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Cyperaceae taxon details

Carex rostrata Stokes

To LE Herbarium (Carex rostrata LE00010383 specimen originale 1)
To LE Herbarium (Carex rostrata LE00010383 specimen originale 1)

1676990  (urn:lsid:marinespecies.org:taxname:1676990)

  1. Biota
  2. Plantae (Kingdom)
  3. Viridiplantae (Subkingdom)
  4. Streptophyta (Infrakingdom)
  5. Tracheophyta (Phylum (Division))
  6. Spermatophytina (Subphylum (Subdivision))
  7. Magnoliopsida (Class)
  8. Lilianae (Superorder)
  9. Poales (Order)
  10. Cyperaceae (Family)
  11. Cariceae (Tribe)
  12. Carex (Genus)
  13. Carex subg. Carex (Subgenus)
  14. Carex sect. HirtaClade (Section)
  15. Carex rostrata (Species)
accepted
Species

Ordering

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Children Display

  1. Variety Carex rostrata var. ambigens Fernald
  2. Variety Carex rostrata var. rostrata
  3. Variety Carex rostrata var. ambigens Fernald (uncertain > unassessed)
  4. Variety Carex rostrata var. rotundata (Wahlenb.) H.Lindb. (uncertain > unassessed)
  5. Forma Carex rostrata f. elatior Lange accepted as Carex rostrata var. rostrata
  6. Forma Carex rostrata f. elatior (Blytt) Kük. accepted as Carex rostrata var. rostrata
  7. Forma Carex rostrata f. furcata Junge accepted as Carex rostrata var. rostrata
  8. Forma Carex rostrata f. laeta Norman accepted as Carex rostrata var. rostrata
  9. Forma Carex rostrata f. longipalea Neuman accepted as Carex rostrata var. rostrata
  10. Forma Carex rostrata f. minor (Boott) Kük. accepted as Carex utriculata Boott
  11. Forma Carex rostrata f. pendulina (Blytt) Kük. accepted as Carex rostrata var. rostrata
  12. Forma Carex rostrata f. plumosa Norman accepted as Carex rostrata var. rostrata
  13. Forma Carex rostrata f. rostrata Stokes accepted as Carex rostrata Stokes
  14. Forma Carex rostrata f. sommieri Christ accepted as Carex rostrata var. rostrata
  15. Forma Carex rostrata f. sparangiformis Murr accepted as Carex rostrata Stokes
  16. Forma Carex rostrata f. umbrosa Junge accepted as Carex rostrata var. rostrata
  17. Subspecies Carex rostrata subsp. hymenocarpa (Drejer) K.Richt. accepted as Carex rostrata var. rostrata
  18. Subspecies Carex rostrata subsp. rotundata (Wahlenb.) Neuman accepted as Carex rotundata Wahlenb.
  19. Subspecies Carex rostrata subsp. rotundata Kük. accepted as Carex rotundata Wahlenb.
  20. Subspecies Carex rostrata subsp. utriculata (Boott) Asch. & Graebn. accepted as Carex utriculata Boott
  21. Subspecies Carex rostrata subsp. utriculata (Boott) R.Knapp accepted as Carex utriculata Boott
  22. Variety Carex rostrata var. anticostensis (Fernald) Fernald accepted as Carex ×mainensis Porter
  23. Variety Carex rostrata var. borealis (Hartm.) Neuman accepted as Carex saamica A.T.M.Pedersen & Elven represented as Carex ×saamica A.T.M.Pedersen & Elven
  24. Variety Carex rostrata var. brunnescens (Andersson) Kük. accepted as Carex rostrata var. rostrata
  25. Variety Carex rostrata var. cliftonii Farw. accepted as Carex rostrata var. rostrata
  26. Variety Carex rostrata var. hamgyengensis Ohwi accepted as Carex rostrata var. rostrata
  27. Variety Carex rostrata var. hymenocarpa (Drejer) Christ accepted as Carex rostrata var. rostrata
  28. Variety Carex rostrata var. latifolia Asch. accepted as Carex rostrata var. rostrata
  29. Variety Carex rostrata var. longipalea Neuman accepted as Carex rostrata var. rostrata
  30. Variety Carex rostrata var. maxima (Andersson) Neuman accepted as Carex rostrata var. rostrata
  31. Variety Carex rostrata var. sparganiformis Murr accepted as Carex rostrata var. rostrata
  32. Variety Carex rostrata var. sparganiformis (Murr) Kük. accepted as Carex rostrata var. rostrata
  33. Variety Carex rostrata var. utriculata (Boott) L.H.Bailey accepted as Carex utriculata Boott
terrestrial
(1787). A Botanical Arrangement of British Plants (ed. 2) 2:, available online at https://www.biodiversitylibrary.org/page/56418898#page/7/mode/1up
page(s): 1059 [details] 
Holotype  LE 00010383  
Holotype LE 00010383 [details]
Description Laxamente cespitosa, con rizoma muy robusto de entrenudos algo largos. Tallos fértiles (18)35–90(100) cm, lisos,...  
Description Laxamente cespitosa, con rizoma muy robusto de entrenudos algo largos. Tallos fértiles (18)35–90(100) cm, lisos, raramente un poco ásperos hacia el ápice, obtusamente trígonos. Hojas (2,5)3–6(6,5) mm de anchura, de longitud mayor que los tallos, ± canaliculadas, ásperas en los bordes, rígidas; lígula 3–8 mm, de ápice agudo, obtuso o escotado; sin antelígula; vainas basales con limbo desarrollado, solo las más inferiores escuamiformes, de color pardo, enteras. Bráctea inferior folíacea, de longitud mayor que la inflorescencia, no envainante o con una vaina corta. Espigas masculinas 2–3, de (6)20–50(66) mm, excepcionalmente abrotadas a lo superior divididas en dos, de linearens a estrechamente fusiformes; espigas femeninas (2)3–5, de (12)40–55(97) mm, generalmente cilíndricas, densifloras, la superior frecuentemente andrógina, distantes o las superiores aproximadas, erectas o la inferior colgante. Glumas masculinas estrechamente oblongo-oblongas, obtusas o subagudas, pardas, con margen escarioso; glumas femeninas lanceoladas u oblongas, obtusas, agudas o excepcionalmente mucronadas, de color pardo-rojizo, las de la zona media casi siempre con margen escarioso. Utrículos (2,6)4–5,5(6) × (0,8)1,5–2 mm, patentes, de anchamente ovoides a subglobosos, inflados, pajizos o parduscos, con los nervios poco prominentes, bruscamente estrechados en un pico de 1,1–1,3 mm, profundamente bífido, con el seno ± agudo, liso. Aquenios (0,7)1,3–1,7 × 1–1,2 mm, de contorno obovado, trígonos, de color pardo. 2n = ca. 70*, 72–74*, 76*, 82*. [details]

