Cyperaceae taxon details
Cephalocarpus chimantensis S.M.Costa
1777526 (urn:lsid:marinespecies.org:taxname:1777526)
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 <i>Cephalocarpus</i> (Cryptangieae, Cyperaceae). <em>Phytotaxa.</em> 670(2): 119-126., available online at https://doi.org/10.11646/phytotaxa.670.2.4
page(s): 120 [details] Available for editors
[request]
page(s): 120 [details] Available for editors
[request]
Holotype NY, geounit Venezuela
Holotype NY, geounit Venezuela [details]
Description Monoecious herb: sexes intermingled at paracladia, monomorphic. Caudex ~1.3 mm diam. (4–5 mm diam. including sheaths...
Description Monoecious herb: sexes intermingled at paracladia, monomorphic. Caudex ~1.3 mm diam. (4–5 mm diam. including sheaths remains and adventitious roots). Leaf: sheath pubescent, greenish or brown; blade 3–4.5 × 0.13–0.15 cm, linear-lanceolate, margins and midrib glabrous or sparsely pubescent, concolorous, greenish to reddish-brown after
drying. Inflorescence panicle-like, with 2 paracladia; culm 3 –4.5 × 0.05 –0.07 cm, compressed, glabrous or with
rare trichomes. Paracladia (lowermost) up to 1 cm long, 1 order; peduncle up to 0.6 cm long, compressed, glabrous
to sparsely ciliate. Involucral bract (lowermost) leaf-like: sheath up to 3 mm long, pubescent, reddish-brown; blade
10–13 mm long, “M”-shaped, pubescent, reddish-brown to brownish-green. Male spikelet 3.5–4.5 × 0.7–0.9 mm,
5–6 glumes, 1–2 flowers; glume (outermost) –2.5 mm long, mucronate (mucron up to ~0.1 mm long); stamens 2,
connective projection not observed. Female spikelet ~4 × ~1 mm, 4–5 glumes; glume (outermost) –2.5 mm long,
mucronate (mucron up to ~0.1 mm long); stigmas 3. Fruit 1.3– 1.5 × 0.4–0.6 mm, obtriangular, smooth, short ciliolate
at apex, reddish-brown, with truncate apex; hypogynous scale ~0.3 mm long, elliptic to orbicular, trichomes <0.01 mm
long (sparse); beak ~0.3 mm long, short conical, glabrous. [details]
drying. Inflorescence panicle-like, with 2 paracladia; culm 3 –4.5 × 0.05 –0.07 cm, compressed, glabrous or with
rare trichomes. Paracladia (lowermost) up to 1 cm long, 1 order; peduncle up to 0.6 cm long, compressed, glabrous
to sparsely ciliate. Involucral bract (lowermost) leaf-like: sheath up to 3 mm long, pubescent, reddish-brown; blade
10–13 mm long, “M”-shaped, pubescent, reddish-brown to brownish-green. Male spikelet 3.5–4.5 × 0.7–0.9 mm,
5–6 glumes, 1–2 flowers; glume (outermost) –2.5 mm long, mucronate (mucron up to ~0.1 mm long); stamens 2,
connective projection not observed. Female spikelet ~4 × ~1 mm, 4–5 glumes; glume (outermost) –2.5 mm long,
mucronate (mucron up to ~0.1 mm long); stigmas 3. Fruit 1.3– 1.5 × 0.4–0.6 mm, obtriangular, smooth, short ciliolate
at apex, reddish-brown, with truncate apex; hypogynous scale ~0.3 mm long, elliptic to orbicular, trichomes <0.01 mm
long (sparse); beak ~0.3 mm long, short conical, glabrous. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Cephalocarpus chimantensis S.M.Costa. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1777526 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 <i>Cephalocarpus</i> (Cryptangieae, Cyperaceae). <em>Phytotaxa.</em> 670(2): 119-126., available online at https://doi.org/10.11646/phytotaxa.670.2.4
page(s): 120 [details] Available for editors [request]
page(s): 120 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
Holotype NY, geounit Venezuela [details]
From editor or global species database
Description Monoecious herb: sexes intermingled at paracladia, monomorphic. Caudex ~1.3 mm diam. (4–5 mm diam. including sheaths remains and adventitious roots). Leaf: sheath pubescent, greenish or brown; blade 3–4.5 × 0.13–0.15 cm, linear-lanceolate, margins and midrib glabrous or sparsely pubescent, concolorous, greenish to reddish-brown afterdrying. Inflorescence panicle-like, with 2 paracladia; culm 3 –4.5 × 0.05 –0.07 cm, compressed, glabrous or with
rare trichomes. Paracladia (lowermost) up to 1 cm long, 1 order; peduncle up to 0.6 cm long, compressed, glabrous
to sparsely ciliate. Involucral bract (lowermost) leaf-like: sheath up to 3 mm long, pubescent, reddish-brown; blade
10–13 mm long, “M”-shaped, pubescent, reddish-brown to brownish-green. Male spikelet 3.5–4.5 × 0.7–0.9 mm,
5–6 glumes, 1–2 flowers; glume (outermost) –2.5 mm long, mucronate (mucron up to ~0.1 mm long); stamens 2,
connective projection not observed. Female spikelet ~4 × ~1 mm, 4–5 glumes; glume (outermost) –2.5 mm long,
mucronate (mucron up to ~0.1 mm long); stigmas 3. Fruit 1.3– 1.5 × 0.4–0.6 mm, obtriangular, smooth, short ciliolate
at apex, reddish-brown, with truncate apex; hypogynous scale ~0.3 mm long, elliptic to orbicular, trichomes <0.01 mm
long (sparse); beak ~0.3 mm long, short conical, glabrous. [details]
