Cyperaceae taxon details
Cyperus michelianus (L.) Delile
1680205 (urn:lsid:marinespecies.org:taxname:1680205)
accepted
Species
Cyperus pygmaeus var. michelianus (L.) Boeckeler · unaccepted
Dichostylis micheliana (L.) Nees · unaccepted
Fimbristylis micheliana (L.) Rchb. · unaccepted
Isolepis micheliana (L.) Roem. & Schult. · unaccepted
Juncellus michelianus (L.) Blatt. & McCann · unaccepted
Scirpus michelianus L. · unaccepted
- Subspecies Cyperus michelianus subsp. michelianus (L.) Delile
- Subspecies Cyperus michelianus subsp. pygmaeus (Rottb.) Asch. & Graebn.
- Forma Cyperus michelianus f. elatus Kük. accepted as Cyperus michelianus subsp. michelianus (L.) Delile
- Forma Cyperus michelianus f. exiguus Kük. accepted as Cyperus nipponicus Franch. & Sav.
- Forma Cyperus michelianus f. hilgendorfianus (Boeckeler) Kük. accepted as Cyperus hilgendorfianus Boeckeler
- Variety Cyperus michelianus var. nipponicus (Franch. & Sav.) Kük. accepted as Cyperus nipponicus Franch. & Sav.
- Variety Cyperus michelianus var. pacificus Ohwi accepted as Cyperus pacificus (Ohwi) Ohwi
terrestrial
Not documented
Description Herbácea, anual, cespitosa. Tallos (0,3)1,5-6,7(10,6) cm, solitarios o agrupados en fascículos ± densos, rectos,...
Description Annuals. Roots many, fibrous. Culms densely tufted, 2-25 cm tall, compressed 3-angled, smooth, few leaved, base not...
Taxonomic remark Source in seed data: wcs More details could be found in The Plant List v.1.1. Originally in The Plant List v.1.0
Description Herbácea, anual, cespitosa. Tallos (0,3)1,5-6,7(10,6) cm, solitarios o agrupados en fascículos ± densos, rectos, trígonos. Hojas (0,9)2,5-5,3(8,5) cm × 0,6-2,2 mm, generalmente de menor longitud que los tallos, la mayoría basales, de modo que dejan desnudo el tallo en su mitad superior, planas o a veces carenadas, antroso-escábridas; lígula membranácea, muy corta. Inflorescencia terminal, en antela compuesta, de 3-14 mm, con los radios primarios de 0,1-3 mm, a veces muy reducidos, lo que da a la inflorescencia una apariencia compacta, capituliforme, con los radios terminales rematados por un fascículo denso de numerosas espiguillas; brácteas (2)3, generalmente hasta 8, planas o aquilladas, antroso-escábridas en los márgenes e inferiormente a lo largo del nervio medio. Espiguillas (2,1)3-5,8(8,1) × (0,5)0,7-1(1,4) mm, lanceoladas, de sección ± circular, con 7-30 flores; raquidio recto, áptero. Glumas 1,1-2,7 × 0,4-0,9 mm, en disposición helicoidal, densamente imbricadas, lanceoladas a oval-lanceoladas, agudas, atenuadas en un pequeño mucrón, poco coriáceas en la parte superior, membranáceas inferiormente, de coloración pajiza, con una banda central verdosa; nervios 1-3. Estambres 2, exertos en la antesis. Estilo corto, con 3 estigmas. Aquenios 1-1,5 × 0,2-0,4 mm, de longitud claramente menor (< 1/2) que la gluma, oblongos-elipsoides, obtusamente trígonos, de color amarillo-pajizo cuando jóvenes, pardo oscuro en la madurez. [details]
Description Annuals. Roots many, fibrous. Culms densely tufted, 2-25 cm tall, compressed 3-angled, smooth, few leaved, base not...
