Cyperaceae taxon details
Carex unilateralis Mack.
1677330 (urn:lsid:marinespecies.org:taxname:1677330)
accepted
Species
terrestrial
Mackenzie, K. K. (1922). A monograph of the California species of the genus Carex. <em>Erythea.</em> 8: 7-95., available online at https://archive.org/details/erytheajournalof08jeps/page/95/mode/1up
page(s): 43 [details]
page(s): 43 [details]
Description Plants densely cespitose. Culms 35–75 cm. Leaves: sheath summits U-shaped, sometimes prolonged to 2 mm beyond collar;...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Erythea 8: 43 1922 to Erythea 8: 43 (1922), information provided by...
Description Plants densely cespitose. Culms 35–75 cm. Leaves: sheath summits U-shaped, sometimes prolonged to 2 mm beyond collar; distal ligules 2.5–8 mm; blades 3–5 per fertile culm; 15–45 cm × 2–3(–4) mm. Inflorescences ascending, dense, green to gold or brown, (1–)1.4–2.5 cm × 9–17 mm; proximal internode 1.5–4 mm; 2d internode 1–4 mm; proximal 2–3 bracts erect to ascending, leaflike, the proximal longer than inflorescence, often more than 2 mm wide, base ± surrounding culm. Spikes 5–11, ± individually indistinct, ovoid to broadly ovoid, 7–13 × 5–9 mm, base rounded to acute, apex truncate to acute. Pistillate scales pale gold to red-brown, with pale to green midstripe, lanceolate to ovate, 3.3–4.8 mm, shorter and narrower than perigynia, margin sometimes white, 0.1–0.2 mm wide, apex acuminate to awned. Perigynia ascending to ascending-spreading, green, gold, or sometimes coppery, conspicuously 0–11-veined abaxially, conspicuously 0–8-veined adaxially, ovate to lanceolate, usually flat, 3.5–5 × 1.3–1.75 mm, 0.3–0.5 mm thick, margin flat, including wing 0.2–0.3 mm wide; beak usually gold or red-brown at tip, usually flat, winged, ± ciliate-serrulate or, sometimes, cylindric, unwinged, ± entire for 0.5–0.6 mm, (1.4–)1.7–2.5 mm, abaxial suture inconspicuous or with white margin, distance from beak tip to achene. Achenes stipitate, ovate to obovate, (1.2–)1.5–1.9 × 0.75–1(–1.2) mm, 0.3–0.4 mm thick. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Erythea 8: 43 1922 to Erythea 8: 43 (1922), information provided by...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Erythea 8: 43 1922 to Erythea 8: 43 (1922), information provided by Alan E. on email Jun. 07 2021 More details could be found in The Plant [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex unilateralis Mack.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1677330 on 2025-09-15
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2024-12-10 11:47:54Z
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Nomenclature
original description
Mackenzie, K. K. (1922). A monograph of the California species of the genus Carex. <em>Erythea.</em> 8: 7-95., available online at https://archive.org/details/erytheajournalof08jeps/page/95/mode/1up
page(s): 43 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 43 [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 NY 00011390, geounit California [details]
From editor or global species database
Description Plants densely cespitose. Culms 35–75 cm. Leaves: sheath summits U-shaped, sometimes prolonged to 2 mm beyond collar; distal ligules 2.5–8 mm; blades 3–5 per fertile culm; 15–45 cm × 2–3(–4) mm. Inflorescences ascending, dense, green to gold or brown, (1–)1.4–2.5 cm × 9–17 mm; proximal internode 1.5–4 mm; 2d internode 1–4 mm; proximal 2–3 bracts erect to ascending, leaflike, the proximal longer than inflorescence, often more than 2 mm wide, base ± surrounding culm. Spikes 5–11, ± individually indistinct, ovoid to broadly ovoid, 7–13 × 5–9 mm, base rounded to acute, apex truncate to acute. Pistillate scales pale gold to red-brown, with pale to green midstripe, lanceolate to ovate, 3.3–4.8 mm, shorter and narrower than perigynia, margin sometimes white, 0.1–0.2 mm wide, apex acuminate to awned. Perigynia ascending to ascending-spreading, green, gold, or sometimes coppery, conspicuously 0–11-veined abaxially, conspicuously 0–8-veined adaxially, ovate to lanceolate, usually flat, 3.5–5 × 1.3–1.75 mm, 0.3–0.5 mm thick, margin flat, including wing 0.2–0.3 mm wide; beak usually gold or red-brown at tip, usually flat, winged, ± ciliate-serrulate or, sometimes, cylindric, unwinged, ± entire for 0.5–0.6 mm, (1.4–)1.7–2.5 mm, abaxial suture inconspicuous or with white margin, distance from beak tip to achene. Achenes stipitate, ovate to obovate, (1.2–)1.5–1.9 × 0.75–1(–1.2) mm, 0.3–0.4 mm thick. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Erythea 8: 43 1922 to Erythea 8: 43 (1922), information provided by Alan E. on email Jun. 07 2021 More details could be found in The Plant [details]
To Biodiversity Heritage Library (9 publications)
To European Nucleotide Archive, ENA (Carex unilateralis)
To GenBank (13 nucleotides; 3 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex athrostachya var. unilateralis (Mack.) B.Boivin)
To IUCN Red List (Least Concern)
To New York Botanical Garden Steere Herbarium (Carex_unilateralis_NY11390_type_1)
To New York Botanical Garden Steere Herbarium (Carex_unilateralis_NY11391_type_1)
To Plants of the World Online (from synonym Carex athrostachya var. unilateralis (Mack.) B.Boivin)
To Plants of the World Online
To European Nucleotide Archive, ENA (Carex unilateralis)
To GenBank (13 nucleotides; 3 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex athrostachya var. unilateralis (Mack.) B.Boivin)
To IUCN Red List (Least Concern)
To New York Botanical Garden Steere Herbarium (Carex_unilateralis_NY11390_type_1)
To New York Botanical Garden Steere Herbarium (Carex_unilateralis_NY11391_type_1)
To Plants of the World Online (from synonym Carex athrostachya var. unilateralis (Mack.) B.Boivin)
To Plants of the World Online
From editor or global species database
Hosted externally
Hosted externally
