Cyperaceae taxon details
Chaetospora R.Br.
1675600 (urn:lsid:marinespecies.org:taxname:1675600)
accepted
Genus
Chaetospora curvifolia R.Br. (type by subsequent designation)
- Species Chaetospora curvifolia R.Br.
- Species Chaetospora subbulbosa (Benth.) K.L.Wilson & R.L.Barrett
- Species Chaetospora turbinata R.Br.
- Species Chaetospora albescens Franch. & Sav. accepted as Schoenus apogon var. apogon Roem. & Schult.
- Species Chaetospora alpina (R.Br.) F.Muell. accepted as Carpha alpina R.Br.
- Species Chaetospora anceps R.Br. accepted as Gymnoschoenus anceps (R.Br.) C.B.Clarke
- Species Chaetospora antarctica Hook.f. accepted as Schoenus antarcticus (Hook.f.) Dusén
- Species Chaetospora arundinacea (Sol. ex Vahl) A.Dietr. accepted as Tetraria arundinacea (Sol. ex Vahl) T.Koyama
- Species Chaetospora aurata Nees accepted as Schoenus curvifolius (R.Br.) Roem. & Schult. accepted as Chaetospora curvifolia R.Br.
- Species Chaetospora aurea Schltdl. & Cham. accepted as Rhynchospora aristata var. aristata Boeckeler
- Species Chaetospora aurea Kunth accepted as Rhynchospora corymbosa (L.) Britton
- Species Chaetospora avenacea (R.Br.) F.Muell. accepted as Cyathochaeta avenacea (R.Br.) Benth.
- Species Chaetospora axillaris R.Br. accepted as Schoenus maschalinus Roem. & Schult.
- Species Chaetospora brevisetis R.Br. accepted as Schoenus brevisetis (R.Br.) Roem. & Schult.
- Species Chaetospora brevisetis F.Muell. accepted as Schoenus subbulbosus Benth. accepted as Chaetospora subbulbosa (Benth.) K.L.Wilson & R.L.Barrett
- Species Chaetospora burmanni (Vahl) Schrad. accepted as Tetraria burmanni (Vahl) C.B.Clarke
- Species Chaetospora calostachya R.Br. accepted as Schoenus calostachyus (R.Br.) Roem. & Schult.
- Species Chaetospora calostachys R.Br. accepted as Schoenus calostachyus (R.Br.) Roem. & Schult.
- Species Chaetospora capillacea (Thunb.) Nees accepted as Tetraria capillacea (Thunb.) C.B.Clarke
- Species Chaetospora capillacea Hook.f. accepted as Netrostylis capillaris (F.Muell.) R.L.Barrett, J.J.Bruhl & K.L.Wilson
- Species Chaetospora capillaris F.Muell. accepted as Netrostylis capillaris (F.Muell.) R.L.Barrett, J.J.Bruhl & K.L.Wilson
- Species Chaetospora capitata Kunth accepted as Rhynchospora capitata (Kunth) Roem. & Schult.
- Species Chaetospora capitellum (Thunb.) A.Dietr. accepted as Ficinia capitella (Thunb.) Nees
- Species Chaetospora ciliata Schrad. ex Nees accepted as Rhynchospora elatior Kunth
- Species Chaetospora circinalis Schrad. accepted as Tetraria microstachys (Vahl) H.Pfeiff.
- Species Chaetospora clandestina (R.Br.) F.Muell. accepted as Cyathochaeta clandestina (R.Br.) Benth.
- Species Chaetospora compressa (L.) Gray accepted as Blysmus compressus (L.) Panzer ex Link
- Species Chaetospora compressa Nees accepted as Schoenus benthamii F.Muell.
- Species Chaetospora concava (R.Br.) Nees accepted as Lepidosperma concavum R.Br.
