Cyperaceae taxon details
Rhynchospora megalocarpa A.Gray
1681148 (urn:lsid:marinespecies.org:taxname:1681148)
accepted
Species
Phaeocephalum dodecandrum House · unaccepted
Rhynchospora dodecandra Baldwin ex A.Gray · unaccepted
Rhynchospora pycnocarpa A.Gray · unaccepted
terrestrial
Gray, M. D. (1835). A monograph of the North American species of Rhynchospora. <em>Annals of the Lyceum of Natural History of New York.</em> 3: 190-219., available online at https://www.biodiversitylibrary.org/page/16077147#page/198/mode/1up
page(s): 208 [details]
page(s): 208 [details]
Description Plants perennial, cespitose, to 130 cm, coarse; rhizomes scaly, stoloniferous, stout. Culms erect to arching, leafy,...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York iii. (1835) 208. f. 16. to Ann....
Description Plants perennial, cespitose, to 130 cm, coarse; rhizomes scaly, stoloniferous, stout. Culms erect to arching, leafy, trigonous, slender, firm. Leaves overtopped by culms; blades linear, proximally flat, 3–7 mm wide, apex trigonous, subulate, tapering. Inflorescences: spikelet clusters 2–6, sparse, widely spaced, turbinate; peduncles and branches ascending; leafy bracts exceeding proximal clusters. Spikelets light red brown, ovoid to ellipsoid, (4–)5–8(–9) mm, apex acute or acuminate; fertile scales ovate, (5.5–)6–6.5(–7) mm, midrib included or short excurrent. Fruits 1–2 per spikelet, (3.5–)4–5 mm; body dark brown to mahogany or nearly black, broadly obovoid, tumid, nearly smooth, buttressed to tubercle; tubercle low conic, rimmed, 0.7(–1) mm, apex apiculate. Flowers: perianth bristles 6(–8), mostly reaching from fruit midbody to tubercle base, antrorsely barbellate. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York iii. (1835) 208. f. 16. to Ann....
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York iii. (1835) 208. f. 16. to Ann. Lyceum Nat. Hist. New York 3: 208 (1835), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Rhynchospora megalocarpa A.Gray. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1681148 on 2025-09-13
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2024-12-10 11:47:54Z
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Nomenclature
original description
Gray, M. D. (1835). A monograph of the North American species of Rhynchospora. <em>Annals of the Lyceum of Natural History of New York.</em> 3: 190-219., available online at https://www.biodiversitylibrary.org/page/16077147#page/198/mode/1up
page(s): 208 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 208 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Present Inaccurate Introduced: alien Containing type locality
Syntype (of Rhynchospora dodecandra Baldwin ex A.Gray) NY 51385, geounit Florida [details]
Syntype NY 00051405, geounit Florida [details]
From editor or global species database
Description Plants perennial, cespitose, to 130 cm, coarse; rhizomes scaly, stoloniferous, stout. Culms erect to arching, leafy, trigonous, slender, firm. Leaves overtopped by culms; blades linear, proximally flat, 3–7 mm wide, apex trigonous, subulate, tapering. Inflorescences: spikelet clusters 2–6, sparse, widely spaced, turbinate; peduncles and branches ascending; leafy bracts exceeding proximal clusters. Spikelets light red brown, ovoid to ellipsoid, (4–)5–8(–9) mm, apex acute or acuminate; fertile scales ovate, (5.5–)6–6.5(–7) mm, midrib included or short excurrent. Fruits 1–2 per spikelet, (3.5–)4–5 mm; body dark brown to mahogany or nearly black, broadly obovoid, tumid, nearly smooth, buttressed to tubercle; tubercle low conic, rimmed, 0.7(–1) mm, apex apiculate. Flowers: perianth bristles 6(–8), mostly reaching from fruit midbody to tubercle base, antrorsely barbellate. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Ann. Lyceum Nat. Hist. New York iii. (1835) 208. f. 16. to Ann. Lyceum Nat. Hist. New York 3: 208 (1835), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (1 publication) (from synonym Phaeocephalum dodecandrum House)
To Biodiversity Heritage Library (24 publications)
To Biodiversity Heritage Library (3 publications) (from synonym Rhynchospora pycnocarpa A.Gray)
To Biodiversity Heritage Library (30 publications) (from synonym Rhynchospora dodecandra Baldwin ex A.Gray)
To European Nucleotide Archive, ENA (Rhynchospora megalocarpa)
To GenBank (3 nucleotides; 3 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Phaeocephalum dodecandrum House)
To International Plant Names Index (IPNI) (from synonym Rhynchospora dodecandra Baldwin ex A.Gray)
To International Plant Names Index (IPNI) (from synonym Rhynchospora pycnocarpa A.Gray)
To New York Botanical Garden Steere Herbarium (Rhynchospora_dodecandra_NY51385_type_1) (from synonym Rhynchospora dodecandra Baldwin ex A.Gray)
To New York Botanical Garden Steere Herbarium (Rhynchospora_megalocarpa_NY51405_type_1)
To Plants of the World Online (from synonym Phaeocephalum dodecandrum House)
To Plants of the World Online (from synonym Rhynchospora dodecandra Baldwin ex A.Gray)
To Plants of the World Online
To Plants of the World Online (from synonym Rhynchospora pycnocarpa A.Gray)
To Biodiversity Heritage Library (24 publications)
To Biodiversity Heritage Library (3 publications) (from synonym Rhynchospora pycnocarpa A.Gray)
To Biodiversity Heritage Library (30 publications) (from synonym Rhynchospora dodecandra Baldwin ex A.Gray)
To European Nucleotide Archive, ENA (Rhynchospora megalocarpa)
To GenBank (3 nucleotides; 3 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Phaeocephalum dodecandrum House)
To International Plant Names Index (IPNI) (from synonym Rhynchospora dodecandra Baldwin ex A.Gray)
To International Plant Names Index (IPNI) (from synonym Rhynchospora pycnocarpa A.Gray)
To New York Botanical Garden Steere Herbarium (Rhynchospora_dodecandra_NY51385_type_1) (from synonym Rhynchospora dodecandra Baldwin ex A.Gray)
To New York Botanical Garden Steere Herbarium (Rhynchospora_megalocarpa_NY51405_type_1)
To Plants of the World Online (from synonym Phaeocephalum dodecandrum House)
To Plants of the World Online (from synonym Rhynchospora dodecandra Baldwin ex A.Gray)
To Plants of the World Online
To Plants of the World Online (from synonym Rhynchospora pycnocarpa A.Gray)
From editor or global species database
Hosted externally, from synonym
Hosted externally