Description Rhizomes far-creeping; shoots few in each tuft; roots thick, purple- or orange-brown; scales pale grey-brown, rarely...  
Description Rhizomes far-creeping; shoots few in each tuft; roots thick, purple- or orange-brown; scales pale grey-brown, rarely red-tinged, soon decaying. Stems 20–100 cm, subterete and smooth below, trigonous and rough above. Leaves 30–120 cm × 2–7 mm, rough, rigid, keeled or plicate, or in some habitats inrolled (as in marram grass), tapering to a long (2–6 cm) acicular point, glaucous on upper surface, dark green and shiny beneath, overwintering; mainly epistomous but occasionally with a few lines of stomata on lower surface; sheaths herbaceous, thick, spongy, dark brown, often streaked with red, the inner ones pink, with inner face hyaline, becoming brown and often fibrillose on splitting; apex straight; ligule 2–3 mm, rounded. Inflorescence up to 1/2 length of stem; bracts usually leaf-like, equalling or exceeding inflorescence. Male spikes 2–4, 2–7 cm, lower ones with setaceous bracts; male glumes 5–6 mm, elliptic-oblanceolate, brown with a paler midrib and narrow hyaline margin; apex acute or obtuse. Female spikes 2–5, contiguous or lowermost distant, 3–8 cm, cylindric, suberect, subsessile or lowest shortly stalked; female glumes 3–5.5 mm, narrower than utricle, oblong-lanceolate, purplish-brown with pale midrib; apex acute. Utricles 3.5–6.5 mm, ovoid, inflated, faintly ribbed, yellow-green, patent; beak 1–1.5 mm, smooth, bifid; stigmas 3; nut subglobose-trigonous. [details]

