Cyperaceae taxon details
Mesomelaena tetragona (R.Br.) Benth.
1678581 (urn:lsid:marinespecies.org:taxname:1678581)
accepted
Species
Chaetospora teragons R.Br. · unaccepted > misspelling - incorrect subsequent spelling (this entry should probably be...)
this entry should probably be deleted because it is just a misspelling from an unknown source
Chaetospora tetragona R.Br. · unaccepted
Mesomelaena bicapitata Steud. · unaccepted
Schoenus tetragonus (R.Br.) Roem. & Schult. · unaccepted
recent only
(of Chaetospora tetragona R.Br.) Brown, R. (1810). Prodromus florae Novae Hollandiae et Insulae Van-Diemen, exhibens characteres plantarum quas annis 1802-1805 per oras utriusque insulae collegit et descripsit Robertus Brown; insertis passim aliis speciebus auctori hucusque cognitis, seu evulgatis, seu ineditis, praesertim Banksianis, in primo itinere navarchi Cook detectis. Vol. 1 pp. [i]-viii, 145-590 p., [1] h. ["Addenda"]. Londini [London]: typis Richardi Taylori et Scoii. Veneunt apud J. Johnson et Socios, in Caementerio Sancti Pauli., available online at https://www.biodiversitylibrary.org/page/6157371
page(s): 233 [details]
page(s): 233 [details]
Lectotype (of Chaetospora tetragona R.Br.) BM...
Lectotype (of Chaetospora tetragona R.Br.) BM 000798968, geounit Western Australia [details]
Description Culms erect, trigonous, ± smooth or scabrous below the inflorescence, I-noded,
yellow-green, 30-70 cm high, c. 2.5 mm...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Flora Australiensis 7 1878 to Fl. Austral. 7: 379 (1878),...
yellow-green, 30-70 cm high, c. 2.5 mm...
Description Culms erect, trigonous, ± smooth or scabrous below the inflorescence, I-noded,
yellow-green, 30-70 cm high, c. 2.5 mm diam. Leaf-sheaths compressed laterally,
pink- or yellow-brown becoming black-brown at maturity, shining, remaining intact;
ligule a narrow, shining, brown-black chartaceous band; leaf-blades 20-55 cm long,
channelled, scabrous and tetragonous or nearly flat near the. apex. Inflorescence
large, ± compressed due to surrounding broad bases of bracts, 1.5-3 cm diam.
Involucral bracts: 2-3 more than three times as long as the inflorescence, 10-30 cm
long; with several to numerous bracts within the inflorescence to twice as long as it;
the bases of the outer bracts very broadened, scabrous, brown turning black with age.
Spikelets c. 10 mm long; glumes c. 6, with an erect awn. Anthers 2.5-3.0 mm long,
with an apical appendage c. I mm long. Nut 5.0-6.0 mm long, 2.5-3.0 mm diam.,
yellowish with brown-black spots on upper portion, ovate-oblong; gynophore
yellOWish, occasio~ally with brown-black spots, with a very narrow disc. [details]
yellow-green, 30-70 cm high, c. 2.5 mm diam. Leaf-sheaths compressed laterally,
pink- or yellow-brown becoming black-brown at maturity, shining, remaining intact;
ligule a narrow, shining, brown-black chartaceous band; leaf-blades 20-55 cm long,
channelled, scabrous and tetragonous or nearly flat near the. apex. Inflorescence
large, ± compressed due to surrounding broad bases of bracts, 1.5-3 cm diam.
Involucral bracts: 2-3 more than three times as long as the inflorescence, 10-30 cm
long; with several to numerous bracts within the inflorescence to twice as long as it;
the bases of the outer bracts very broadened, scabrous, brown turning black with age.
Spikelets c. 10 mm long; glumes c. 6, with an erect awn. Anthers 2.5-3.0 mm long,
with an apical appendage c. I mm long. Nut 5.0-6.0 mm long, 2.5-3.0 mm diam.,
yellowish with brown-black spots on upper portion, ovate-oblong; gynophore
yellOWish, occasio~ally with brown-black spots, with a very narrow disc. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Flora Australiensis 7 1878 to Fl. Austral. 7: 379 (1878),...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Flora Australiensis 7 1878 to Fl. Austral. 7: 379 (1878), 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. Mesomelaena tetragona (R.Br.) Benth.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1678581 on 2025-09-13
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Nomenclature
original description
(of Chaetospora tetragona R.Br.) Brown, R. (1810). Prodromus florae Novae Hollandiae et Insulae Van-Diemen, exhibens characteres plantarum quas annis 1802-1805 per oras utriusque insulae collegit et descripsit Robertus Brown; insertis passim aliis speciebus auctori hucusque cognitis, seu evulgatis, seu ineditis, praesertim Banksianis, in primo itinere navarchi Cook detectis. Vol. 1 pp. [i]-viii, 145-590 p., [1] h. ["Addenda"]. Londini [London]: typis Richardi Taylori et Scoii. Veneunt apud J. Johnson et Socios, in Caementerio Sancti Pauli., available online at https://www.biodiversitylibrary.org/page/6157371
page(s): 233 [details]
original description (of Mesomelaena bicapitata Steud.) Steudel, E.G. (1855). Synopsis Plantarum Glumacearum. Cyperaceae et familiae affines, Restiaceae, Eriocauloneae, Xyrideae, Desvauxieae, Junceae. Pars II, pp. 1-348. J.B. Metzler. Stuttgart., available online at https://www.biodiversitylibrary.org/page/348937, https://archive.org/details/mobot31753002755921/mode/2up?view=theater
page(s): 163 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
