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Cyperaceae taxon details

Carex harfordii Mack.

1677870  (urn:lsid:marinespecies.org:taxname:1677870)

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): 615 [details] 
Holotype  NY 00011137, geounit California  
Holotype NY 00011137, geounit California [details]
Description Plants densely cespitose. Culms sometimes lax, (29–)50–135 cm. Leaves: sheaths adaxially usually brown or gold tinged...  
Description Plants densely cespitose. Culms sometimes lax, (29–)50–135 cm. Leaves: sheaths adaxially usually brown or gold tinged near summits, summits U-shaped, prolonged to 4 mm beyond collar; distal ligules 2–7.5 mm; blades 2–4 per fertile culm, 15–35 cm × (1.8–)2–5(–9.9) mm. Inflorescences dense, headlike, brown to gold, 1.1–4 cm × 7–20 mm; proximal internode 1.5–2.5 mm; 2d internode 1–2.5 mm, these 2 internodes collectively less than 1/3 as long as inflorescences; proximal bracts usually bristlelike, occasionally leaflike, much longer than inflorescences. Spikes (4–)6–17, densely aggregated, usually individually indistinct, broadly ovoid to ovoid, 4.7–9(–12) × 3.7–7.6 mm, appearing coarse-textured, base rounded to acute, apex truncate to acute. Pistillate scales pale green or straw colored to brown or reddish, often with green to straw colored midstripe, ovate to broadly ovate, 2.2–4.7 mm, shorter to slightly longer than perigynia, less than or equal in width, margin white, 0–0.2 mm wide, apex obtuse to awned. Perigynia ascending, green or straw colored to light or coppery brown, conspicuously 4–9-veined abaxially, conspicuous 0–4(–9)-veined adaxially, veins thin, reaching top of achene, ovate to broadly ovate, plano-convex or biconvex, (2.6–)3.3–4(–4.6) × (1.2–)1.4–1.6(–2) mm, 0.6–0.7 mm thick, 2.1–2.7 times as long as wide, margin flat, including wing 0.1–0.3(–0.4) mm wide, ciliate-serrulate on distal body, often with metallic sheen; beak brown or gold at tip, cylindric, unwinged, abaxial suture inconspicuous, distance from beak tip to achene 1.2–1.8 mm, ± entire for (0–)0.3–0.7 mm. Achenes usually ovate to broadly ovate, (1.3–)1.5–1.9 × (0.9–)1–1.2(–1.4) mm, 0.5–0.7 mm thick. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bull. Torrey Bot. Club 43: 615 1916 publ. 1917 to Bull. Torrey Bot....  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bull. Torrey Bot. Club 43: 615 1916 publ. 1917 to Bull. Torrey Bot. Club 43: 615 (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 harfordii Mack.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1677870 on 2025-09-14
Date
action
by
2023-09-06 07:28:28Z
created
2024-12-10 11:47:54Z
unchecked
db_admin
2025-03-11 11:19:03Z
changed

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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): 615 [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 NY 00011137, geounit California [details]
From editor or global species database
Description Plants densely cespitose. Culms sometimes lax, (29–)50–135 cm. Leaves: sheaths adaxially usually brown or gold tinged near summits, summits U-shaped, prolonged to 4 mm beyond collar; distal ligules 2–7.5 mm; blades 2–4 per fertile culm, 15–35 cm × (1.8–)2–5(–9.9) mm. Inflorescences dense, headlike, brown to gold, 1.1–4 cm × 7–20 mm; proximal internode 1.5–2.5 mm; 2d internode 1–2.5 mm, these 2 internodes collectively less than 1/3 as long as inflorescences; proximal bracts usually bristlelike, occasionally leaflike, much longer than inflorescences. Spikes (4–)6–17, densely aggregated, usually individually indistinct, broadly ovoid to ovoid, 4.7–9(–12) × 3.7–7.6 mm, appearing coarse-textured, base rounded to acute, apex truncate to acute. Pistillate scales pale green or straw colored to brown or reddish, often with green to straw colored midstripe, ovate to broadly ovate, 2.2–4.7 mm, shorter to slightly longer than perigynia, less than or equal in width, margin white, 0–0.2 mm wide, apex obtuse to awned. Perigynia ascending, green or straw colored to light or coppery brown, conspicuously 4–9-veined abaxially, conspicuous 0–4(–9)-veined adaxially, veins thin, reaching top of achene, ovate to broadly ovate, plano-convex or biconvex, (2.6–)3.3–4(–4.6) × (1.2–)1.4–1.6(–2) mm, 0.6–0.7 mm thick, 2.1–2.7 times as long as wide, margin flat, including wing 0.1–0.3(–0.4) mm wide, ciliate-serrulate on distal body, often with metallic sheen; beak brown or gold at tip, cylindric, unwinged, abaxial suture inconspicuous, distance from beak tip to achene 1.2–1.8 mm, ± entire for (0–)0.3–0.7 mm. Achenes usually ovate to broadly ovate, (1.3–)1.5–1.9 × (0.9–)1–1.2(–1.4) mm, 0.5–0.7 mm thick. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bull. Torrey Bot. Club 43: 615 1916 publ. 1917 to Bull. Torrey Bot. Club 43: 615 (1916 publ. 1917), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]