Description Rhizome with long and slightly stout stolons. Culms loosely tufted, 40-100 cm tall, rather stout, obtusely trigonous,...  
Description Rhizome with long and slightly stout stolons. Culms loosely tufted, 40-100 cm tall, rather stout, obtusely trigonous, smooth, bladeless sheathed at base, rudimentary sheaths usually disintegrating into fibers. Leaves longer than culm, blades gray-green, 2-5 mm wide, flat, ± stiff, with transverse septate nodes between veins, scabrid on margins. Involucral bracts leaflike, lower involucral bracts longer than spike, shortly sheathed or not sheathed, upper involucral bracts not sheathed. Spikes 3-6; terminal 2-4 spikes, rarely only 1 spike, male, approximate, linear-cylindric, 1-3.5 cm, sessile or subsessile; remaining spikes female, lower spikes remote, cylindric, 3-6 × 0.7-0.8 cm, densely many flowered, subsessile or lower spikes shortly pedunculate. Female glumes ferruginous or pale ferruginous, oblong-lanceolate, 3.5-4 mm, membranous, green costate, margins white hyaline, apex acute or obtuse. Utricles yellowish green, slightly longer than or equaling glume, obliquely patent, eventually slightly divergent, ovate or broadly ovate, inflated trigonous, ca. 4 mm, membranous, glabrous, shiny, 4-6-veined abaxially, base subrounded, shortly stipitate, apex abruptly contracted into a medium-sized beak, orifice shortly 2-toothed. Nutlets brown, very loosely enveloped, broadly obovate, trigonous, ca. 1.5 mm, base shortly stipitate; style slender, flexuose, base not thickened; stigmas 3, rather short. [details]

Distribution Japan: Hokkaido.  
Distribution Japan: Hokkaido. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Arr. Brit. Pl. ed. 2 2: 1059 1787 to Bot. Arr. Brit. Pl. ed. 2 ,...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Arr. Brit. Pl. ed. 2 2: 1059 1787 to Bot. Arr. Brit. Pl. ed. 2 , 2: 1059 (1787), 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 rostrata Stokes. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1676990 on 2026-05-14
Date
action
by
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

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


Nomenclature

original description (1787). A Botanical Arrangement of British Plants (ed. 2) 2:, available online at https://www.biodiversitylibrary.org/page/56418898#page/7/mode/1up
page(s): 1059 [details] 

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  PDF available [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] 

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 
   

Holotype LE 00010383 [details]
From editor or global species database
Additional information Chromosome number: 2n=60 [details]

Additional information Chromosome number: 2n=76 [details]

Additional information Chromosome number: 2n=82 [details]

