Cyperaceae - Carex divisa Huds.

Description Rhizomes thick, woody, persistent, sometimes far-creeping and branched; shoots ± densely clustered, arising from short lateral branches; roots black- or grey-brown; scales pale brown, ribbed, very soon becoming dark and fibrous. Stems 15–80 cm, rough at the top, wiry, trigonous. Leaves 15–60 cm × 1.5–3 mm, stiff, ± flat or often channelled or inrolled, tapering to a slender ± flat tip, mid green to grey-green, overwintering; hypostomous; sheaths of sterile shoots forming a false stem, lower brown, soon decaying, with inner face hyaline and apex straight or concave, brown-purple; ligule 2–3 mm, obtuse, ± tubular, with free portion 0.5 mm. Inflorescence 1–3 cm, purplish-brown; bracts leaf-like or setaceous, lowest usually much exceeding inflorescence. Spikes 3–8, contiguous, lower sometimes remote, 3–13 mm, upper male at top and female below, lower often all female. Male glumes 3.5–4.5 mm, lanceolate-elliptic, pale red-brown; apex acute. Female glumes 3.5–5 mm, ovate-lanceolate, purple-brown, with pale midrib and broadly hyaline margins; apex aristate. Utricles 3.5–4 mm, ovoid or broadly ellipsoid, plano-convex, faintly nerved, pale brown; beak 0.5–0.75 mm, parallel-sided, bifid; stigmas 2; nut suborbicular, biconvex. [details]

Description Rizoma de entrenudos muy largos, cubierto por escamas, enteras o algo fibrosas. Tallos (8)15–50(70) cm, trígonos con los...

Description Rizoma de entrenudos muy largos, cubierto por escamas, enteras o algo fibrosas. Tallos (8)15–50(70) cm, trígonos con los ángulos agudos o obtusos, lisos o algo escábridos en la parte superior. Hojas (0,4)1–3(5,3) mm de anchura, de longitud menor que los tallos, planas o canaliculadas, ásperas en los bordes en una longitud variable, algo rígidas; lígula 0,5–1 mm, con los bordes levantados, de ápice obtuso o redondeado; sin antelígula; vainas basales escuamiformes, de color pardo, enteras o poco fibrosas. Bráctea inferior de longitud de menor a mucho mayor que la inflorescencia, glumácea con ápice setáceo o folíacea. Espigas agrupadas en una espiga simple, generalmente lobulada, (0,5)1–2(3,5) cm, a veces la inferior está un poco separada del resto, andróginas, y en ocasiones la(s) inferior(es) femenina(s). Glumas ovales, aristadas o mucronadas, muy raramente agudas, de color pardo oscuro, sin margen escarioso o con él estrecho en la zona superior, las femeninas mayores o algo menores que los utrículos. Utrículos (3,2)3,5–4(4,2) × (1,2)1,7–2(2,2) mm, de contorno anchamente oval, plano-convexos, esponjosos en la base, con los nervios muy prominentes, verdosos o parduscos, bruscamente estrechados en un pico de (0,5)0,7–1,1 mm, escábrido, bífido u oblicuamente truncado. Aquenios 1,5–2(2,1) × 1–1,7 mm, de contorno obovado o elíptico, plano-convexos, con la base del estilo persistente en forma de una corta columna. 2n = 58, 60, 62. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. Angl. 348 1762 to Fl. Angl. : 348 (1762), information provided by...

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. Angl. 348 1762 to Fl. Angl. : 348 (1762), information provided by Alan E. on email Jun. 07 2021 More details could be found in The Pla [details]

Taxonomic citation

Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex divisa Huds.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1676850 on 2025-11-26

Taxonomic edit history

Date

action

2023-09-06 07:28:28Z

created

Jiménez-Mejías, Pedro

2024-12-10 11:47:54Z

unchecked

db_admin

2025-03-11 11:19:03Z

changed

Márquez-Corro, José Ignacio

Licensing

The webpage text is licensed under a Creative Commons Attribution 4.0 License

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Nomenclature

basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]

Taxonomy

taxonomy source Jermy, A.C.; Simpson, D.A.; Foley, M.J.Y.; Porter, M.S. (2007). Sedges of the British Isles. 554 pp. Botanical Society of Britain & Ireland, United Kingdom. [details] Available for editors

[request]

taxonomy source Luceño, M., Castroviejo, S., Jiménez-Mejías, P. (2008). Cyperaceae. In: Castroviejo, Luceño, M., Galán, A., Jiménez-Mejías, P., Cabezas, F., Medina, L. (eds). Flora iberica. Plantas vasculares de la Península Ibérica e Islas Baleares. Vol. XVIII. Madrid: CSIC., available online at https://bibdigital.rjb.csic.es/records/item/12958-flora-iberica-vol-18-cyperaceae-pontederiaceae?offset=, http://www.floraiberica.es/PHP/familias_lista_.php?familia=Cyperaceae [details]

Present

Inaccurate

Introduced: alien

Containing type locality

From editor or global species database

Translation Rhizome with very long internodes, covered by scales, entire or somewhat fibrous. Stems (8)15–50(70) cm, trigonous with acute or obtuse angles, smooth or slightly scabrid in the upper part. Leaves (0.4)1–3(5.3) mm wide, shorter than the stems, flat or channelled, rough along the margins for a variable length, somewhat rigid; ligule 0.5–1 mm, with raised margins, apex obtuse or rounded; no antiligule; basal sheaths scale-like, brown, entire or weakly fibrous. Lowest bract shorter than to much longer than the inflorescence, glumaceous with a setaceous apex or foliar. Spikes grouped into a single spike, generally lobed, (0.5)1–2(3.5) cm, sometimes the lowest slightly separated from the rest, androgynous, and occasionally the lowermost one(s) female. Glumes oval, aristate or mucronate, very rarely acute, dark brown, without a scarious margin or with it narrow in the upper part, the female ones larger or slightly smaller than the utricles. Utricles (3.2)3.5–4(4.2) × (1.2)1.7–2(2.2) mm, broadly oval in outline, plano-convex, spongy at the base, with very prominent nerves, greenish or brownish, abruptly narrowed into a beak (0.5)0.7–1.1 mm long, scabrid, bifid or obliquely truncate. Achenes 1.5–2(2.1) × 1–1.7 mm, obovoid or elliptic in outline, plano-convex, with the style base persistent as a short column. 2n = 58, 60, 62. [details]

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