- Species Chaetospora concinna Hook.f. accepted as Schoenus nitens var. concinnus (Hook.f.) Cheeseman
- Species Chaetospora cruenta Nees accepted as Schoenus cruentus (Nees) Benth.
- Species Chaetospora cuspidata (Rottb.) Nees accepted as Schoenus cuspidatus Rottb.
- Species Chaetospora cygnea Nees accepted as Schoenus cygneus (Nees) Nees
- Species Chaetospora dactyloides (Vahl) A.Dietr. accepted as Carpha glomerata Nees
- Species Chaetospora deformis R.Br. accepted as Schoenus deformis (R.Br.) Roem. & Schult.
- Species Chaetospora deusta (R.Br.) F.Muell. accepted as Ptilothrix deusta (R.Br.) K.L.Wilson
- Species Chaetospora diandra (R.Br.) F.Muell. accepted as Cyathochaeta diandra (R.Br.) Nees
- Species Chaetospora diodon Schrad. ex Nees accepted as Rhynchospora diodon (Nees) Griseb.
- Species Chaetospora dispar (Spreng.) A.Dietr. accepted as Ficinia secunda (Vahl) Kunth
- Species Chaetospora distachya Nees accepted as Bulbostylis hispidula subsp. hispidula (Vahl) R.W.Haines
- Species Chaetospora distans F.Muell. accepted as Schoenus rigens S.T.Blake
- Species Chaetospora effusa Schrad. ex Kunth accepted as Rhynchospora sparsiflora (Kunth) L.B.Sm.
- Species Chaetospora elongata Nees accepted as Gymnoschoenus anceps (R.Br.) C.B.Clarke (unaccepted > junior subjective synonym)
- Species Chaetospora ferruginea Kunth accepted as Rhynchospora brownii Roem. & Schult.
- Species Chaetospora ferruginea Schltdl. & Cham. accepted as Rhynchospora eximia (Nees) Boeckeler
- Species Chaetospora ferruginea (L.) Rchb. accepted as Schoenus ferrugineus L.
- Species Chaetospora fimbriolata Nees accepted as Tetraria fimbriolata (Nees) C.B.Clarke
- Species Chaetospora fimbristyloides F.Muell. accepted as Anthelepis undulata (Thwaites) R.L.Barrett, K.L.Wilson & J.J.Bruhl
- Species Chaetospora flexuosa (Thunb.) Schrad. accepted as Tetraria flexuosa (Thunb.) C.B.Clarke
- Species Chaetospora globosa Kunth accepted as Rhynchospora globosa (Kunth) Roem. & Schult.
- Species Chaetospora hexandra Boeckeler accepted as Tetraria macowaniana B.L.Burtt
- Species Chaetospora imberbis R.Br. accepted as Schoenus apogon Roem. & Schult.
- Species Chaetospora intermedia (Brügger) Beck accepted as Schoenus scheuchzeri Brügger
- Species Chaetospora japonica Franch. & Sav. accepted as Schoenus apogon var. apogon Roem. & Schult.
- Species Chaetospora lanata (Labill.) R.Br. accepted as Schoenus lanatus Labill. (unaccepted > superseded combination)
- Species Chaetospora laxa Hook.f. accepted as Schoenus rhynchosporoides (Steud.) Kük.
- Species Chaetospora lepidosperma F.Muell. accepted as Schoenus lepidosperma (F.Muell.) K.L.Wilson
- Species Chaetospora lucens Poir. accepted as Schoenus nitens var. nitens (R.Br.) Roem. & Schult.
- Species Chaetospora madagascariensis Steud. accepted as Rhynchospora rubra subsp. africana J.Raynal
- Species Chaetospora mauritii Steud. accepted as Rhynchospora brownii Roem. & Schult.
- Species Chaetospora microstachya Nees ex Lehm. accepted as Schoenus submicrostachyus Kük.
- Species Chaetospora microstachys (Vahl) Schrad. accepted as Tetraria microstachys (Vahl) H.Pfeiff.
