Bailey · unaccepted
Carex sylvatica Dewey · unaccepted
- Variety Carex arctata var. faxonii L.H.Bailey accepted as Carex arctata Boott
terrestrial
Hooker, W. J. (1839). Botany of the northern parts of British America. <em>Flora Boreali-Americana.</em> 2(11)., available online at https://www.biodiversitylibrary.org/page/415497#page/1/mode/1up
page(s): 227 [details]
page(s): 227 [details]
Description Plants densely cespitose. Culms dark maroon at base; flowering stems 20–100 cm, much longer than leaves at maturity,...
Description Plants densely cespitose. Culms dark maroon at base; flowering stems 20–100 cm, much longer than leaves at maturity, 0.6–1 mm thick, glabrous but scabrous within inflorescence. Leaves: basal sheaths maroon, bladeless, rarely minutely scabrous, glabrous; others grading from maroon to green on back, white to tan-hyaline on front, minutely red dotted; blades flat, 3–10(–13) mm wide, glabrous with minutely scabrous margins. Inflorescences: peduncles of lateral spikes slender, to 30 mm, shorter than spikes; peduncle of terminal spike to 28 mm, usually shorter than adjacent pistillate spikes, minutely scabrous on angles; proximal bracts shorter than inflorescences; sheaths to 30 mm; blades 2–3 mm wide. Lateral spikes 2–5, 1 per node, well separated, erect at anthesis, but soon drooping, pistillate with 15–45 perigynia attached 1–2 mm apart, linear-elongate, 25–80 × 3–4 mm. Terminal spike staminate, sessile or pedunculate, 6–40 × 0.8–2 mm. Pistillate scales white-hyaline with green midrib, oblong-lanceolate, shorter than mature perigynia, apex acuminate to cuspidate or awned, awn to 1.5 mm, margins and awn scabrous or ciliate, otherwise glabrous. Perigynia green, often red dotted, 2-ribbed and finely 10–15-veined, loosely enveloping achene, ellipsoid-ovoid, 3–5 × 1–2 mm, membranous, base with stipe 2–3 mm, apex tapering to minute beak, glabrous but sometimes ciliate between apical teeth; beak bidentate, 0.7–1.5 mm. Achenes sessile, 1.7–2.6 × 0.8–1.7 mm. 2n = 52, 54, 56. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex arctata Boott. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1677220 on 2025-09-12
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2024-12-10 11:47:54Z
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Nomenclature
original description
Hooker, W. J. (1839). Botany of the northern parts of British America. <em>Flora Boreali-Americana.</em> 2(11)., available online at https://www.biodiversitylibrary.org/page/415497#page/1/mode/1up
page(s): 227 [details]
page(s): 227 [details]
Other
additional source
Ball, P.W.; Reznicek, A.A.; Murray, D.F. (2002). Magnoliophyta: Commelinidae (in part): Cyperaceae. In: Flora of North America. Vol. 23. Oxford University Press, New York., available online at http://floranorthamerica.org/Cyperaceae [details] Available for editors 
[request]
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Additional information Occasional specimens with late-flowering stems have shorter, more crowded pistillate spikes and resemble the type specimen for Carex arctata var. faxonii, but these are anomalous within populations and not deserving of taxonomic status. Specimens lacking vegetative shoots can be misleading because the leaves of the flowering stems are usually at least 2–3 mm narrower than those of the vegetative shoots. Nearly sterile hybrids with C. castanea (= C. ×knieskernii) are sporadic, but uncommon, occurring throughout the area where the ranges of the parental species overlap. Hybrids with C. gracillima and C. virescens have also been reported; their parentage has not been confirmed. [details]Description Plants densely cespitose. Culms dark maroon at base; flowering stems 20–100 cm, much longer than leaves at maturity, 0.6–1 mm thick, glabrous but scabrous within inflorescence. Leaves: basal sheaths maroon, bladeless, rarely minutely scabrous, glabrous; others grading from maroon to green on back, white to tan-hyaline on front, minutely red dotted; blades flat, 3–10(–13) mm wide, glabrous with minutely scabrous margins. Inflorescences: peduncles of lateral spikes slender, to 30 mm, shorter than spikes; peduncle of terminal spike to 28 mm, usually shorter than adjacent pistillate spikes, minutely scabrous on angles; proximal bracts shorter than inflorescences; sheaths to 30 mm; blades 2–3 mm wide. Lateral spikes 2–5, 1 per node, well separated, erect at anthesis, but soon drooping, pistillate with 15–45 perigynia attached 1–2 mm apart, linear-elongate, 25–80 × 3–4 mm. Terminal spike staminate, sessile or pedunculate, 6–40 × 0.8–2 mm. Pistillate scales white-hyaline with green midrib, oblong-lanceolate, shorter than mature perigynia, apex acuminate to cuspidate or awned, awn to 1.5 mm, margins and awn scabrous or ciliate, otherwise glabrous. Perigynia green, often red dotted, 2-ribbed and finely 10–15-veined, loosely enveloping achene, ellipsoid-ovoid, 3–5 × 1–2 mm, membranous, base with stipe 2–3 mm, apex tapering to minute beak, glabrous but sometimes ciliate between apical teeth; beak bidentate, 0.7–1.5 mm. Achenes sessile, 1.7–2.6 × 0.8–1.7 mm. 2n = 52, 54, 56. [details]
Habitat Fruiting late spring–mid summer. Northern hemlock-hardwood forests, boreal coniferous forests, white-cedar swamps, upland, dry to mesic deciduous forests [details]
To Biodiversity Heritage Library (203 publications)
To Biodiversity Heritage Library (3 publications) (from synonym Carex archata Boot.)
To Biodiversity Heritage Library (495 publications) (from synonym Carex sylvatica Dewey)
To European Nucleotide Archive, ENA (Carex arctata)
To European Nucleotide Archive, ENA (Carex sylvatica) (from synonym Carex sylvatica Dewey)
To GenBank (27 nucleotides; 17 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex sylvatica Dewey)
To International Plant Names Index (IPNI) (from synonym Carex arctata var. faxonii L.H.Bailey)
To Plants of the World Online (from synonym Carex arctata var. faxonii L.H.Bailey)
To Plants of the World Online
To Plants of the World Online (from synonym Carex sylvatica Dewey)
To The Plant List (from synonym Carex archata Boot.)
To Biodiversity Heritage Library (3 publications) (from synonym Carex archata Boot.)
To Biodiversity Heritage Library (495 publications) (from synonym Carex sylvatica Dewey)
To European Nucleotide Archive, ENA (Carex arctata)
To European Nucleotide Archive, ENA (Carex sylvatica) (from synonym Carex sylvatica Dewey)
To GenBank (27 nucleotides; 17 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex sylvatica Dewey)
To International Plant Names Index (IPNI) (from synonym Carex arctata var. faxonii L.H.Bailey)
To Plants of the World Online (from synonym Carex arctata var. faxonii L.H.Bailey)
To Plants of the World Online
To Plants of the World Online (from synonym Carex sylvatica Dewey)
To The Plant List (from synonym Carex archata Boot.)