Description Laxamente cespitosa, con rizoma muy robusto de entrenudos algo largos. Tallos fértiles (18)35–90(100) cm, lisos, raramente un poco ásperos hacia el ápice, obtusamente trígonos. Hojas (2,5)3–6(6,5) mm de anchura, de longitud mayor que los tallos, ± canaliculadas, ásperas en los bordes, rígidas; lígula 3–8 mm, de ápice agudo, obtuso o escotado; sin antelígula; vainas basales con limbo desarrollado, solo las más inferiores escuamiformes, de color pardo, enteras. Bráctea inferior folíacea, de longitud mayor que la inflorescencia, no envainante o con una vaina corta. Espigas masculinas 2–3, de (6)20–50(66) mm, excepcionalmente abrotadas a lo superior divididas en dos, de linearens a estrechamente fusiformes; espigas femeninas (2)3–5, de (12)40–55(97) mm, generalmente cilíndricas, densifloras, la superior frecuentemente andrógina, distantes o las superiores aproximadas, erectas o la inferior colgante. Glumas masculinas estrechamente oblongo-oblongas, obtusas o subagudas, pardas, con margen escarioso; glumas femeninas lanceoladas u oblongas, obtusas, agudas o excepcionalmente mucronadas, de color pardo-rojizo, las de la zona media casi siempre con margen escarioso. Utrículos (2,6)4–5,5(6) × (0,8)1,5–2 mm, patentes, de anchamente ovoides a subglobosos, inflados, pajizos o parduscos, con los nervios poco prominentes, bruscamente estrechados en un pico de 1,1–1,3 mm, profundamente bífido, con el seno ± agudo, liso. Aquenios (0,7)1,3–1,7 × 1–1,2 mm, de contorno obovado, trígonos, de color pardo. 2n = ca. 70*, 72–74*, 76*, 82*. [details]

Description Rhizomes far-creeping; shoots few in each tuft; roots thick, purple- or orange-brown; scales pale grey-brown, rarely red-tinged, soon decaying. Stems 20–100 cm, subterete and smooth below, trigonous and rough above. Leaves 30–120 cm × 2–7 mm, rough, rigid, keeled or plicate, or in some habitats inrolled (as in marram grass), tapering to a long (2–6 cm) acicular point, glaucous on upper surface, dark green and shiny beneath, overwintering; mainly epistomous but occasionally with a few lines of stomata on lower surface; sheaths herbaceous, thick, spongy, dark brown, often streaked with red, the inner ones pink, with inner face hyaline, becoming brown and often fibrillose on splitting; apex straight; ligule 2–3 mm, rounded. Inflorescence up to 1/2 length of stem; bracts usually leaf-like, equalling or exceeding inflorescence. Male spikes 2–4, 2–7 cm, lower ones with setaceous bracts; male glumes 5–6 mm, elliptic-oblanceolate, brown with a paler midrib and narrow hyaline margin; apex acute or obtuse. Female spikes 2–5, contiguous or lowermost distant, 3–8 cm, cylindric, suberect, subsessile or lowest shortly stalked; female glumes 3–5.5 mm, narrower than utricle, oblong-lanceolate, purplish-brown with pale midrib; apex acute. Utricles 3.5–6.5 mm, ovoid, inflated, faintly ribbed, yellow-green, patent; beak 1–1.5 mm, smooth, bifid; stigmas 3; nut subglobose-trigonous. [details]

Description Rhizome with long and slightly stout stolons. Culms loosely tufted, 40-100 cm tall, rather stout, obtusely trigonous, smooth, bladeless sheathed at base, rudimentary sheaths usually disintegrating into fibers. Leaves longer than culm, blades gray-green, 2-5 mm wide, flat, ± stiff, with transverse septate nodes between veins, scabrid on margins. Involucral bracts leaflike, lower involucral bracts longer than spike, shortly sheathed or not sheathed, upper involucral bracts not sheathed. Spikes 3-6; terminal 2-4 spikes, rarely only 1 spike, male, approximate, linear-cylindric, 1-3.5 cm, sessile or subsessile; remaining spikes female, lower spikes remote, cylindric, 3-6 × 0.7-0.8 cm, densely many flowered, subsessile or lower spikes shortly pedunculate. Female glumes ferruginous or pale ferruginous, oblong-lanceolate, 3.5-4 mm, membranous, green costate, margins white hyaline, apex acute or obtuse. Utricles yellowish green, slightly longer than or equaling glume, obliquely patent, eventually slightly divergent, ovate or broadly ovate, inflated trigonous, ca. 4 mm, membranous, glabrous, shiny, 4-6-veined abaxially, base subrounded, shortly stipitate, apex abruptly contracted into a medium-sized beak, orifice shortly 2-toothed. Nutlets brown, very loosely enveloped, broadly obovate, trigonous, ca. 1.5 mm, base shortly stipitate; style slender, flexuose, base not thickened; stigmas 3, rather short. [details]