- Species Chaetospora nana Nees ex Lehm. accepted as Schoenus nanus (Nees ex Lehm.) Benth.
- Species Chaetospora natans F.Muell. accepted as Schoenus natans (F.Muell.) Benth.
- Species Chaetospora neesii (Lehm.) Boeckeler accepted as Tricostularia neesii Lehm.
- Species Chaetospora nigricans (L.) Kunth accepted as Schoenus nigricans L.
- Species Chaetospora nitens R.Br. accepted as Schoenus nitens (R.Br.) Roem. & Schult.
- Species Chaetospora oligostachya F.Muell. accepted as Schoenus bifidus (Nees) Boeckeler
- Species Chaetospora oligostachya Boeckeler accepted as Schoenus nigricans L.
- Species Chaetospora paludosa R.Br. accepted as Anthelepis paludosa (R.Br.) R.L.Barrett, K.L.Wilson & J.J.Bruhl
- Species Chaetospora pauciflora Hook.f. accepted as Schoenus pauciflorus (Hook.f.) Hook.f.
- Species Chaetospora pedicellata R.Br. accepted as Schoenus pedicellatus (R.Br.) Roem. & Schult.
- Species Chaetospora pterocarpa Kunth accepted as Rhynchospora barbata (Vahl) Kunth
- Species Chaetospora pterosperma Nees accepted as Rhynchospora barbata (Vahl) Kunth
- Species Chaetospora pterosperma Kunth accepted as Rhynchospora barbata (Vahl) Kunth
- Species Chaetospora punctoria (Vahl) A.Dietr. accepted as Neesenbeckia punctoria (Vahl) Levyns
- Species Chaetospora rhynchospermoides F.Phil. accepted as Schoenus rhynchosporoides (Steud.) Kük.
- Species Chaetospora rhynchosporoides Steud. accepted as Schoenus rhynchosporoides (Steud.) Kük.
- Species Chaetospora robusta Kunth accepted as Tetraria robusta (Kunth) C.B.Clarke
- Species Chaetospora rufa (Huds.) Gray accepted as Blysmus rufus (Huds.) Link
- Species Chaetospora schiedeana Schltdl. accepted as Rhynchospora schiedeana Kunth
- Species Chaetospora sphaerocephala R.Br. accepted as Gymnoschoenus sphaerocephalus (R.Br.) Hook.f.
- Species Chaetospora spicata Boeckeler accepted as Tricostularia compressa Nees ex Lehm.
- Species Chaetospora striata (Thunb.) A.Dietr. accepted as Ficinia indica (Lam.) H.Pfeiff.
- Species Chaetospora stygia R.Br. accepted as Mesomelaena stygia (R.Br.) Nees
- Species Chaetospora tenax Hook.f. accepted as Schoenus brevifolius R.Br.
- Species Chaetospora tendo Hook.f. accepted as Schoenus tendo (Hook.f.) Hook.f.
- Species Chaetospora tenuissima Steud. accepted as Schoenus apogon var. apogon Roem. & Schult.
- Species Chaetospora tenuissima Hook.f. accepted as Schoenus lepidosperma subsp. lepidosperma (F.Muell.) K.L.Wilson
- Species Chaetospora teragons R.Br. accepted as Mesomelaena tetragona (R.Br.) Benth. (unaccepted > misspelling - incorrect subsequent spelling, this entry should probably be deleted because it is just a misspelling from an unknown source)
- Species Chaetospora tetragona R.Br. accepted as Mesomelaena tetragona (R.Br.) Benth.
- Species Chaetospora triceps Schltdl. & Cham. accepted as Rhynchospora exaltata Kunth
- Species Chaetospora umbellulifera Boeckeler accepted as Schoenus apogon var. apogon Roem. & Schult.
- Species Chaetospora vicozensis Schrad. accepted as Rhynchospora brownii Roem. & Schult.
