Cyperaceae taxon details
Carex reznicekii Werier
1676964 (urn:lsid:marinespecies.org:taxname:1676964)
accepted
Species
terrestrial
Werier, D. A. (2006). Carex reznicekii, a new widespread species of Carex section Acrocystis (Cyperaceae) from Eastern North America. <em>Sida, Contributions to Botany.</em> 22(2): 1049-1070.
page(s): 1052 [details] Available for editors
[request]
page(s): 1052 [details] Available for editors
[request]
Holotype BH
, geounit Virginia
, geounit Virginia
Holotype BH
, geounit Virginia [details]
, geounit Virginia [details]
Description Densely caespitose, herbaceous, evergreen perennial. Rhizomes horizontal, ascending, or erect, 0.1-3.8 mm...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Sida 22(2): 1052 (1049-1070; figs. 1-6; tables 1-5). 2006 [23 Nov 2006] to...
Description Densely caespitose, herbaceous, evergreen perennial. Rhizomes horizontal, ascending, or erect, 0.1-3.8 mm longbetweenshootsorbranchesof the rhizomes, 0.6-1.2 mm wide with leaf sheaths absent, enclosed by leaf sheaths and/or cataphylls, which disintegrate into long fibers. Vegetative shootserect to ascending, arising from buds at the tipor side of the rhizomes, or directly from the apical meristem of rhizomes or previous year's vegetative shoots; bases consisting of cataphylls or leaf sheathes which disintegrate into long fibers;pseudoculms(represented byleaf sheaths) 1.2-7.6 cm long. Reproductive shoots erect, mostly produced directly from the apical meristem of vegetative shoots or rhizomes, or less frequently produced from buds at tip or side of rhizomes, bases mostly surrounded only by leaf sheaths which disintegrate into long fibers, or less frequently surrounded by cataphylls; culms 1.3-9.9(-13.7) cm long, the tallest 1.9-9.9(-13.7) cm long, 0.3-0.5 mm widejust below the inflorescence, trigonous, with 1elevated vein on each angle and 2-5 elevated veins on each side, smooth to minutely antrorsely scabrous on angles and veins, more prominently scabrous on angles and distally. Cataphylls at base of reproductive shoots 0-2, 1.6-10.8 mm long. Leaves of reproductive shoots 3-9. Leaf blades to 52.0 cm long, 0.7-2.2(-2.5) mm wide, the widest 1.2-2.2(-2.5) mm wide, flat to V-shaped, to occasionally M-shaped; adaxial surface dark green and smooth, papillose, or antrorsely scabrous, more textureddistally; abaxial surface smooth tooccasionally scabrous,more textured on mid-vein and distally; margins smooth to antrorsely scabrous, more scabrous distally; leafsheaths 0.7-5.1 cm long, lower portion especially on outer sheathshave some red coloration; abaxial face with green to white or proximally red veins and whitish and translucent to proximally reddish and more opaque intervein regions; adaxial face with whitishorproximallyred veinsandwhitish, thin,and translucent interveinregions,thinner and more translucent than abaxial intervein regions; vein edges with ascending, spreading, or reflexed minute, stiff, broad-based deltoid hairs; sheaths disintegrate into long fibers consisting of veins, which retain pubescence; adaxial sheath face apex concave to a depth of 0.3-0.8(-1.0) mm and sometimes slightly thickened; ligules typically wider thanlong, 0.3-1.0(-1.5) mm long (including the free portion), 0.6-1.4 mm wide,free portion of ligule 0.1-0.2 mm long, ciliate with abundant minute, stiff, broad-based deltoid hairs. Infructescences 5.2-12.9(-16.7) mm long, consisting of 3-5 approximate spikes at the summit of the culm; proximal-most internode 0.8-3.7(-5.2) mm long; bracts sheathless; proximal-most bract with blade 3.6-23.0(-38.5) mm long, 0.6-1.8 mm wide, 3.9(-4.3) mm shorter than to 10.9(-23.5) mm taller than infructescences; distal bracts reduced. Spikes arising singlyfrom nodes; terminal spikestaminate, 3.3-8.3(-9.2) mm long, 0.4-1.6C-1.8) mm wide, on peduncle (0.2-)0.3-0.7 mm long, exceeding distal-most lateral spike by 3.7 mmtoexceededbydistal-most lateralspike byl.K-1.6)mm;lateral spikes 24, pistillate, short-pedunculate, with a cladoprophyll towards base of peduncle; proximal-most spikes 3.4-7.2 mm long, (1.8-)2.2-4.4 mm wide, (3-)5-10(-12) flowered, on peduncles (0.3-)0.4-0.9(-1.4) mm long, with cladoprophyll (0.7-)1.7-2.8(-3.0) mm long. Staminate scales (2.5-)2.7-4.0 mm long, 0.7-1.8 mm wide, ovate to elliptic, apex acute to obtuse, with a green or yellowish longitudinal mid-stripe which includes the mid-vein, margins translucent, thin, whitish to occasionally yellowish-brown, often red sub-marginally forming a longitudinal stripe, more so toward apex of scales and on distal scales, mid-vein present, extending further toward the apex of the scale in more distal scales; distal scales with mid-vein raised, slightly antrorsely scabrous, and ending close to apex of scale or sometimes with mid-vein projecting as a short awn attach [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Sida 22(2): 1052 (1049-1070; figs. 1-6; tables 1-5). 2006 [23 Nov 2006] to...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Sida 22(2): 1052 (1049-1070; figs. 1-6; tables 1-5). 2006 [23 Nov 2006] to Sida 22: 1052 (2006), 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 reznicekii Werier. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1676964 on 2025-09-13
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2024-12-10 11:47:54Z
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The webpage text is licensed under a Creative Commons
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Nomenclature
original description
Werier, D. A. (2006). Carex reznicekii, a new widespread species of Carex section Acrocystis (Cyperaceae) from Eastern North America. <em>Sida, Contributions to Botany.</em> 22(2): 1049-1070.
