Cyperaceae taxon details
Carex multicostata Mack.
1676322 (urn:lsid:marinespecies.org:taxname:1676322)
accepted
Species
terrestrial
Mackenzie, K. K. (1916). Notes on Carex XI. <em>Bulletin of the Torrey Botanical Club.</em> 43: 601-620., available online at https://www.biodiversitylibrary.org/page/12619421#page/622/mode/1up
page(s): 604 [details]
page(s): 604 [details]
Holotype CAS 0004265, geounit United States
Holotype CAS 0004265, geounit United States [details]
Description Plants densely cespitose. Culms 14–110 cm. Leaves: sheaths adaxially white-hyaline, summits U-shaped to rounded, often...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bull. Torrey Bot. Club 43: 604 1916 publ. 1917 to Bull. Torrey Bot....
Description Plants densely cespitose. Culms 14–110 cm. Leaves: sheaths adaxially white-hyaline, summits U-shaped to rounded, often prolonged to 3 mm beyond collar; distal ligules (1.5–)2–3.5 (–5) mm; blades 3–4(–5) per fertile culm, 8–25 cm × (2–)3–5 mm. Inflorescences dense, brown or gold, usually ± triangular, 1.6–3 cm × 12–20 mm; proximal internode 3–5.5 mm; 2d internode 1.5–5 mm; proximal bracts scalelike or bristlelike, shorter than inflorescences. Spikes 4–6(–10), densely aggregated or, sometimes, proximal 1 distant, narrowly to broadly ovoid, (8.5–)10–12 × 6–11 mm, base rounded to attenuate, apex truncate to acute. Pistillate scales gold or light red-brown, often with pale or green midstripe, ovate to lanceolate, (3.2–)3.9–4.8 mm, longer and narrower than perignyia, margin white, 0.1–0.5 mm wide, apex acuminate. Perigynia ascending to ascending-spreading, green and white, gold, or light brown, conspicuously (8–)10–17-veined abaxially, conspicuously (0–)4–12-veined adaxially, at least 3 adaxial veins longer than achene, usually ovate or broadly ovate, plano-convex, (3.8–)4.4–5.5(–6) × (1.4–)1.8–2.5 mm, 0.5–0.8 mm thick, margin flat, including wing (0.2–)0.3–0.4(–0.5) mm wide, ciliate-serrulate distally; beak gold to dark brown at tip, flat, ± ciliate-serrulate, abaxial suture inconspicuous or with conspicuous white margin, distance from beak tip to achene 2–2.8(–3.3) mm. Achenes elliptic to broadly ovate, 1.7–2.4 × 1.1–1.7 mm, 0.4–0.6 mm thick. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bull. Torrey Bot. Club 43: 604 1916 publ. 1917 to Bull. Torrey Bot....
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bull. Torrey Bot. Club 43: 604 1916 publ. 1917 to Bull. Torrey Bot. Club 43: 604 (1916 publ. 1917), 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 multicostata Mack.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1676322 on 2025-09-13
Date
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by
2024-12-10 11:47:54Z
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Nomenclature
original description
Mackenzie, K. K. (1916). Notes on Carex XI. <em>Bulletin of the Torrey Botanical Club.</em> 43: 601-620., available online at https://www.biodiversitylibrary.org/page/12619421#page/622/mode/1up
page(s): 604 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 604 [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
Holotype CAS 0004265, geounit United States [details]
From editor or global species database
Description Plants densely cespitose. Culms 14–110 cm. Leaves: sheaths adaxially white-hyaline, summits U-shaped to rounded, often prolonged to 3 mm beyond collar; distal ligules (1.5–)2–3.5 (–5) mm; blades 3–4(–5) per fertile culm, 8–25 cm × (2–)3–5 mm. Inflorescences dense, brown or gold, usually ± triangular, 1.6–3 cm × 12–20 mm; proximal internode 3–5.5 mm; 2d internode 1.5–5 mm; proximal bracts scalelike or bristlelike, shorter than inflorescences. Spikes 4–6(–10), densely aggregated or, sometimes, proximal 1 distant, narrowly to broadly ovoid, (8.5–)10–12 × 6–11 mm, base rounded to attenuate, apex truncate to acute. Pistillate scales gold or light red-brown, often with pale or green midstripe, ovate to lanceolate, (3.2–)3.9–4.8 mm, longer and narrower than perignyia, margin white, 0.1–0.5 mm wide, apex acuminate. Perigynia ascending to ascending-spreading, green and white, gold, or light brown, conspicuously (8–)10–17-veined abaxially, conspicuously (0–)4–12-veined adaxially, at least 3 adaxial veins longer than achene, usually ovate or broadly ovate, plano-convex, (3.8–)4.4–5.5(–6) × (1.4–)1.8–2.5 mm, 0.5–0.8 mm thick, margin flat, including wing (0.2–)0.3–0.4(–0.5) mm wide, ciliate-serrulate distally; beak gold to dark brown at tip, flat, ± ciliate-serrulate, abaxial suture inconspicuous or with conspicuous white margin, distance from beak tip to achene 2–2.8(–3.3) mm. Achenes elliptic to broadly ovate, 1.7–2.4 × 1.1–1.7 mm, 0.4–0.6 mm thick. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bull. Torrey Bot. Club 43: 604 1916 publ. 1917 to Bull. Torrey Bot. Club 43: 604 (1916 publ. 1917), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