Description Annuals. Roots many, fibrous. Culms densely tufted, 2-25 cm tall, compressed 3-angled, smooth, few leaved, base not swollen. Leaves shorter to slightly longer than culm; sheath purplish red, short; leaf blade 1-2.5 mm wide, flat or folded. Involucral bracts 3-6, leaflike, much longer than inflorescence, base broad. Inflorescences capitate, pyramidal-ovoid, ovoid, or subglobose, 0.5-1.5 cm in diam., with numerous spikelets. Spikelets densely aggregated at apex of short rays, ovoid to narrowly oblong-ovoid, 3-4 × ca. 1.5 mm, 10-20-flowered or more. Glumes yellowish white but sometimes middle yellowish brown to reddish brown striate, spirally imbricate, oblong-lanceolate, ca. 2 mm, slightly hyaline, 3-5-veined, keel green, apex elongated into a recurved mucro. Stamens (1 or)2; anthers oblong. Style long; stigmas 2(or 3), usually yellow papillate. Nutlet narrowly oblong, ca. 1 mm, 3-sided or plano-convex, margin with white hyaline cells. [details]
Taxonomic remark Source in seed data: wcs More details could be found in The Plant List v.1.1. Originally in The Plant List v.1.0
Taxonomic remark Source in seed data: wcs More details could be found in The Plant List v.1.1. Originally in The Plant List v.1.0 [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Cyperus michelianus (L.) Delile. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1680205 on 2026-01-04
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
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 
[request]
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description Herbácea, anual, cespitosa. Tallos (0,3)1,5-6,7(10,6) cm, solitarios o agrupados en fascículos ± densos, rectos, trígonos. Hojas (0,9)2,5-5,3(8,5) cm × 0,6-2,2 mm, generalmente de menor longitud que los tallos, la mayoría basales, de modo que dejan desnudo el tallo en su mitad superior, planas o a veces carenadas, antroso-escábridas; lígula membranácea, muy corta. Inflorescencia terminal, en antela compuesta, de 3-14 mm, con los radios primarios de 0,1-3 mm, a veces muy reducidos, lo que da a la inflorescencia una apariencia compacta, capituliforme, con los radios terminales rematados por un fascículo denso de numerosas espiguillas; brácteas (2)3, generalmente hasta 8, planas o aquilladas, antroso-escábridas en los márgenes e inferiormente a lo largo del nervio medio. Espiguillas (2,1)3-5,8(8,1) × (0,5)0,7-1(1,4) mm, lanceoladas, de sección ± circular, con 7-30 flores; raquidio recto, áptero. Glumas 1,1-2,7 × 0,4-0,9 mm, en disposición helicoidal, densamente imbricadas, lanceoladas a oval-lanceoladas, agudas, atenuadas en un pequeño mucrón, poco coriáceas en la parte superior, membranáceas inferiormente, de coloración pajiza, con una banda central verdosa; nervios 1-3. Estambres 2, exertos en la antesis. Estilo corto, con 3 estigmas. Aquenios 1-1,5 × 0,2-0,4 mm, de longitud claramente menor (< 1/2) que la gluma, oblongos-elipsoides, obtusamente trígonos, de color amarillo-pajizo cuando jóvenes, pardo oscuro en la madurez. [details]Description Annuals. Roots many, fibrous. Culms densely tufted, 2-25 cm tall, compressed 3-angled, smooth, few leaved, base not swollen. Leaves shorter to slightly longer than culm; sheath purplish red, short; leaf blade 1-2.5 mm wide, flat or folded. Involucral bracts 3-6, leaflike, much longer than inflorescence, base broad. Inflorescences capitate, pyramidal-ovoid, ovoid, or subglobose, 0.5-1.5 cm in diam., with numerous spikelets. Spikelets densely aggregated at apex of short rays, ovoid to narrowly oblong-ovoid, 3-4 × ca. 1.5 mm, 10-20-flowered or more. Glumes yellowish white but sometimes middle yellowish brown to reddish brown striate, spirally imbricate, oblong-lanceolate, ca. 2 mm, slightly hyaline, 3-5-veined, keel green, apex elongated into a recurved mucro. Stamens (1 or)2; anthers oblong. Style long; stigmas 2(or 3), usually yellow papillate. Nutlet narrowly oblong, ca. 1 mm, 3-sided or plano-convex, margin with white hyaline cells. [details]
Taxonomic remark Source in seed data: wcs More details could be found in The Plant List v.1.1. Originally in The Plant List v.1.0 [details]
Translation Annual, caespitose herb. Stems (0.3)1.5–6.7(10.6) cm, solitary or grouped in ± dense fascicles, straight, trigonous. Leaves (0.9)2.5–5.3(8.5) cm × 0.6–2.2 mm, generally shorter than the stems, mostly basal, leaving the upper half of the stem naked; flat or sometimes keeled, antrorsely scabrous; ligule membranous, very short. Inflorescence terminal, in a compound anthela, 3–14 mm long, with primary rays 0.1–3 mm long, sometimes very reduced, giving the inflorescence a compact, capituliform appearance, with terminal rays ending in a dense fascicle of numerous spikelets; bracts (2)3, generally up to 8, flat or keeled, antrorsely scabrous along the margins and below along the midrib. Spikelets (2.1)3–5.8(8.1) × (0.5)0.7–1(1.4) mm, lanceolate, ± circular in cross section, with 7–30 flowers; rachilla straight, wingless. Glumes 1.1–2.7 × 0.4–0.9 mm, helically arranged, densely imbricate, lanceolate to ovate-lanceolate, acute, attenuate into a small mucro, slightly coriaceous in the upper part, membranous below, straw-coloured, with a greenish central band; veins 1–3. Stamens 2, exerted at anthesis. Style short, with 3 stigmas. Achenes 1–1.5 × 0.2–0.4 mm, clearly shorter (< 1/2) than the glume, oblong-ellipsoid, obtusely trigonous, yellow-straw coloured when young, dark brown at maturity. [details]
To Biodiversity Heritage Library (1 publication) (from synonym Fimbristylis micheliana (L.) Rchb.)