page(s): 1052 [details] Available for editors [request]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 1052 [details] Available for editors
[request]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
From editor or global species database
Description Densely caespitose, herbaceous, evergreen perennial. Rhizomes horizontal, ascending, or erect, 0.1-3.8 mm longbetweenshootsorbranchesof the rhizomes, 0.6-1.2 mm wide with leaf sheaths absent, enclosed by leaf sheaths and/or cataphylls, which disintegrate into long fibers. Vegetative shootserect to ascending, arising from buds at the tipor side of the rhizomes, or directly from the apical meristem of rhizomes or previous year's vegetative shoots; bases consisting of cataphylls or leaf sheathes which disintegrate into long fibers;pseudoculms(represented byleaf sheaths) 1.2-7.6 cm long. Reproductive shoots erect, mostly produced directly from the apical meristem of vegetative shoots or rhizomes, or less frequently produced from buds at tip or side of rhizomes, bases mostly surrounded only by leaf sheaths which disintegrate into long fibers, or less frequently surrounded by cataphylls; culms 1.3-9.9(-13.7) cm long, the tallest 1.9-9.9(-13.7) cm long, 0.3-0.5 mm widejust below the inflorescence, trigonous, with 1elevated vein on each angle and 2-5 elevated veins on each side, smooth to minutely antrorsely scabrous on angles and veins, more prominently scabrous on angles and distally. Cataphylls at base of reproductive shoots 0-2, 1.6-10.8 mm long. Leaves of reproductive shoots 3-9. Leaf blades to 52.0 cm long, 0.7-2.2(-2.5) mm wide, the widest 1.2-2.2(-2.5) mm wide, flat to V-shaped, to occasionally M-shaped; adaxial surface dark green and smooth, papillose, or antrorsely scabrous, more textureddistally; abaxial surface smooth tooccasionally scabrous,more textured on mid-vein and distally; margins smooth to antrorsely scabrous, more scabrous distally; leafsheaths 0.7-5.1 cm long, lower portion especially on outer sheathshave some red coloration; abaxial face with green to white or proximally red veins and whitish and translucent to proximally reddish and more opaque intervein regions; adaxial face with whitishorproximallyred veinsandwhitish, thin,and translucent interveinregions,thinner and more translucent than abaxial intervein regions; vein edges with ascending, spreading, or reflexed minute, stiff, broad-based deltoid hairs; sheaths disintegrate into long fibers consisting of veins, which retain pubescence; adaxial sheath face apex concave to a depth of 0.3-0.8(-1.0) mm and sometimes slightly thickened; ligules typically wider thanlong, 0.3-1.0(-1.5) mm long (including the free portion), 0.6-1.4 mm wide,free portion of ligule 0.1-0.2 mm long, ciliate with abundant minute, stiff, broad-based deltoid hairs. Infructescences 5.2-12.9(-16.7) mm long, consisting of 3-5 approximate spikes at the summit of the culm; proximal-most internode 0.8-3.7(-5.2) mm long; bracts sheathless; proximal-most bract with blade 3.6-23.0(-38.5) mm long, 0.6-1.8 mm wide, 3.9(-4.3) mm shorter than to 10.9(-23.5) mm taller than infructescences; distal bracts reduced. Spikes arising singlyfrom nodes; terminal spikestaminate, 3.3-8.3(-9.2) mm long, 0.4-1.6C-1.8) mm wide, on peduncle (0.2-)0.3-0.7 mm long, exceeding distal-most lateral spike by 3.7 mmtoexceededbydistal-most lateralspike byl.K-1.6)mm;lateral spikes 24, pistillate, short-pedunculate, with a cladoprophyll towards base of peduncle; proximal-most spikes 3.4-7.2 mm long, (1.8-)2.2-4.4 mm wide, (3-)5-10(-12) flowered, on peduncles (0.3-)0.4-0.9(-1.4) mm long, with cladoprophyll (0.7-)1.7-2.8(-3.0) mm long. Staminate scales (2.5-)2.7-4.0 mm long, 0.7-1.8 mm wide, ovate to elliptic, apex acute to obtuse, with a green or yellowish longitudinal mid-stripe which includes the mid-vein, margins translucent, thin, whitish to occasionally yellowish-brown, often red sub-marginally forming a longitudinal stripe, more so toward apex of scales and on distal scales, mid-vein present, extending further toward the apex of the scale in more distal scales; distal scales with mid-vein raised, slightly antrorsely scabrous, and ending close to apex of scale or sometimes with mid-vein projecting as a short awn attach [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Sida 22(2): 1052 (1049-1070; figs. 1-6; tables 1-5). 2006 [23 Nov 2006] to Sida 22: 1052 (2006), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (8 publications)
To European Nucleotide Archive, ENA (Carex reznicekii)
To GenBank (3 nucleotides; 1 proteins)
To International Plant Names Index (IPNI)
To Plants of the World Online
To US Herbarium (Carex reznicekii US3501903 type 1)
To European Nucleotide Archive, ENA (Carex reznicekii)
To GenBank (3 nucleotides; 1 proteins)
To International Plant Names Index (IPNI)
To Plants of the World Online
To US Herbarium (Carex reznicekii US3501903 type 1)
From editor or global species database
Hosted externally