- Species Chaetospora villosa (R.Br.) Nees ex Steud. accepted as Schoenus villosus R.Br. (unaccepted > junior objective synonym)
- Species Chaetospora paniculata Steud. (uncertain > unassessed)
- Section Chaetospora sect. Chaetospora R.Br. (uncertain > unassessed)
- Section Chaetospora sect. Lepidospora F.Muell. (uncertain > unassessed)
- Species Chaetospora tenella Rupr. (uncertain > unassessed)
- Species Chaetospora tenera (Spreng.) A.Dietr. (uncertain > unassessed)
terrestrial
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): 232 [details]
page(s): 232 [details]
Description Perennial tufted herbs, 0.1–0.55 m high; plants clonal, usually forming dense tussocks 0.05–0.2 m across; rhizome thin,...
Distribution Three species endemic to the southern Australia, one eastern and two western.
Taxonomic remark Source in seed data: TPL1.1 Update namepublishedIn from Prodr. 232. 1810. to Prodr. Fl. Nov. Holland. : 232 (1810),...
Description Perennial tufted herbs, 0.1–0.55 m high; plants clonal, usually forming dense tussocks 0.05–0.2 m across; rhizome thin, woody, short, branched, 0.8–3.4 mm diam., pseudobulbous; old leaf sheaths covering the rhizome, usually breaking apart into fine fibres with age, straw-coloured to reddish brown; roots sand-binding or not. Culms slender, rigid, erect, 11–53 cm tall, 0.6–2.5 mm broad, not noded, terete to compressed, usually sulcate when dried, smooth, glabrous, green to yellow-green, base not enlarged. Leaves all basal, numerous; phyllotaxy loosely spirotristichous; phyllotaxy loosely spirotristichous; sheath 20–70 mm long, 0.7–2.7 mm wide, broader than the leaf lamina, glabrous or scabrid, straw-coloured to reddish-brown, dull, upper margin membranous, oblique, ligule absent; cauline sheath tight around culm; pseudopetiole obscure or absent; leaves with a well-developed lamina, not exceeding the culms, lamina dorsiventral, 4–21 cm long, 0.3–0.9 mm wide; bases white or brown-membranous, sometimes dividing; lamina ± linear, flat to channelled above, ± flexuous, old leaf tips usually curling, finely multi-striate, glabrous except for margins, green to brown, concolorous, keeled along mid-nerve or not, margins scaberulous, not recurved, apex long-attenuate, setaceous; lowest leaves reduced to a sheath, lamina reduced to a mucro, pale to reddish brown. Inflorescence very contracted, panicle-like or subcapitate and appearing head-like, straight to somewhat flexuous, with 2–6 nodes, 0.5–1.7 cm long, 6–16 mm wide, not interrupted; bracts leaf-like, greatly exceeding the spikelet clusters in length, sheaths in the lower part of the inflorescence open, not or sometimes enveloping the higher bracts, gradually reducing along the inflorescence and often mostly hidden among the spikelets, basal bract spreading to sub-erect, similar to the leaves, much longer than the inflorescence, to 65 mm long; branches erect to spreading, with 2–5 spikelets in a terminal cluster, spikelet(s) on short, terete, glabrous peduncles 0.2–1.4 mm long, arising in each bract axil; basal branchlet 4.5–6.6. mm long (including spikelets); spikelet prophyll present, sheath 0.9–1.5 mm long, brown, partially enclosing the spikelet, with a slender lamina 0.2–1.6 mm long, brown. Spikelets pale to dark brown or chestnut, narrow-ovate, 4.7–8 mm long, 1.2–3.2 mm wide, terete, with 5–9 glumes, only topmost 1 or 3 fertile, the lower 2 flowers when present male fertile, the upper flower bisexual, fertile, no reduced glume above the florets; glumes spirodistichous, basal glume 2.6–4.2 mm long, fertile glumes 3.8–6.2 mm long, 0.9–1.6 mm wide, membranous, pale to dark brown or chestnut, lamina puberulent or glabrous, keel and margins scaberulous, ciliate or denticulate, acute or