Cyperaceae taxon details
Carex manuelbarrosii Jim.Mejías, Donadío, Muñoz-Schüler & A.Mor.Alons.
1793703 (urn:lsid:marinespecies.org:taxname:1793703)
accepted
Species
Carex setifolia var. neuquensis Barros · unaccepted
recent only
Morales-Alonso, A.; Muñoz-Schüler, P.; Pereira-Silva, L.; Donadío, S.; Martín-Bravo, S.; Jiménez-Mejías, P. (2024). A synopsis of <i>Carex</i> subgenus <i>Psyllophorae</i>, sect. <i>Junciformes</i> (Cyperaceae) in South America. <em>Botanical Journal of the Linnean Society.</em> 207(4): 321–361., available online at https://doi.org/10.1093/botlinnean/boae038
page(s): 31 [details] Available for editors
[request]
page(s): 31 [details] Available for editors
[request]
Description Plants cespitose; fertile culms 7.5–34.5 cm × 0.6–1.1 mm, erect, smooth. Leaves 9.4–24 × 0.55–0.9, basal,...
Etymology Commemorating Manuel Barros, 1880–1973, an Argentinian botanist honorary collaborator at Buenos Aires Natural Sciences...
Description Plants cespitose; fertile culms 7.5–34.5 cm × 0.6–1.1 mm, erect, smooth. Leaves 9.4–24 × 0.55–0.9, basal, filiform, erect, slightly scabrid, shorter than the fertile culms. Inflorescence a single, terminal, androgynous spike, 5.2–10.3 × 5–11.6 (12) mm, globose. Bracts 1.5–6.4 cm × 0.4–0.9 mm, sometimes scale-like. Staminate part concealed among the utricles or slightly surpassing them; pistillate part densely flowered, utricles spreading. Pistillate glumes 2.2–7.7 × 1.2–2.8 mm, ovate, aristate, attenuated towards the apex, the middle ones with a 0.4–1.6 mm awn, antrorsely scabrid, greenish middle nerve, and whitish to hyaline margins. Utricles 2.75–3.2 × (0.7) 0.9–2.2 mm, obovate to elliptic, trigonous, pale castaneous, sometimes with darker spots in the middle part of the body, the sides sparsely shortly pubescent to glabrous, the two main lateral nerves with conspicuous spreading pubescence towards the beak, the hairs longer than the ones on the sides if these present, attenuated towards a short stipitate base, stipe 0.25–0.7 mm long; short beak 0.1–0.3 mm long or beakless. Nutlets 1.9–2.5 × 1.1–1.7 mm, ovoid, trigonous, pale brown to yellowish. Rachilla 1.1–1.7 × 0.2–0.55 mm, oblong to elliptic, pale brown to hyaline, laciniate, mucronate. Stigmas 3. [details]
Etymology Commemorating Manuel Barros, 1880–1973, an Argentinian botanist honorary collaborator at Buenos Aires Natural Sciences...
Etymology Commemorating Manuel Barros, 1880–1973, an Argentinian botanist honorary collaborator at Buenos Aires Natural Sciences Museum, with major influence in southern America sedges taxonomy. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex manuelbarrosii Jim.Mejías, Donadío, Muñoz-Schüler & A.Mor.Alons.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1793703 on 2025-09-12
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Nomenclature
original description
Morales-Alonso, A.; Muñoz-Schüler, P.; Pereira-Silva, L.; Donadío, S.; Martín-Bravo, S.; Jiménez-Mejías, P. (2024). A synopsis of <i>Carex</i> subgenus <i>Psyllophorae</i>, sect. <i>Junciformes</i> (Cyperaceae) in South America. <em>Botanical Journal of the Linnean Society.</em> 207(4): 321–361., available online at https://doi.org/10.1093/botlinnean/boae038
page(s): 31 [details] Available for editors [request]
page(s): 31 [details] Available for editors
[request]From editor or global species database
Description Plants cespitose; fertile culms 7.5–34.5 cm × 0.6–1.1 mm, erect, smooth. Leaves 9.4–24 × 0.55–0.9, basal, filiform, erect, slightly scabrid, shorter than the fertile culms. Inflorescence a single, terminal, androgynous spike, 5.2–10.3 × 5–11.6 (12) mm, globose. Bracts 1.5–6.4 cm × 0.4–0.9 mm, sometimes scale-like. Staminate part concealed among the utricles or slightly surpassing them; pistillate part densely flowered, utricles spreading. Pistillate glumes 2.2–7.7 × 1.2–2.8 mm, ovate, aristate, attenuated towards the apex, the middle ones with a 0.4–1.6 mm awn, antrorsely scabrid, greenish middle nerve, and whitish to hyaline margins. Utricles 2.75–3.2 × (0.7) 0.9–2.2 mm, obovate to elliptic, trigonous, pale castaneous, sometimes with darker spots in the middle part of the body, the sides sparsely shortly pubescent to glabrous, the two main lateral nerves with conspicuous spreading pubescence towards the beak, the hairs longer than the ones on the sides if these present, attenuated towards a short stipitate base, stipe 0.25–0.7 mm long; short beak 0.1–0.3 mm long or beakless. Nutlets 1.9–2.5 × 1.1–1.7 mm, ovoid, trigonous, pale brown to yellowish. Rachilla 1.1–1.7 × 0.2–0.55 mm, oblong to elliptic, pale brown to hyaline, laciniate, mucronate. Stigmas 3. [details]Diagnosis A species similar to Carex andina Phil., from which it differs by its scales, exhibiting a greenish coloration at the middle nerve, and whitish to hyaline coloration on the margins, different from the hyaline middle nerve and dark to ferruginous margins of C. andina. Additionally, C. manuelbarrosii scales present an attenuated conspicuous awn (0.4–0.7 mm), different from the small mucro of C. andina (0.1–0.2 mm long). C. manuelbarrosii has an oblong and laciniate rachilla (with lacinia in multiple directions, of a length more than half the rachilla width), while C. andina shows a deltoid, antrorsely scabrid rachilla (with the marginal prickles length less than half the rachilla width). C. manuelbarrosii utricles display conspicuous hairs on the two main lateral nerves while the utricle sides sparsely pilose, glabrescent or glabrous, contrarily to C. andina. [details]
Etymology Commemorating Manuel Barros, 1880–1973, an Argentinian botanist honorary collaborator at Buenos Aires Natural Sciences Museum, with major influence in southern America sedges taxonomy. [details]
