Cyperaceae - Bolboschoenus glaucus (Lam.) S.G.Sm.

(of Scirpus glaucus Lam.) Lamarck, J.-B.; Poiret, J.-L.-M. (1791). Tableau encyclopédique et méthodique des trois règnes de la nature. Botanique. pp. 1-200. Paris., available online at https://www.biodiversitylibrary.org/page/43510631#page/11/mode/1up
page(s): 142 [details]

Type data

Holotype (of Scirpus glaucus Lam.) P, geounit Senegal

Holotype (of Scirpus glaucus Lam.) P, geounit Senegal [details]

Descriptive notes

Description Rizomas reptantes hasta de 4 mm de diámetro. Tallos 45–100(150) cm, de 1,5–7,5(10) mm de diámetro, agudamente...

Description Rizomas reptantes hasta de 4 mm de diámetro. Tallos 45–100(150) cm, de 1,5–7,5(10) mm de diámetro, agudamente trígonos, generalmente escábridos hacia el ápice, verdes o glaucos, con un cormo de 6–13 mm de diámetro. Hojas 2,1–7,2(8) cm de anchura, planas, aquilladas o plegadas, generalmente antrorso-escábridas en los bordes y el nervio medio por el envés; ápice de la cara ventral de la vaina con un área triangular libre de nervios, de textura escariosa o herbácea, a veces teñida de oscuro, muy raramente los nervios no divergen y esta área no existe. Inflorescencia formada por una antela ± desarrollada, simple, más raramente una vez ramificada, en la que, por lo general, la mayoría de las espiguillas se hallan en grupos pedunculados; la inflorescencia se compone de (5)6–53(65) espiguillas, de las cuales (1)3–40(53) están dispuestas en (1)2–7 fascículos pedunculados, sobre radios de 12–62(70) mm, cada uno de los cuales porta 1–9(11) espiguillas; muy excepcionalmente la inflorescencia está reducida a un fascículo sésil de 4–5 espiguillas; brácteas 2(–3), planas a aquilladas, la inferior de 2,3–7(8) mm, de contorno ovado a lanceolado, más raramente linear-oblongo o subelíptico, con 14–64(90) flores. Glumas 4–7 × 1,6–4 mm, elípticas u ovadas, de ápice asimétricamente emarginado y mucronado, con la escotadura de 0,2–1,3(1,5) mm, el ápice de los dientes agudo o acuminado y el mucrón de 0,8–2,6(2,8) mm, antrorso-escábrido, de 0,2–0,5 mm de anchura en la base; de textura generalmente escariosa, a veces con los márgenes antrorso-escábridos, de color pardo oscuro o pardo-rojizo oscuro, más raramente pardo amarillento, siempre con el nervio medio más claro. Anteras amarillas, apiculadas, con el mucrón antrorso-escábrido, a veces teñido de pardo-rojizo, al igual que el conectivo. Estilo con 3 estigmas. Aquenios 1,8–3 × 1,3–2,2 mm, de contorno obovado o con menor frecuencia suborbicular u obpiriforme, obtusamente trígonos a plano-convexos, en ocasiones con la cara adaxial algo cóncava, generalmente pardo oscuro en estado maduro, más raramente pardo claro u oliváceo de color amarillento cuando jóvenes, lisos, brillantes; exocarpo formado por células de longitud al menos dos veces mayor que la anchura, de grosor hasta 1/2 el del mesocarpo; cerdas periánticas 4–6, antrorso-escábridas, pardas, rojizas o amarillentas, menores o iguales que el aquenio, más raramente algo mayores, que se desprenden al caer el aquenio o siguen permaneciendo 1–5×. [details]

Description Culms to 150 cm × 1.5–3 mm. Leaves: sheaths reaching ± to middle of culm, fronts truncate to convex, membranous at...

Description Culms to 150 cm × 1.5–3 mm. Leaves: sheaths reaching ± to middle of culm, fronts truncate to convex, membranous at mouth, veins diverging proximal to apex leaving acutely triangular veinless area; widest blade 2–6 mm wide. Inflorescences subumbellate, all or most spikelets solitary or in clusters of 2–7 on 3–11 rays, rays not exceeding 9 cm; involucral bracts that surpass inflorescence 1–3, widest bract 2–3 mm wide. Spikelets 3–30, ovoid to narrowly lanceoloid or cylindric, 10–40 × 3–5 mm; scales loosely imbricate, orange-brown to stramineous, 5–6 × 2.5 mm, membranous, transparent, apex 2-fid 0.5–1 mm deep, awns slender, 1–2 × 0.25 mm at base. Flowers: perianth bristles mostly tightly attached to shed achene, medium brown, much shorter than to equaling achene; anthers yellow, 3 mm; styles (2–)3-fid. Achenes pale brown to blackish brown, cuneate-obovate, clearly to obscurely trigonous or some thickly biconvex, angles rounded, 2.5–3.3 × 1.3–2.3 mm, apex rounded, beak minute, surface glossy, exocarp cells not evident at 20X, in cross section 1/3 of mesocarp thickness, cells isodiametric; achene specific gravity greater than water. 2n = 110 (Czech Republic). [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Novon 5(1): 101. 1995 [27 March 1995] to Novon 5: 101 (1995),...

