Cyperaceae taxon details
Carex laxiculmis Schwein.
1677484 (urn:lsid:marinespecies.org:taxname:1677484)
accepted
Species
- Variety Carex laxiculmis var. copulata (L.H.Bailey) Fernald
- Variety Carex laxiculmis var. laxiculmis Schwein.
- Forma Carex laxiculmis f. serotina Howe accepted as Carex laxiculmis var. laxiculmis Schwein.
- Variety Carex laxiculmis var. floridana L.H.Bailey accepted as Carex digitalis var. floridana (L.H.Bailey) Naczi & Bryson
terrestrial
Schweinitz, L. D. (1824). An Analytical Table to facilitate the determination of the hitherto observed North American species of the genus Carex. <em>Annals of the Lyceum of Natural History of New York.</em> 1: 62-71., available online at https://www.biodiversitylibrary.org/page/15913239#page/72/mode/1up
page(s): 70 [details]
page(s): 70 [details]
Description Plants densely cespitose. Culms erect, ascending, or spreading, 9–48 cm × 0.6–1 mm. Leaves: basal sheaths white or...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 1: 70 1824 to Ann. Lyceum Nat. Hist....
Description Plants densely cespitose. Culms erect, ascending, or spreading, 9–48 cm × 0.6–1 mm. Leaves: basal sheaths white or very light brown; nonbasal sheaths 7–32 mm, sheath blades 0.9–11.9 cm × 1–7 mm; leaf blades erect, ascending, or spreading, green or glaucous, 8–36 cm × 3–12 mm; blades of vegetative shoots 0–3.5 times wider than bract blades. Inflorescences: spikes (3–)4(–5) per culm, scattered; peduncles of pistillate spikes exserted 0–9 cm; of staminate spikes exserted 0–9.5 cm; bracts 2–11.8 cm × 1.3–4.8 mm. Pistillate spikes: the proximal basal, scattered, drooping. Staminate spike 1, linear, 8–22 × 1.2–3 mm. Pistillate scales keeled, 2.5–3.2 × 1–1.5 mm, midribs green, margins hyaline or, occasionally, reddish brown outward, apex cuspidate to acute, awn to 1 mm, proximal scale of lateral spike sterile or subtending a staminate flower. Staminate scales obovate, 3.5–4.5 × 1–1.2 mm, midribs green, margins hyaline or reddish brown outward, apex acute. Anthers 2–3 mm. Perigynia 4–9 per spike, finely veined, elliptic-ovoid, 2.5–4 × 1.5–2 mm; beak slightly bent, tapering. Achenes obvoid to broadly ovoid, 2.2–3.2 × 1.2–1.8 mm, slightly concave at maturity, tightly fitting in perigynia. Style slender ascending through entire orifice. 2n = 44, 46. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 1: 70 1824 to Ann. Lyceum Nat. Hist....
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 1: 70 1824 to Ann. Lyceum Nat. Hist. New York 1: 70 (1824), 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 laxiculmis Schwein.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1677484 on 2025-09-11
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2024-12-10 11:47:54Z
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Nomenclature
original description
Schweinitz, L. D. (1824). An Analytical Table to facilitate the determination of the hitherto observed North American species of the genus Carex. <em>Annals of the Lyceum of Natural History of New York.</em> 1: 62-71., available online at https://www.biodiversitylibrary.org/page/15913239#page/72/mode/1up
page(s): 70 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 70 [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 PH 00001104, geounit North Carolina [details]
From editor or global species database
Description Plants densely cespitose. Culms erect, ascending, or spreading, 9–48 cm × 0.6–1 mm. Leaves: basal sheaths white or very light brown; nonbasal sheaths 7–32 mm, sheath blades 0.9–11.9 cm × 1–7 mm; leaf blades erect, ascending, or spreading, green or glaucous, 8–36 cm × 3–12 mm; blades of vegetative shoots 0–3.5 times wider than bract blades. Inflorescences: spikes (3–)4(–5) per culm, scattered; peduncles of pistillate spikes exserted 0–9 cm; of staminate spikes exserted 0–9.5 cm; bracts 2–11.8 cm × 1.3–4.8 mm. Pistillate spikes: the proximal basal, scattered, drooping. Staminate spike 1, linear, 8–22 × 1.2–3 mm. Pistillate scales keeled, 2.5–3.2 × 1–1.5 mm, midribs green, margins hyaline or, occasionally, reddish brown outward, apex cuspidate to acute, awn to 1 mm, proximal scale of lateral spike sterile or subtending a staminate flower. Staminate scales obovate, 3.5–4.5 × 1–1.2 mm, midribs green, margins hyaline or reddish brown outward, apex acute. Anthers 2–3 mm. Perigynia 4–9 per spike, finely veined, elliptic-ovoid, 2.5–4 × 1.5–2 mm; beak slightly bent, tapering. Achenes obvoid to broadly ovoid, 2.2–3.2 × 1.2–1.8 mm, slightly concave at maturity, tightly fitting in perigynia. Style slender ascending through entire orifice. 2n = 44, 46. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York 1: 70 1824 to Ann. Lyceum Nat. Hist. New York 1: 70 (1824), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