attenuate, often sparsely scabrous on the keel, usually ciliate on the margins, lamina glabrous, ovate-lanceolate, acute to acuminate or obtuse, with a mucro 0.3–1.2 mm long, keel distinct; rachilla compact and not sinuous in fruiting spikelets. Perianth segments 6, whitish, minute, ± linear, flat to terete, margins with dense to scattered, white, short, antrorse, ciliate or ciliate-plumose hairs, persistent on the nutlet. Stamens 3; anther connective 2.0–6.2 mm long, linear to subulate; anthers yellow, 1.8–3.1 mm long, twisted when dry, with a glabrous apical appendage 0.5–0.8 mm long. Style trifid, base 1.4–3.5 mm long, glabrous, slender throughout, branches 1.3–2.9 mm long, hispidulous. Nutlet stipitate, stipe 0.3–0.5 mm long, somewhat constricted, obovoid to obpyriform, obscurely trigonous, dull, brown to dark brown, reddish brown or grey, 1.4–2.3 mm long including the stipe and style base, 1.0–1.4 mm diam., faces irregularly reticulate to rugulose or tuberculate at 40× magnification, shortly hispidulous to scabrous or tuberculate at the apex, otherwise glabrous; epidermal cells usually square–hexagonal, inconspicuous, with three fine white ribs, style base not enlarged, thin, sometimes part of the [details]
Distribution Three species endemic to the southern Australia, one eastern and two western.
Distribution Three species endemic to the southern Australia, one eastern and two western. [details]
Taxonomic remark Source in seed data: TPL1.1 Update namepublishedIn from Prodr. 232. 1810. to Prodr. Fl. Nov. Holland. : 232 (1810),...
Taxonomic remark Source in seed data: TPL1.1 Update namepublishedIn from Prodr. 232. 1810. to Prodr. Fl. Nov. Holland. : 232 (1810), 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. Chaetospora R.Br.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1675600 on 2025-09-11
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Nomenclature
original description
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): 232 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 232 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Taxonomy
redescription
Barrett, R. L.; Wilson, K. L.; Bruhl, J. J. (2020). Reinstatement and revision of the genus <i>Chaetospora</i> (Cyperaceae: Schoeneae). <em>Telopea.</em> 23: 95-112., available online at https://doi.org/10.7751/telopea14345
page(s): 96 [details] Available for editors
[request]
page(s): 96 [details] Available for editors

From editor or global species database
Description Perennial tufted herbs, 0.1–0.55 m high; plants clonal, usually forming dense tussocks 0.05–0.2 m across; rhizome thin, woody, short, branched, 0.8–3.4 mm diam., pseudobulbous; old leaf sheaths covering the rhizome, usually breaking apart into fine fibres with age, straw-coloured to reddish brown; roots sand-binding or not. Culms slender, rigid, erect, 11–53 cm tall, 0.6–2.5 mm broad, not noded, terete to compressed, usually sulcate when dried, smooth, glabrous, green to yellow-green, base not enlarged. Leaves all basal, numerous; phyllotaxy loosely spirotristichous; phyllotaxy loosely spirotristichous; sheath 20–70 mm long, 0.7–2.7 mm wide, broader than the leaf lamina, glabrous or scabrid, straw-coloured to reddish-brown, dull, upper margin membranous, oblique, ligule absent; cauline sheath tight around culm; pseudopetiole obscure or absent; leaves with a well-developed lamina, not exceeding the culms, lamina dorsiventral, 4–21 cm long, 0.3–0.9 mm wide; bases white or brown-membranous, sometimes dividing; lamina ± linear, flat to channelled above, ± flexuous, old leaf tips usually curling, finely multi-striate, glabrous except for margins, green to brown, concolorous, keeled along mid-nerve or not, margins scaberulous, not