Cyperaceae taxon details
Carex mesoamericana Lois, Jim.Mejías, Acedo, S.González & Reznicek
1845435 (urn:lsid:marinespecies.org:taxname:1845435)
accepted
Species
terrestrial
Lois, R.; Reznicek, A. A.; González-Elizondo, M. S.; Cano, A.; Acedo, C.; Jiménez-Mejías, P. (2025). When basics are much needed: morphometric exploration of twenty-one known species of the Neotropical
<i>Carex</i>
sect.
<i>Fecundae</i>
(Cyperaceae) reveals eighteen neglected new species. <em>Botanical Journal of the Linnean Society.</em> , available online at https://doi.org/10.1093/botlinnean/boaf097 [details] Available for editors 
[request]
[request]
Holotype MO 2915774
Holotype MO 2915774 [details]
Description Culms 120–160 cm × 2–3 mm. Basal sheaths brownish. Leaves at least 60–100 cm × 4.6–12.1 mm largest one, oldest...
Distribution Central American Cordillera, from north Honduras to Nicaragua, also in the Sierra de Talamanca in Costa Rica.
Etymology The epithet mesoamericana refers to Central America, from the Greek meso-, middle.
Description Culms 120–160 cm × 2–3 mm. Basal sheaths brownish. Leaves at least 60–100 cm × 4.6–12.1 mm largest one, oldest ones brownish at the base. Inflorescence racemose, 13–25 cm long, with (15)45–70 lateral spikes, spreading or dropping. Proximal-most bract 10–25 cm × 2–3 mm, subequal to the inflorescence. Spikes 2.8–6.8 cm × 3.6–6.7 mm, linear, densely flowered, the distal 1/4 staminate, unbranched, with about 80–150 female flowers, peduncles sometimes scabrous, subequal or shorter than the spikes. Pistillate glumes 2.3–4.4 × 0.8–1.2 mm, lanceolate, acute, awn 0.2–0.9 mm, purplish-black. Stigmas 3. Utricles 3.3–3.6 × 0.9–1.1 mm, narrowly elliptic, smooth, nerves raised, constricted at the apex into a 0.9–1.2 mm long straight beak, smooth, bidentate, teeth 0.2–0.7 mm long. Nutlets 2.4–2.6 × 0.7–1.1 mm, elliptical, usually not invaginated. [details]
Distribution Central American Cordillera, from north Honduras to Nicaragua, also in the Sierra de Talamanca in Costa Rica.
Distribution Central American Cordillera, from north Honduras to Nicaragua, also in the Sierra de Talamanca in Costa Rica. [details]
Etymology The epithet mesoamericana refers to Central America, from the Greek meso-, middle.
Etymology The epithet mesoamericana refers to Central America, from the Greek meso-, middle. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex mesoamericana Lois, Jim.Mejías, Acedo, S.González & Reznicek. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1845435 on 2025-12-14
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Nomenclature
original description
Lois, R.; Reznicek, A. A.; González-Elizondo, M. S.; Cano, A.; Acedo, C.; Jiménez-Mejías, P. (2025). When basics are much needed: morphometric exploration of twenty-one known species of the Neotropical
<i>Carex</i>
sect.
<i>Fecundae</i>
(Cyperaceae) reveals eighteen neglected new species. <em>Botanical Journal of the Linnean Society.</em> , available online at https://doi.org/10.1093/botlinnean/boaf097 [details] Available for editors [request]
[request]
Present Inaccurate Introduced: alien Containing type locality
Holotype MO 2915774 [details]
From editor or global species database
Description Culms 120–160 cm × 2–3 mm. Basal sheaths brownish. Leaves at least 60–100 cm × 4.6–12.1 mm largest one, oldest ones brownish at the base. Inflorescence racemose, 13–25 cm long, with (15)45–70 lateral spikes, spreading or dropping. Proximal-most bract 10–25 cm × 2–3 mm, subequal to the inflorescence. Spikes 2.8–6.8 cm × 3.6–6.7 mm, linear, densely flowered, the distal 1/4 staminate, unbranched, with about 80–150 female flowers, peduncles sometimes scabrous, subequal or shorter than the spikes. Pistillate glumes 2.3–4.4 × 0.8–1.2 mm, lanceolate, acute, awn 0.2–0.9 mm, purplish-black. Stigmas 3. Utricles 3.3–3.6 × 0.9–1.1 mm, narrowly elliptic, smooth, nerves raised, constricted at the apex into a 0.9–1.2 mm long straight beak, smooth, bidentate, teeth 0.2–0.7 mm long. Nutlets 2.4–2.6 × 0.7–1.1 mm, elliptical, usually not invaginated. [details]Distribution Central American Cordillera, from north Honduras to Nicaragua, also in the Sierra de Talamanca in Costa Rica. [details]
Etymology The epithet mesoamericana refers to Central America, from the Greek meso-, middle. [details]
Habitat Wet zones of primary cloud forests. 1000-2700 m. [details]
From editor or global species database