new combination reference Bentham, G. (1878). Flora australiensis: a description of the plants of the Australian territory. vol. 7, pp. 2-806. L. Reeve, Covent Garden, London., available online at https://www.biodiversitylibrary.org/page/11265831
page(s): 379 [details]
page(s): 233 [details]
original description (of Mesomelaena bicapitata Steud.) Steudel, E.G. (1855). Synopsis Plantarum Glumacearum. Cyperaceae et familiae affines, Restiaceae, Eriocauloneae, Xyrideae, Desvauxieae, Junceae. Pars II, pp. 1-348. J.B. Metzler. Stuttgart., available online at https://www.biodiversitylibrary.org/page/348937, https://archive.org/details/mobot31753002755921/mode/2up?view=theater
page(s): 163 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
new combination reference Bentham, G. (1878). Flora australiensis: a description of the plants of the Australian territory. vol. 7, pp. 2-806. L. Reeve, Covent Garden, London., available online at https://www.biodiversitylibrary.org/page/11265831
page(s): 379 [details]
Present Inaccurate Introduced: alien Containing type locality
Lectotype (of Chaetospora tetragona R.Br.) BM 000798968, geounit Western Australia [details]
From editor or global species database
Description Culms erect, trigonous, ± smooth or scabrous below the inflorescence, I-noded,yellow-green, 30-70 cm high, c. 2.5 mm diam. Leaf-sheaths compressed laterally,
pink- or yellow-brown becoming black-brown at maturity, shining, remaining intact;
ligule a narrow, shining, brown-black chartaceous band; leaf-blades 20-55 cm long,
channelled, scabrous and tetragonous or nearly flat near the. apex. Inflorescence
large, ± compressed due to surrounding broad bases of bracts, 1.5-3 cm diam.
Involucral bracts: 2-3 more than three times as long as the inflorescence, 10-30 cm
long; with several to numerous bracts within the inflorescence to twice as long as it;
the bases of the outer bracts very broadened, scabrous, brown turning black with age.
Spikelets c. 10 mm long; glumes c. 6, with an erect awn. Anthers 2.5-3.0 mm long,
with an apical appendage c. I mm long. Nut 5.0-6.0 mm long, 2.5-3.0 mm diam.,
yellowish with brown-black spots on upper portion, ovate-oblong; gynophore
yellOWish, occasio~ally with brown-black spots, with a very narrow disc. [details]
New combination New combination in Mesomelaena in Bentham (1878, p. 379) [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Flora Australiensis 7 1878 to Fl. Austral. 7: 379 (1878), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (1 publication) (from synonym Mesomelaena bicapitata Steud.)
To Biodiversity Heritage Library (14 publications)
To Biodiversity Heritage Library (2 publications) (from synonym Schoenus tetragonus (R.Br.) Roem. & Schult.)
To Biodiversity Heritage Library (9 publications) (from synonym Chaetospora tetragona R.Br.)
To European Nucleotide Archive, ENA (Mesomelaena tetragona)
To GenBank (5 nucleotides; 1 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Chaetospora tetragona R.Br.)
To International Plant Names Index (IPNI) (from synonym Mesomelaena bicapitata Steud.)
To International Plant Names Index (IPNI) (from synonym Schoenus tetragonus (R.Br.) Roem. & Schult.)
To New York Botanical Garden Steere Herbarium (Mesomelaena_tetragona_NY11617_type_1)
To Plants of the World Online
To Plants of the World Online (from synonym Mesomelaena bicapitata Steud.)
To Plants of the World Online (from synonym Schoenus tetragonus (R.Br.) Roem. & Schult.)
To Plants of the World Online (from synonym Chaetospora tetragona R.Br.)
To Royal Botanic Garden Edinburgh Herbarium (Chaetospora tetragona E00688598 type 1) (from synonym Chaetospora tetragona R.Br.)
To the Natural History Museum, London (Mesomelaena tetragona (R.Br.) F.Muell. BM000798968 type 1)
To the Natural History Museum, London (Mesomelaena tetragona (R.Br.) F.Muell. BM000798969 type 1)
To The Plant List (from synonym Chaetospora teragons R.Br.)
To Biodiversity Heritage Library (14 publications)
To Biodiversity Heritage Library (2 publications) (from synonym Schoenus tetragonus (R.Br.) Roem. & Schult.)
To Biodiversity Heritage Library (9 publications) (from synonym Chaetospora tetragona R.Br.)
To European Nucleotide Archive, ENA (Mesomelaena tetragona)
To GenBank (5 nucleotides; 1 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Chaetospora tetragona R.Br.)
To International Plant Names Index (IPNI) (from synonym Mesomelaena bicapitata Steud.)
To International Plant Names Index (IPNI) (from synonym Schoenus tetragonus (R.Br.) Roem. & Schult.)
To New York Botanical Garden Steere Herbarium (Mesomelaena_tetragona_NY11617_type_1)
To Plants of the World Online
To Plants of the World Online (from synonym Mesomelaena bicapitata Steud.)
To Plants of the World Online (from synonym Schoenus tetragonus (R.Br.) Roem. & Schult.)
To Plants of the World Online (from synonym Chaetospora tetragona R.Br.)
To Royal Botanic Garden Edinburgh Herbarium (Chaetospora tetragona E00688598 type 1) (from synonym Chaetospora tetragona R.Br.)
To the Natural History Museum, London (Mesomelaena tetragona (R.Br.) F.Muell. BM000798968 type 1)
To the Natural History Museum, London (Mesomelaena tetragona (R.Br.) F.Muell. BM000798969 type 1)
To The Plant List (from synonym Chaetospora teragons R.Br.)
From editor or global species database