recurved, apex long-attenuate, setaceous; lowest leaves reduced to a sheath, lamina reduced to a mucro, pale to reddish brown. Inflorescence very contracted, panicle-like or subcapitate and appearing head-like, straight to somewhat flexuous, with 2–6 nodes, 0.5–1.7 cm long, 6–16 mm wide, not interrupted; bracts leaf-like, greatly exceeding the spikelet clusters in length, sheaths in the lower part of the inflorescence open, not or sometimes enveloping the higher bracts, gradually reducing along the inflorescence and often mostly hidden among the spikelets, basal bract spreading to sub-erect, similar to the leaves, much longer than the inflorescence, to 65 mm long; branches erect to spreading, with 2–5 spikelets in a terminal cluster, spikelet(s) on short, terete, glabrous peduncles 0.2–1.4 mm long, arising in each bract axil; basal branchlet 4.5–6.6. mm long (including spikelets); spikelet prophyll present, sheath 0.9–1.5 mm long, brown, partially enclosing the spikelet, with a slender lamina 0.2–1.6 mm long, brown. Spikelets pale to dark brown or chestnut, narrow-ovate, 4.7–8 mm long, 1.2–3.2 mm wide, terete, with 5–9 glumes, only topmost 1 or 3 fertile, the lower 2 flowers when present male fertile, the upper flower bisexual, fertile, no reduced glume above the florets; glumes spirodistichous, basal glume 2.6–4.2 mm long, fertile glumes 3.8–6.2 mm long, 0.9–1.6 mm wide, membranous, pale to dark brown or chestnut, lamina puberulent or glabrous, keel and margins scaberulous, ciliate or denticulate, acute or attenuate, often sparsely scabrous on the keel, usually ciliate on the margins, lamina glabrous, ovate-lanceolate, acute to acuminate or obtuse, with a mucro 0.3–1.2 mm long, keel distinct; rachilla compact and not sinuous in fruiting spikelets. Perianth segments 6, whitish, minute, ± linear, flat to terete, margins with dense to scattered, white, short, antrorse, ciliate or ciliate-plumose hairs, persistent on the nutlet. Stamens 3; anther connective 2.0–6.2 mm long, linear to subulate; anthers yellow, 1.8–3.1 mm long, twisted when dry, with a glabrous apical appendage 0.5–0.8 mm long. Style trifid, base 1.4–3.5 mm long, glabrous, slender throughout, branches 1.3–2.9 mm long, hispidulous. Nutlet stipitate, stipe 0.3–0.5 mm long, somewhat constricted, obovoid to obpyriform, obscurely trigonous, dull, brown to dark brown, reddish brown or grey, 1.4–2.3 mm long including the stipe and style base, 1.0–1.4 mm diam., faces irregularly reticulate to rugulose or tuberculate at 40× magnification, shortly hispidulous to scabrous or tuberculate at the apex, otherwise glabrous; epidermal cells usually square–hexagonal, inconspicuous, with three fine white ribs, style base not enlarged, thin, sometimes part of the [details]Distribution Three species endemic to the southern Australia, one eastern and two western. [details]
Identification This genus is characterised by the combination of pseudobulbous bases, leaves with a well-developed lamina; a capitate or turbinate inflorescence subtended by several involucral bracts that greatly exceed the spikelets; the inflorescence branches supporting 1–3 spikelets each, the branches very short and hidden below the spikelets; a non-flexuous, straight rachilla with very short internodes; and flattened to terete, hairy perianth segments. [details]
Taxonomic remark Source in seed data: TPL1.1 Update namepublishedIn from Prodr. 232. 1810. to Prodr. Fl. Nov. Holland. : 232 (1810), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
Type designation A lectotype for the genus was chosen by Barrett et al. (2020a) while revising the genus, allowing the name to be separated from Schoenus and used for three species endemic to southern Australia. [details]