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Cyperaceae taxon details

Carex alba Scop.

1677157  (urn:lsid:marinespecies.org:taxname:1677157)

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terrestrial
Scopoli, I. (1762). Flora Carniolica : exhibens plantas Carnioliae indigenas et distributas in classes, genera, species, varietates, ordine Linnaeano. 2., available online at https://www.biodiversitylibrary.org/page/59204027#page/7/mode/1up
page(s): 216 [details] 
Description Laxamente cespitosa, con rizomas de entrenudos largos y muy delgados. Tallos 15-30 cm, obtusamente trígonos, lisos. Hojas...  
Description Laxamente cespitosa, con rizomas de entrenudos largos y muy delgados. Tallos 15-30 cm, obtusamente trígonos, lisos. Hojas (0,20)0,5-1(1,8) mm de anchura, de mayor longitud que los tallos, un poco ásperas en los bordes, enrolladas a planas, ± blandas; lígula menor de 1 mm, de ápice redondeado; sin antelígula; vainas basales con limbo desarrollado, las más inferiores escuamiformes, ± enteras. Bráctea inferior folíacea, de menor longitud que la inflorescencia, con una larga vaina hialina. Espiga masculina solitaria, de 8-15(20) mm, linear; espigas femeninas (1)2-3, de 6-8 mm, erectas, ovoides, laxifloras, separadas, pedunculadas, a veces largamente colgantes o que pueden superar a la masculina. Glumas masculinas ovales, de ápice redondeado, irregularmente roto, blanco-hialinas; glumas femeninas anchamente ovales, de ápice redondeado, blanco-hialinas, menores o algo mayores que los utrículos. Estigmas 3. Utrículos 3-3,5 × 1,2-1,8 mm, suberectos, patentes o erecto-patentes, trígonos, con los nervios prominentes, glabros, verdosos o parduscos, no muy cortamente estipitados, bruscamente estrechados en un pico de 0,5-0,8 mm, recto, de ápice truncado y escarioso, liso. Aquenios 1,8-2,1 × 1,1-1,3 mm, de contorno ± elíptico, trígonos, de color pardo. 2n = 54*. [details]

Description Rhizome stoloniferous. Culms tufted, 15-30 cm tall, rather slender, obtusely trigonous, smooth; sheaths leafless at base....  
Description Rhizome stoloniferous. Culms tufted, 15-30 cm tall, rather slender, obtusely trigonous, smooth; sheaths leafless at base. Leaves rather shorter than culm, blades flat, ca. 1 mm wide, eventually involute on margins, soft, brown sheathed at base. Involucral bracts brown-green, sheathlike, ca. 1 cm, hyaline on margins, without involucral bract leaf. Spikes usually 3, rarely 2 or 4, slightly approximate; terminal spike male, usually not surpassing adjacent female spike, linear, 1-1.5 cm; lateral spikes usually 2, rarely 1 or 3, female, oblong or subovate, 5-10 mm, loosely 2-6-flowered, peduncles slender. Female glumes stramineous or yellow-brownish, broadly ovate, ca. 3 mm, membranous, not hyaline margined, green 1-veined, apex acute. Utricles yellow-green, brownish yellow at maturity, obliquely patent, slightly longer than glume, broadly obovate or elliptic-obovate, obtusely trigonous, 3.5-4 mm, leathery, glabrous, shiny, several slightly concave veined, base obtusely rounded, margins hyaline, apex contracted into a short beak, orifice obliquely truncate. Nutlets dark brown, tightly enveloped in utricle, obovate-elliptic, trigonous, ca. 2.5 mm, brownish yellow and slightly convex on angles, tuberculate on surface; style base thickened and globose; stigmas 3.  [details]

Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Fl. Carniol. ed. 2, 2: 216 1772 to Fl. Carniol., ed. 2. 2: 216. 1772...  
Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Fl. Carniol. ed. 2, 2: 216 1772 to Fl. Carniol., ed. 2. 2: 216. 1772 , information provided by Alan E. on email Oct. 12 2020 More details could be found in [details]
Cyperaceae Working Group. (2026). [see How to cite]. Global Cyperaceae Database. Carex alba Scop.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1677157 on 2026-05-18
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
2026-04-07 13:04:12Z
changed

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Nomenclature

original description Scopoli, I. (1762). Flora Carniolica : exhibens plantas Carnioliae indigenas et distributas in classes, genera, species, varietates, ordine Linnaeano. 2., available online at https://www.biodiversitylibrary.org/page/59204027#page/7/mode/1up
page(s): 216 [details] 

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

Taxonomy

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] 

Other

additional source Li, B. Z.; Zhang, S. R. (2024). An updated species checklist and taxonomic synopsis of Cyperaceae in China. <em>Biodiversity Science.</em> 32(7): 24106., available online at https://doi.org/10.17520/biods.2024106 [details] Available for editors  PDF available [request]

