Cyperaceae taxon details
Carex constanceana Stacey
1676710 (urn:lsid:marinespecies.org:taxname:1676710)
accepted
Species
terrestrial
Stacey, J. W. (1938). Notes on Carex XIV. <em>Leaflets of western botany.</em> 2: 121-124., available online at https://www.biodiversitylibrary.org/page/13171188#page/147/mode/1up
page(s): 123 [details]
page(s): 123 [details]
Holotype CAS 0003529, geounit United States
Holotype CAS 0003529, geounit United States [details]
Description Plants densely cespitose. Culms 25–35 cm. Leaves: sheaths adaxially white-hyaline, summits U-shaped or rounded, sometimes...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Leafl. W. Bot. 2: 123 1938 to Leafl. W. Bot. 2: 123 (1938),...
Description Plants densely cespitose. Culms 25–35 cm. Leaves: sheaths adaxially white-hyaline, summits U-shaped or rounded, sometimes prolonged beyond collar and rounded; distal ligules 1–3 mm; blades (2–)3–5 per fertile culm, 4–15 cm × 2–3 mm. Inflorescences open, orange-brown or greenish, 2.5–4 cm × 13–15 mm; proximal internode 6–12 mm; 2d internode 2–6 mm; proximal bracts scalelike or bristlelike, shorter than inflorescences. Spikes 3–7, distant, distinct, oblanceloid to obovoid, 14–21 × 7–10 mm, base attenuate, apex acute to rounded. Pistillate scales orange- or red-brown to coppery, with white or green midstripe, lanceolate to ovate, 4.8–5.5 mm, 2/3–3/4 length of and narrower than perigynia, margin white-hyaline, 0–0.2(–0.4) mm wide, apex obtuse. Staminate scales with white-hyaline margin 0–0.2(–0.4) mm wide. Perigynia appressed to appressed-ascending, greenish to straw colored, conspicuously 8–16-veined abaxially, conspicuously, shortly 4–7-veined adaxially, at least 3 adaxial veins longer than achene, lanceolate to ovate, plano-convex, 6.8–7.5 × 2–2.4 mm, (0.5–)0.6–0.8 mm thick, margin flat, including wing 0.4–0.5 mm wide, ciliate-serrulate at least distally; beak red-brown, sometimes white-hyaline at tip, cylindric, unwinged, entire for 0.5–0.9 mm, abaxial suture usually inconspicuous, distance from beak tip to achene 3.5–4.2 mm. Achenes ovate or obovate, 2.1–2.5 × 1.2–1.5 mm, 0.5–0.6 mm thick.
[details]
[details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Leafl. W. Bot. 2: 123 1938 to Leafl. W. Bot. 2: 123 (1938),...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Leafl. W. Bot. 2: 123 1938 to Leafl. W. Bot. 2: 123 (1938), 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 constanceana Stacey. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1676710 on 2025-09-13
Date
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2024-12-10 11:47:54Z
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db_admin
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Nomenclature
original description
Stacey, J. W. (1938). Notes on Carex XIV. <em>Leaflets of western botany.</em> 2: 121-124., available online at https://www.biodiversitylibrary.org/page/13171188#page/147/mode/1up
page(s): 123 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 123 [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 0003529, geounit United States [details]
From editor or global species database
Description Plants densely cespitose. Culms 25–35 cm. Leaves: sheaths adaxially white-hyaline, summits U-shaped or rounded, sometimes prolonged beyond collar and rounded; distal ligules 1–3 mm; blades (2–)3–5 per fertile culm, 4–15 cm × 2–3 mm. Inflorescences open, orange-brown or greenish, 2.5–4 cm × 13–15 mm; proximal internode 6–12 mm; 2d internode 2–6 mm; proximal bracts scalelike or bristlelike, shorter than inflorescences. Spikes 3–7, distant, distinct, oblanceloid to obovoid, 14–21 × 7–10 mm, base attenuate, apex acute to rounded. Pistillate scales orange- or red-brown to coppery, with white or green midstripe, lanceolate to ovate, 4.8–5.5 mm, 2/3–3/4 length of and narrower than perigynia, margin white-hyaline, 0–0.2(–0.4) mm wide, apex obtuse. Staminate scales with white-hyaline margin 0–0.2(–0.4) mm wide. Perigynia appressed to appressed-ascending, greenish to straw colored, conspicuously 8–16-veined abaxially, conspicuously, shortly 4–7-veined adaxially, at least 3 adaxial veins longer than achene, lanceolate to ovate, plano-convex, 6.8–7.5 × 2–2.4 mm, (0.5–)0.6–0.8 mm thick, margin flat, including wing 0.4–0.5 mm wide, ciliate-serrulate at least distally; beak red-brown, sometimes white-hyaline at tip, cylindric, unwinged, entire for 0.5–0.9 mm, abaxial suture usually inconspicuous, distance from beak tip to achene 3.5–4.2 mm. Achenes ovate or obovate, 2.1–2.5 × 1.2–1.5 mm, 0.5–0.6 mm thick.[details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Leafl. W. Bot. 2: 123 1938 to Leafl. W. Bot. 2: 123 (1938), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
