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Cyperaceae taxon details

Carex sterilis Willd.

1676066  (urn:lsid:marinespecies.org:taxname:1676066)

accepted
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terrestrial
(1805). Sp. Pl., ed. 4 [Willdenow] 4(1), available online at https://www.biodiversitylibrary.org/page/670960#page/1/mode/1up
page(s): 208 [details] 
Description Culms 10–75 cm. Leaves 3–5 per culm; sheaths tight, inner band hyaline, 4–13 cm, apex concave, glabrous; ligules...  
Description Culms 10–75 cm. Leaves 3–5 per culm; sheaths tight, inner band hyaline, 4–13 cm, apex concave, glabrous; ligules 0.3–1.7 mm, rounded to obtuse; blades plicate, 7.5–25 cm × 1.2–2.6 mm, widest leaf 1.6–2.6 mm wide. Inflorescences densely crowded distally, often with basal spikes ± separate, 0.9–4 cm; spikes 3–8; unisexual with pistillate and staminate spikes on different plants; pistillate plants rarely with few staminate flowers; staminate plants sometimes with few pistillate flowers scattered on spikes or, occasionally, entirely pistillate spikes mixed with entirely staminate ones in same inflorescence; proximal 2 spikes 3.8–15.5 mm apart, lateral spikes 3–13.5 mm, similar to terminal spikes; terminal spikes 3.5–13.7 mm, usually unisexual, pistillate spikes 5–26-flowered, 4.5–7.2 mm wide, staminate spikes 6–31-flowered, 1.2–2.6 mm wide. Pistillate scales ovate, 1.8–2.9 × 1–1.8 mm, apex acute. Staminate scales ovate, 2.2–3.3 × 1.1–1.8 mm, base not clavate, apex acute. Anthers (1–)1.2–2.2(–2.35) mm. Perigynia spreading to reflexed, castaneous to almost black, 5–12-veined abaxially, 0–10-veined adaxially, ovate to deltate, 2.1–3.8 × 1.2–2.2 mm, 1.4–2.3(–2.7) times as long as wide; beak 0.65–1.6 mm, 0.45–0.8 length of body, setulose-serrulate, teeth whitish, 0.15–0.5 mm, soft. Achenes ovate to suborbiculate, 1–1.7 × 0.9–1.3 mm.
 [details]

Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Sp. Pl. 4: 208 1805 to Sp. Pl., ed. 4 [Willdenow] 4(1): 208. 1805 ,...  
Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Sp. Pl. 4: 208 1805 to Sp. Pl., ed. 4 [Willdenow] 4(1): 208. 1805 , information provided by Alan E. on email Oct. 12 2020 More details could be found in [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex sterilis Willd.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1676066 on 2025-09-13
Date
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by
2023-09-06 07:28:28Z
created
2024-12-10 11:47:54Z
unchecked
db_admin
2025-03-11 11:19:03Z
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Nomenclature

original description (1805). Sp. Pl., ed. 4 [Willdenow] 4(1), available online at https://www.biodiversitylibrary.org/page/670960#page/1/mode/1up
page(s): 208 [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 HAL 0103604, geounit Pennsylvania [details]
From editor or global species database
Description Culms 10–75 cm. Leaves 3–5 per culm; sheaths tight, inner band hyaline, 4–13 cm, apex concave, glabrous; ligules 0.3–1.7 mm, rounded to obtuse; blades plicate, 7.5–25 cm × 1.2–2.6 mm, widest leaf 1.6–2.6 mm wide. Inflorescences densely crowded distally, often with basal spikes ± separate, 0.9–4 cm; spikes 3–8; unisexual with pistillate and staminate spikes on different plants; pistillate plants rarely with few staminate flowers; staminate plants sometimes with few pistillate flowers scattered on spikes or, occasionally, entirely pistillate spikes mixed with entirely staminate ones in same inflorescence; proximal 2 spikes 3.8–15.5 mm apart, lateral spikes 3–13.5 mm, similar to terminal spikes; terminal spikes 3.5–13.7 mm, usually unisexual, pistillate spikes 5–26-flowered, 4.5–7.2 mm wide, staminate spikes 6–31-flowered, 1.2–2.6 mm wide. Pistillate scales ovate, 1.8–2.9 × 1–1.8 mm, apex acute. Staminate scales ovate, 2.2–3.3 × 1.1–1.8 mm, base not clavate, apex acute. Anthers (1–)1.2–2.2(–2.35) mm. Perigynia spreading to reflexed, castaneous to almost black, 5–12-veined abaxially, 0–10-veined adaxially, ovate to deltate, 2.1–3.8 × 1.2–2.2 mm, 1.4–2.3(–2.7) times as long as wide; beak 0.65–1.6 mm, 0.45–0.8 length of body, setulose-serrulate, teeth whitish, 0.15–0.5 mm, soft. Achenes ovate to suborbiculate, 1–1.7 × 0.9–1.3 mm.
 [details]

Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Sp. Pl. 4: 208 1805 to Sp. Pl., ed. 4 [Willdenow] 4(1): 208. 1805 , information provided by Alan E. on email Oct. 12 2020 More details could be found in [details]