Cyperaceae taxon details
Cephalocarpus martinhae S.M.Costa
1777528 (urn:lsid:marinespecies.org:taxname:1777528)
accepted
Species
recent only
Costa, S. M.; Thomas, W. W.; Amaral, M. D. C. E. D. (2024). Four new species from Venezuela and identification key to Cephalocarpus (Cryptangieae, Cyperaceae). Phytotaxa. 670(2): 119-126., available online at https://doi.org/10.11646/phytotaxa.670.2.4
page(s): 122 [details] Available for editors
[request]
page(s): 122 [details] Available for editors
[request]
Holotype NY, geounit Amazonas
Holotype NY, geounit Amazonas [details]
Description Monoecious herb: sexes mostly at separate paracladia (male at basal and female at apical ones), monomorphic. Caudex
~1–2...
~1–2...
Description Monoecious herb: sexes mostly at separate paracladia (male at basal and female at apical ones), monomorphic. Caudex
~1–2 mm (2–7 mm including fibrous sheaths remains and adventitious roots). Leaf: sheath glabrous, dark brown;
blade (8) 20–25 × 0.2–0.3 cm, linear-lanceolate, margin sparsely pubescent, generally concolorous, light green to
green. Inflorescence panicle-like, (5) 8–12 paracladia; culm (20) 45–60 × (0.06)0.09–0.15 cm, compressed, glabrous.
Paracladia (lowermost) up to 12 cm long, 3–4 orders; peduncle –8.5 cm long, compressed, glabrous. Involucral bract
(lowermost) leaf-like or reduced to sheath: sheath 1–2 cm long, glabrous, dark-brown; blade 1–3 × 0.07 cm, “V”-
shaped, glabrous, dark-brown. Male spikelet 3–5.5 × 0.8–1.1 mm, 7–9 glumes, 4–5 flowers,1–2 each cluster; glume
(outermost) ~1.5–3.7 mm long, glabrous, mucronate (mucron ~0.3–1.5mm long), dark-brown; stamens 4, connective
projection short-conical with short trichomes. Female spikelet (1.8) 2–3.5 × (0.45) 0.6–0.8 mm, 4–5 (7) glumes;
glume (outermost) ~1.9–3mm long, glabrous, mucronate (mucron ~0.3–0.5 mm long), dark-brown; stigma 3. Fruit
3–5.5 × 0.8–1.7 mm, oblong-elliptic, smooth, ciliate to pubescent apex, main body continuous to the beak; hypogynous
scales 1–1.4 mm long, elliptic, trichome 0.7–1 mm long; beak 1–2.5mm long, narrow-conical, ciliate or pubescent
especially at base [details]
~1–2 mm (2–7 mm including fibrous sheaths remains and adventitious roots). Leaf: sheath glabrous, dark brown;
blade (8) 20–25 × 0.2–0.3 cm, linear-lanceolate, margin sparsely pubescent, generally concolorous, light green to
green. Inflorescence panicle-like, (5) 8–12 paracladia; culm (20) 45–60 × (0.06)0.09–0.15 cm, compressed, glabrous.
Paracladia (lowermost) up to 12 cm long, 3–4 orders; peduncle –8.5 cm long, compressed, glabrous. Involucral bract
(lowermost) leaf-like or reduced to sheath: sheath 1–2 cm long, glabrous, dark-brown; blade 1–3 × 0.07 cm, “V”-
shaped, glabrous, dark-brown. Male spikelet 3–5.5 × 0.8–1.1 mm, 7–9 glumes, 4–5 flowers,1–2 each cluster; glume
(outermost) ~1.5–3.7 mm long, glabrous, mucronate (mucron ~0.3–1.5mm long), dark-brown; stamens 4, connective
projection short-conical with short trichomes. Female spikelet (1.8) 2–3.5 × (0.45) 0.6–0.8 mm, 4–5 (7) glumes;
glume (outermost) ~1.9–3mm long, glabrous, mucronate (mucron ~0.3–0.5 mm long), dark-brown; stigma 3. Fruit
3–5.5 × 0.8–1.7 mm, oblong-elliptic, smooth, ciliate to pubescent apex, main body continuous to the beak; hypogynous
scales 1–1.4 mm long, elliptic, trichome 0.7–1 mm long; beak 1–2.5mm long, narrow-conical, ciliate or pubescent
especially at base [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Cephalocarpus martinhae S.M.Costa. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1777528 on 2025-03-31
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Nomenclature
original description
Costa, S. M.; Thomas, W. W.; Amaral, M. D. C. E. D. (2024). Four new species from Venezuela and identification key to Cephalocarpus (Cryptangieae, Cyperaceae). Phytotaxa. 670(2): 119-126., available online at https://doi.org/10.11646/phytotaxa.670.2.4
page(s): 122 [details] Available for editors [request]
page(s): 122 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
- Type locality
- type locality contained in Amazonas [from specimen] [view specimen]
Holotype NY, geounit Amazonas [details]
From editor or global species database
Description Monoecious herb: sexes mostly at separate paracladia (male at basal and female at apical ones), monomorphic. Caudex~1–2 mm (2–7 mm including fibrous sheaths remains and adventitious roots). Leaf: sheath glabrous, dark brown;
blade (8) 20–25 × 0.2–0.3 cm, linear-lanceolate, margin sparsely pubescent, generally concolorous, light green to
green. Inflorescence panicle-like, (5) 8–12 paracladia; culm (20) 45–60 × (0.06)0.09–0.15 cm, compressed, glabrous.
Paracladia (lowermost) up to 12 cm long, 3–4 orders; peduncle –8.5 cm long, compressed, glabrous. Involucral bract
(lowermost) leaf-like or reduced to sheath: sheath 1–2 cm long, glabrous, dark-brown; blade 1–3 × 0.07 cm, “V”-
shaped, glabrous, dark-brown. Male spikelet 3–5.5 × 0.8–1.1 mm, 7–9 glumes, 4–5 flowers,1–2 each cluster; glume
(outermost) ~1.5–3.7 mm long, glabrous, mucronate (mucron ~0.3–1.5mm long), dark-brown; stamens 4, connective
projection short-conical with short trichomes. Female spikelet (1.8) 2–3.5 × (0.45) 0.6–0.8 mm, 4–5 (7) glumes;
glume (outermost) ~1.9–3mm long, glabrous, mucronate (mucron ~0.3–0.5 mm long), dark-brown; stigma 3. Fruit
3–5.5 × 0.8–1.7 mm, oblong-elliptic, smooth, ciliate to pubescent apex, main body continuous to the beak; hypogynous
scales 1–1.4 mm long, elliptic, trichome 0.7–1 mm long; beak 1–2.5mm long, narrow-conical, ciliate or pubescent
especially at base [details]