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Novon 5(1): 101. 1995 [27 March 1995] to Novon 5: 101 (1995), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]

Taxonomic citation

Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Bolboschoenus glaucus (Lam.) S.G.Sm.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1678635 on 2025-11-28

Taxonomic edit history

Date

action

2023-09-06 07:35:01Z

created

Larridon, Isabel

2024-12-10 11:47:54Z

unchecked

db_admin

2024-12-23 09:42:42Z

changed

Márquez-Corro, José Ignacio

2025-10-23 09:29:46Z

checked

Marco Rosado, Nuria

Licensing

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

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Nomenclature

original description (of Scirpus glaucus Lam.) Lamarck, J.-B.; Poiret, J.-L.-M. (1791). Tableau encyclopédique et méthodique des trois règnes de la nature. Botanique. pp. 1-200. Paris., available online at https://www.biodiversitylibrary.org/page/43510631#page/11/mode/1up
page(s): 142 [details]

basis of record Hroudová, Z.; Zákravský, P.; Ducháček, M.; Marhold, K. (2007). Taxonomy, distribution and ecology of Bolboschoenus in Europe. <em>Ann. Bot. Fennici.</em> 44: 81-102.
page(s): 84 [details] Available for editors

[request]

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

new combination reference Smith, S.G. (1995). New Combinations in North American Schoenoplectus, Bolboschoenus, Isolepis, and Trichophorum (Cyperaceae). <em>Novon a journal of botanical nomenclature from the Missouri Botanical Garden.</em> 5(1): 97-102., available online at https://www.biodiversitylibrary.org/page/651631#page/97/mode/1up
page(s): 101 [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 Hoenselaar, K.; Verdcourt, B.; Beentje, H.J. (2010). Cyperaceae. In: H.J. Beentje (ed). Flora of Tropical East Africa, 472 pp. Royal Botanic Gardens, Kew., available online at https://kew.iro.bl.uk/downloads/e6c6e145-4e6e-419b-a8b6-f808b06f437e?locale=en
page(s): 23 [details]

Present

Inaccurate

Introduced: alien

Containing type locality

Holotype (of Scirpus glaucus Lam.) P, geounit Senegal [details]

Unknown type PRC 445832, geounit Romania [details]

Unknown type PRC 445833, geounit Montenegro [details]

Unknown type PRC 445834, geounit Greece [details]

Unknown type PRC 445835, geounit Greece [details]

From editor or global species database

Translation Creeping rhizomes up to 4 mm in diameter. Stems 45–100(150) cm tall, 1.5–7.5(10) mm in diameter, sharply trigonous, generally scabrous towards the apex, green or glaucous, with a corm 6–13 mm in diameter. Leaves 2.1–7.2(8) cm wide, flat, keeled or folded, generally antrorsely scabrous on the margins and on the midrib on the abaxial surface; apex of the ventral face of the sheath with a triangular, nerve-free area, of scarious or herbaceous texture, sometimes dark-tinged; very rarely the nerves do not diverge and this area is absent. Inflorescence forming a ± developed antela, simple, more rarely once-branched, in which generally most spikelets are arranged in pedunculate groups; the inflorescence consists of (5)6–53(65) spikelets, of which (1)3–40(53) are arranged in (1)2–7 pedunculate fascicles on rays 12–62(70) mm long, each bearing 1–9(11) spikelets; very exceptionally the inflorescence is reduced to a sessile fascicle of 4–5 spikelets; bracts 2(–3), flat to keeled, the lower one 2.3–7(8) mm long, ovate to lanceolate in outline, more rarely linear-oblong or subelliptic, with 14–64(90) flowers. Glumes 4–7 × 1.6–4 mm, elliptic to ovate, with an asymmetrically emarginate and mucronate apex, the notch 0.2–1.3(1.5) mm deep, the teeth acute or acuminate and the mucro 0.8–2.6(2.8) mm long, antrorsely scabrous, 0.2–0.5 mm wide at the base; texture generally scarious, sometimes with antrorsely scabrous margins, dark brown or dark reddish-brown, more rarely yellowish-brown, always with a paler midrib. Anthers yellow, apiculate, with an antrorsely scabrous mucro, sometimes dark reddish-brown, as is the connective. Style with 3 stigmas. Achenes 1.8–3 × 1.3–2.2 mm, obovate or, less frequently, suborbicular or obpyriform in outline, obtusely trigonous to plano-convex, sometimes with the adaxial face slightly concave, generally dark brown at maturity, more rarely pale brown or yellowish-olive when young, smooth, shiny; exocarp composed of cells at least twice as long as wide, up to half the thickness of the mesocarp; perianth bristles 4–6, antrorsely scabrous, brown, reddish or yellowish, shorter than or equal to the achene, more rarely slightly longer, shed when the achene falls or sometimes remaining 1–5× longer. [details]

Definitions