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Isotype (of Carex ajanensis Vorosch.) LE 01006666, geounit Khabarovsk [details]
From editor or global species database
Description Laxamente cespitosa, con rizomas de entrenudos largos y muy delgados. Tallos 15-30 cm, obtusamente trígonos, lisos. Hojas (0,20)0,5-1(1,8) mm de anchura, de mayor longitud que los tallos, un poco ásperas en los bordes, enrolladas a planas, ± blandas; lígula menor de 1 mm, de ápice redondeado; sin antelígula; vainas basales con limbo desarrollado, las más inferiores escuamiformes, ± enteras. Bráctea inferior folíacea, de menor longitud que la inflorescencia, con una larga vaina hialina. Espiga masculina solitaria, de 8-15(20) mm, linear; espigas femeninas (1)2-3, de 6-8 mm, erectas, ovoides, laxifloras, separadas, pedunculadas, a veces largamente colgantes o que pueden superar a la masculina. Glumas masculinas ovales, de ápice redondeado, irregularmente roto, blanco-hialinas; glumas femeninas anchamente ovales, de ápice redondeado, blanco-hialinas, menores o algo mayores que los utrículos. Estigmas 3. Utrículos 3-3,5 × 1,2-1,8 mm, suberectos, patentes o erecto-patentes, trígonos, con los nervios prominentes, glabros, verdosos o parduscos, no muy cortamente estipitados, bruscamente estrechados en un pico de 0,5-0,8 mm, recto, de ápice truncado y escarioso, liso. Aquenios 1,8-2,1 × 1,1-1,3 mm, de contorno ± elíptico, trígonos, de color pardo. 2n = 54*. [details]

Description Rhizome stoloniferous. Culms tufted, 15-30 cm tall, rather slender, obtusely trigonous, smooth; sheaths leafless at base. Leaves rather shorter than culm, blades flat, ca. 1 mm wide, eventually involute on margins, soft, brown sheathed at base. Involucral bracts brown-green, sheathlike, ca. 1 cm, hyaline on margins, without involucral bract leaf. Spikes usually 3, rarely 2 or 4, slightly approximate; terminal spike male, usually not surpassing adjacent female spike, linear, 1-1.5 cm; lateral spikes usually 2, rarely 1 or 3, female, oblong or subovate, 5-10 mm, loosely 2-6-flowered, peduncles slender. Female glumes stramineous or yellow-brownish, broadly ovate, ca. 3 mm, membranous, not hyaline margined, green 1-veined, apex acute. Utricles yellow-green, brownish yellow at maturity, obliquely patent, slightly longer than glume, broadly obovate or elliptic-obovate, obtusely trigonous, 3.5-4 mm, leathery, glabrous, shiny, several slightly concave veined, base obtusely rounded, margins hyaline, apex contracted into a short beak, orifice obliquely truncate. Nutlets dark brown, tightly enveloped in utricle, obovate-elliptic, trigonous, ca. 2.5 mm, brownish yellow and slightly convex on angles, tuberculate on surface; style base thickened and globose; stigmas 3.  [details]

Taxonomic remark Source in seed data: wcs Updated namepublishedIn from Fl. Carniol. ed. 2, 2: 216 1772 to Fl. Carniol., ed. 2. 2: 216. 1772 , information provided by Alan E. on email Oct. 12 2020 More details could be found in [details]

Translation Loosely cespitose, with rhizomes having long, very slender internodes. Stems 15–30 cm, obtusely trigonous, smooth. Leaves (0.20)0.5–1(1.8) mm wide, longer than the stems, slightly rough on the margins, rolled to flat, ± soft; ligule less than 1 mm, with a rounded apex; without an anteligule; basal sheaths with the blade developed, the lowest scale-like, ± entire. Lower bract leaf-like, shorter than the inflorescence, with a long hyaline sheath. Male spike solitary, 8–15(20) mm, linear; female spikes (1)2–3, 6–8 mm, erect, ovoid, lax-flowered, separated, pedunculate, sometimes long-pendulous or overtopping the male spike. Male glumes oval, with a rounded apex, irregularly torn, white-hyaline; female glumes broadly oval, with a rounded apex, white-hyaline, smaller than or slightly larger than the utricles. Stigmas 3. Utricles 3–3.5 × 1.2–1.8 mm, suberect, spreading or erect-spreading, trigonous, with prominent nerves, glabrous, greenish or brownish, not very shortly stipitate, abruptly narrowed into a straight beak 0.5–0.8 mm long, with a truncate, scarious, smooth apex. Achenes 1.8–2.1 × 1.1–1.3 mm, ± elliptic in outline, trigonous, brown. 2n = 54*. [details]
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