To Biodiversity Heritage Library (1 publication) (from synonym Juncellus michelianus (L.) Blatt. & McCann)
To Biodiversity Heritage Library (26 publications)
To Biodiversity Heritage Library (46 publications) (from synonym Scirpus michelianus L.)
To Biodiversity Heritage Library (5 publications) (from synonym Dichostylis micheliana (L.) Nees)
To Biodiversity Heritage Library (7 publications) (from synonym Isolepis micheliana (L.) Roem. & Schult.)
To European Nucleotide Archive, ENA (Cyperus michelianus)
To GenBank (3 nucleotides; 208 proteins)
To GenBank (3 nucleotides; 208 proteins) (from synonym Scirpus michelianus L.)
To International Plant Names Index (IPNI) (from synonym Cyperus pygmaeus var. michelianus (L.) Boeckeler)
To International Plant Names Index (IPNI) (from synonym Isolepis micheliana (L.) Roem. & Schult.)
To International Plant Names Index (IPNI) (from synonym Scirpus michelianus L.)
To International Plant Names Index (IPNI) (from synonym Fimbristylis micheliana (L.) Rchb.)
To International Plant Names Index (IPNI) (from synonym Dichostylis micheliana (L.) Nees)
To International Plant Names Index (IPNI) (from synonym Juncellus michelianus (L.) Blatt. & McCann)
To IUCN Red List (Least Concern)
To Plants of the World Online (from synonym Fimbristylis micheliana (L.) Rchb.)
To Plants of the World Online
To Plants of the World Online (from synonym Dichostylis micheliana (L.) Nees)
To Plants of the World Online (from synonym Juncellus michelianus (L.) Blatt. & McCann)
To Plants of the World Online (from synonym Scirpus michelianus L.)
To Plants of the World Online (from synonym Isolepis micheliana (L.) Roem. & Schult.)
To Plants of the World Online (from synonym Cyperus pygmaeus var. michelianus (L.) Boeckeler)
To Biodiversity Heritage Library (1 publication) (from synonym Juncellus michelianus (L.) Blatt. & McCann)
To Biodiversity Heritage Library (26 publications)
To Biodiversity Heritage Library (46 publications) (from synonym Scirpus michelianus L.)
To Biodiversity Heritage Library (5 publications) (from synonym Dichostylis micheliana (L.) Nees)
To Biodiversity Heritage Library (7 publications) (from synonym Isolepis micheliana (L.) Roem. & Schult.)
To European Nucleotide Archive, ENA (Cyperus michelianus)
To GenBank (3 nucleotides; 208 proteins)
To GenBank (3 nucleotides; 208 proteins) (from synonym Scirpus michelianus L.)
To International Plant Names Index (IPNI) (from synonym Cyperus pygmaeus var. michelianus (L.) Boeckeler)
To International Plant Names Index (IPNI) (from synonym Isolepis micheliana (L.) Roem. & Schult.)
To International Plant Names Index (IPNI) (from synonym Scirpus michelianus L.)
To International Plant Names Index (IPNI) (from synonym Fimbristylis micheliana (L.) Rchb.)
To International Plant Names Index (IPNI) (from synonym Dichostylis micheliana (L.) Nees)
To International Plant Names Index (IPNI) (from synonym Juncellus michelianus (L.) Blatt. & McCann)
To IUCN Red List (Least Concern)
To Plants of the World Online (from synonym Fimbristylis micheliana (L.) Rchb.)
To Plants of the World Online
To Plants of the World Online (from synonym Dichostylis micheliana (L.) Nees)
To Plants of the World Online (from synonym Juncellus michelianus (L.) Blatt. & McCann)
To Plants of the World Online (from synonym Scirpus michelianus L.)
To Plants of the World Online (from synonym Isolepis micheliana (L.) Roem. & Schult.)
To Plants of the World Online (from synonym Cyperus pygmaeus var. michelianus (L.) Boeckeler)
