Cyperaceae taxon details
Cephalocarpus pyramidalis S.M.Costa
1777529 (urn:lsid:marinespecies.org:taxname:1777529)
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): 124 [details] Available for editors
[request]
page(s): 124 [details] Available for editors
[request]
Holotype NY, geounit Venezuela
Holotype NY, geounit Venezuela [details]
Description Monoecious herb: sexes intermingled. Caudex 5–12 mm diam. including sheaths remains and adventitious roots. Leaf:
sheath...
sheath...
Description Monoecious herb: sexes intermingled. Caudex 5–12 mm diam. including sheaths remains and adventitious roots. Leaf:
sheath glabrous, reddish-brown after dry; blade ~15 × ~0.5 cm, linear-lanceolate, “V”-shaped and flattened, sparsely
minute ciliate or glabrous except for the blade base margins sparsely minute ciliate, concolorous, reddish brown.
Inflorescence head-like (appearing sessile), single at each prophyll; culm <1 cm, compressed, margins ciliate. Involucral
bract (lowermost) leaf-like: sheath –1.3 mm long, glabrous, reddish-brown after dry; blade –6 × –1.1 mm, “V” in cross
section, margin sparsely and minute ciliate, reddish-brown after dry. Male spikelet ~6 × ~1mm, 5–6 glumes, 1 flower;
glume (outermost) ~3.2 mm long, glabrous, mucronate (mucron ~1.2 mm long); stamens 3,connective projection
short conical and glabrous. Female spikelet ~4.5 × ~1.2 mm, 5–6 glumes, 1 flower; glume (outermost) ~3 mm long,
glabrous, mucronate (mucron 1 mm long); stigmas not observed. Fruit ~3.2 × ~1.1 mm, ellipsoid-hexagonal, smooth,
ciliate at the apex, main body continuous to the beak; hypogynous scales ~3 mm, lanceolate, trichomes up to 1.7 mm
long; beak ~0.85 mm long, triangular, pubescent. [details]
sheath glabrous, reddish-brown after dry; blade ~15 × ~0.5 cm, linear-lanceolate, “V”-shaped and flattened, sparsely
minute ciliate or glabrous except for the blade base margins sparsely minute ciliate, concolorous, reddish brown.
Inflorescence head-like (appearing sessile), single at each prophyll; culm <1 cm, compressed, margins ciliate. Involucral
bract (lowermost) leaf-like: sheath –1.3 mm long, glabrous, reddish-brown after dry; blade –6 × –1.1 mm, “V” in cross
section, margin sparsely and minute ciliate, reddish-brown after dry. Male spikelet ~6 × ~1mm, 5–6 glumes, 1 flower;
glume (outermost) ~3.2 mm long, glabrous, mucronate (mucron ~1.2 mm long); stamens 3,connective projection
short conical and glabrous. Female spikelet ~4.5 × ~1.2 mm, 5–6 glumes, 1 flower; glume (outermost) ~3 mm long,
glabrous, mucronate (mucron 1 mm long); stigmas not observed. Fruit ~3.2 × ~1.1 mm, ellipsoid-hexagonal, smooth,
ciliate at the apex, main body continuous to the beak; hypogynous scales ~3 mm, lanceolate, trichomes up to 1.7 mm
long; beak ~0.85 mm long, triangular, pubescent. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Cephalocarpus pyramidalis S.M.Costa. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1777529 on 2025-03-15
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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): 124 [details] Available for editors [request]
page(s): 124 [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. Caudex 5–12 mm diam. including sheaths remains and adventitious roots. Leaf:sheath glabrous, reddish-brown after dry; blade ~15 × ~0.5 cm, linear-lanceolate, “V”-shaped and flattened, sparsely
minute ciliate or glabrous except for the blade base margins sparsely minute ciliate, concolorous, reddish brown.
Inflorescence head-like (appearing sessile), single at each prophyll; culm <1 cm, compressed, margins ciliate. Involucral
bract (lowermost) leaf-like: sheath –1.3 mm long, glabrous, reddish-brown after dry; blade –6 × –1.1 mm, “V” in cross
section, margin sparsely and minute ciliate, reddish-brown after dry. Male spikelet ~6 × ~1mm, 5–6 glumes, 1 flower;
glume (outermost) ~3.2 mm long, glabrous, mucronate (mucron ~1.2 mm long); stamens 3,connective projection
short conical and glabrous. Female spikelet ~4.5 × ~1.2 mm, 5–6 glumes, 1 flower; glume (outermost) ~3 mm long,
glabrous, mucronate (mucron 1 mm long); stigmas not observed. Fruit ~3.2 × ~1.1 mm, ellipsoid-hexagonal, smooth,
ciliate at the apex, main body continuous to the beak; hypogynous scales ~3 mm, lanceolate, trichomes up to 1.7 mm
long; beak ~0.85 mm long, triangular, pubescent. [details]