Distribution Japan: Hokkaido. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Arr. Brit. Pl. ed. 2 2: 1059 1787 to Bot. Arr. Brit. Pl. ed. 2 , 2: 1059 (1787), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]

Translation Loosely tufted, with a very robust rhizome with somewhat long internodes. Fertile stems (18)35–90(100) cm tall, smooth, rarely slightly rough towards the apex, bluntly trigonous. Leaves (2.5)3–6(6.5) mm wide, longer than the stems, ± canaliculate, rough on the margins, rigid; ligule 3–8 mm long, with an acute, obtuse, or notched apex; without an anteligule; basal sheaths with a developed blade, only the lowest ones scale-like, brown, entire. Lower bract leaf-like, longer than the inflorescence, not sheathing or with a short sheath. Male spikes 2–3, (6)20–50(66) mm long, exceptionally branched above and divided into two, linear to narrowly fusiform; female spikes (2)3–5, (12)40–55(97) mm long, generally cylindrical, densely flowered, the upper frequently androgynous, distant or with the upper ones approximate, erect or the lower one pendent. Male glumes narrowly oblong-oblong, obtuse or subacute, brown, with a scarious margin; female glumes lanceolate or oblong, obtuse, acute or exceptionally mucronate, reddish-brown, those of the middle zone almost always with a scarious margin. Utricles (2.6)4–5.5(6) × (0.8)1.5–2 mm, spreading, broadly ovoid to subglobose, inflated, straw-coloured or brownish, with nerves weakly prominent, abruptly narrowed into a 1.1–1.3 mm long beak, deeply bifid, with the sinus ± acute, smooth. Achenes (0.7)1.3–1.7 × 1–1.2 mm, obovoid in outline, trigonous, brown. 2n = c. 70*, 72–74*, 76*, 82*. [details]

Type specimen 
I think these specimens are Carex longirostrata C.A.Mey.
　https://en.herbariumle.ru/?t=occ&id=50833
　https://en.herbariumle.ru/?t=occ&id=50834
Carex longirostrata C.A.Mey.
　https://hoshinolab.main.jp/labo/colorzukan/sugezk/hagyo/hie/hie.htm
Carex rostrata Stokes
　https://hoshinolab.main.jp/labo/colorzukan/sugezk/kagyo/kafka/kafka.htm
　https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1676990
 [details]
    Definitions

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LanguageName 
Japanese カラフトカサスゲ（Karahuto-kasasuge）  [details]
To Biodiversity Heritage Library (3 publications) (from synonym Trasus ampullaceus Gray)
To Biodiversity Heritage Library (597 publications) (from synonym Carex ampullacea Gooden.)
To Biodiversity Heritage Library (789 publications) 
To European Nucleotide Archive, ENA (Carex rostrata) 
To International Plant Names Index (IPNI) (from synonym Trasus ampullaceus Gray)
To International Plant Names Index (IPNI) (from synonym Carex ampullacea Gooden.)
To International Plant Names Index (IPNI) 
To IUCN Red List (Least Concern) 
To LE Herbarium (Carex rostrata LE00010383 specimen originale 1) 
To LE Herbarium (Carex rostrata LE00010384 type 1) 
To Photos of Cyperaceae by Hoshino Labo. from Japan 
To Plants of the World Online (from synonym Trasus ampullaceus Gray)
To Plants of the World Online 
To Plants of the World Online (from synonym Carex ampullacea Gooden.)
To Royal Botanic Gardens, Kew (Carex rostrata K000960509 type 1) 
To The Plant List (from synonym Carex rostrata f. sparangiformis Murr)
To The Plant List (from synonym Carex rostrata f. rostrata Stokes)
From editor or global species database
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