Cyperaceae taxon details
Carex assiniboinensis W.Boott
1677247 (urn:lsid:marinespecies.org:taxname:1677247)
accepted
Species
Carex assiniboinensis f. ambulans J.-P.Bernard · unaccepted
Carex assiniboinensis f. assiniboinensis W.Boott · unaccepted
- Forma Carex assiniboinensis f. ambulans J.-P.Bernard accepted as Carex assiniboinensis W.Boott
- Forma Carex assiniboinensis f. assiniboinensis W.Boott accepted as Carex assiniboinensis W.Boott
terrestrial
Boott, W. (1884). Notes on Cyperaceae. <em>Botanical Gazette.</em> 9(6): 85-94., available online at https://www.biodiversitylibrary.org/page/28543730#page/90/mode/1up
page(s): 91 [details]
page(s): 91 [details]
Description Plants densely cespitose, also producing long-arching stolons that root at the tip and form new plants. Culms dark maroon...
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from W.Boott to W.Boott., information provided by Alan E. on...
Description Plants densely cespitose, also producing long-arching stolons that root at the tip and form new plants. Culms dark maroon at base; flowering stems 35–75 cm, longer than leaves at maturity, 0.5–0.8 mm thick, glabrous or minutely scabrous on angles, especially within inflorescence. Leaves: basal sheaths maroon, bladeless, glabrousl; others grading from maroon to green on back, pale hyaline on front; blades flat, 1–3 mm wide, glabrous on adaxial surface, often strigose on abaxial surface, margins and midribs of abaxial surface scabrous at distal end. Inflorescences: peduncles of lateral spikess 20–60 mm, glabrous; peduncle of ternimal spike 40–60 mm, glabrous or minutely scabrous on angles; proximal bracts much shorter than inflorescence; sheaths 15–25 mm; blades 1.5–2.2 mm wide. Lateral spikes 2–5, pistillate with fewer than 10 perigynia attached 3–15 mm apart, 1 spike per node, well separated, erect or drooping, linear, 5–30 × 3–5 mm; distal spikes sometimes staminate and shorter than terminal spike. Terminal spike staminate, 11–30 × 1.5–3 mm. Pistillate scales pale hyaline, often partially suffused with chestnut brown, with narrow green midrib, lanceolate to oblong, shorter than mature pergiynia, apex cuspidate or acuminate with serrulate green awn 1–3 mm, glabrous. Perigynia green, at least body maturing to yellow, 2-ribbed but not obviously otherwise veined, except sometimes near base, tightly enveloping achene, lance-ellipsoid, 5–6.5 × 0.8–1.8 mm, cartilaginous, base with stipe 0.5 mm, apex tapering gradually to beak, short-pubescent; beak oblique to minutely toothed, 2.5 mm. Achenes stipitate, 1.8–2.5 × 0.7–1 mm, stipe adnate to thickened perigynium base, breaking from achene at maturity. 2n = 32. [details]
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from W.Boott to W.Boott., information provided by Alan E. on...
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from W.Boott to W.Boott., information provided by Alan E. on email Oct. 12 2020 More details could be found in The Plant List v.1.1. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex assiniboinensis W.Boott. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1677247 on 2025-09-11
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2024-12-10 11:47:54Z
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Nomenclature
original description
Boott, W. (1884). Notes on Cyperaceae. <em>Botanical Gazette.</em> 9(6): 85-94., available online at https://www.biodiversitylibrary.org/page/28543730#page/90/mode/1up
page(s): 91 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 91 [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 US 00026801, geounit Manitoba [details]
From editor or global species database
Description Plants densely cespitose, also producing long-arching stolons that root at the tip and form new plants. Culms dark maroon at base; flowering stems 35–75 cm, longer than leaves at maturity, 0.5–0.8 mm thick, glabrous or minutely scabrous on angles, especially within inflorescence. Leaves: basal sheaths maroon, bladeless, glabrousl; others grading from maroon to green on back, pale hyaline on front; blades flat, 1–3 mm wide, glabrous on adaxial surface, often strigose on abaxial surface, margins and midribs of abaxial surface scabrous at distal end. Inflorescences: peduncles of lateral spikess 20–60 mm, glabrous; peduncle of ternimal spike 40–60 mm, glabrous or minutely scabrous on angles; proximal bracts much shorter than inflorescence; sheaths 15–25 mm; blades 1.5–2.2 mm wide. Lateral spikes 2–5, pistillate with fewer than 10 perigynia attached 3–15 mm apart, 1 spike per node, well separated, erect or drooping, linear, 5–30 × 3–5 mm; distal spikes sometimes staminate and shorter than terminal spike. Terminal spike staminate, 11–30 × 1.5–3 mm. Pistillate scales pale hyaline, often partially suffused with chestnut brown, with narrow green midrib, lanceolate to oblong, shorter than mature pergiynia, apex cuspidate or acuminate with serrulate green awn 1–3 mm, glabrous. Perigynia green, at least body maturing to yellow, 2-ribbed but not obviously otherwise veined, except sometimes near base, tightly enveloping achene, lance-ellipsoid, 5–6.5 × 0.8–1.8 mm, cartilaginous, base with stipe 0.5 mm, apex tapering gradually to beak, short-pubescent; beak oblique to minutely toothed, 2.5 mm. Achenes stipitate, 1.8–2.5 × 0.7–1 mm, stipe adnate to thickened perigynium base, breaking from achene at maturity. 2n = 32. [details]Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from W.Boott to W.Boott., information provided by Alan E. on email Oct. 12 2020 More details could be found in The Plant List v.1.1. [details]
To Biodiversity Heritage Library (28 publications)
To European Nucleotide Archive, ENA (Carex assiniboinensis)
To GenBank (11 nucleotides; 6 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex assiniboinensis f. ambulans J.-P.Bernard)
To Plants of the World Online
To Plants of the World Online (from synonym Carex assiniboinensis f. ambulans J.-P.Bernard)
To The Plant List (from synonym Carex assiniboinensis f. assiniboinensis W.Boott)
To US Herbarium (Carex assiniboinensis ambulans US2421958 type 1) (from synonym Carex assiniboinensis f. ambulans J.-P.Bernard)
To US Herbarium (Carex assiniboinensis ambulans US3102776 type 1) (from synonym Carex assiniboinensis f. ambulans J.-P.Bernard)
To European Nucleotide Archive, ENA (Carex assiniboinensis)
To GenBank (11 nucleotides; 6 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex assiniboinensis f. ambulans J.-P.Bernard)
To Plants of the World Online
To Plants of the World Online (from synonym Carex assiniboinensis f. ambulans J.-P.Bernard)
To The Plant List (from synonym Carex assiniboinensis f. assiniboinensis W.Boott)
To US Herbarium (Carex assiniboinensis ambulans US2421958 type 1) (from synonym Carex assiniboinensis f. ambulans J.-P.Bernard)
To US Herbarium (Carex assiniboinensis ambulans US3102776 type 1) (from synonym Carex assiniboinensis f. ambulans J.-P.Bernard)
