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Cyperaceae taxon details

Rhynchospora microcarpa Baldwin ex A.Gray

1681155  (urn:lsid:marinespecies.org:taxname:1681155)

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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): 202 [details] 
Description Plants perennial, cespitose, to 100 cm; rhizomes absent. Culms erect to ascending, arching, lax, leafy, slender, trigonous....  
Description Plants perennial, cespitose, to 100 cm; rhizomes absent. Culms erect to ascending, arching, lax, leafy, slender, trigonous. Leaves exceeded by inflorescence; blades ascending to spreading, linear, proximally flat, 1–2(–3) mm wide, apex trigonous, subulate, tapering. Inflorescences: spikelet clusters 4–6, mostly dense, widely spaced, narrowly turbinate to ellipsoid; peduncles erect to ascending, branches ascending; leafy bracts exceeding proximal clusters. Spikelets dark brown, ovoid, 2–3 mm, apex acute; fertile scales broadly ovate to ± orbiculate, cupulate, 1.5–2 mm, apex rounded to acute, midrib included or excurrent as bristle. Flowers: perianth bristles 6, from vestigial to (rarely) reaching tubercle tip, antrorsely barbellate. Fruits 2–3 per spikelet, 1.2–1.5 mm; body brown, obovoid to globose, lenticular, 1–1.2 × 0.8–1 mm, margins narrow, distinct; surfaces sharply transversely wavy rugose, intervals with rows of vertical, broadly rectangular or ± isodiametric alveolae; tubercle low triangular or triangular, compressed, 0.2–0.3 mm, base lunate. [details]

Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from Baldwin ex A.Gray to Baldw. ex A.Gray, information provided...  
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from Baldwin ex A.Gray to Baldw. ex A.Gray, information provided by Alan E. on email Oct. 12 2020 More details could be found in The P [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Rhynchospora microcarpa Baldwin ex A.Gray. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1681155 on 2025-09-13
Date
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2023-09-06 07:35:01Z
created
2024-12-10 11:47:54Z
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2025-09-05 08:01:18Z
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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): 202 [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 PH 00042758, geounit Georgia [details]
From editor or global species database
Description Plants perennial, cespitose, to 100 cm; rhizomes absent. Culms erect to ascending, arching, lax, leafy, slender, trigonous. Leaves exceeded by inflorescence; blades ascending to spreading, linear, proximally flat, 1–2(–3) mm wide, apex trigonous, subulate, tapering. Inflorescences: spikelet clusters 4–6, mostly dense, widely spaced, narrowly turbinate to ellipsoid; peduncles erect to ascending, branches ascending; leafy bracts exceeding proximal clusters. Spikelets dark brown, ovoid, 2–3 mm, apex acute; fertile scales broadly ovate to ± orbiculate, cupulate, 1.5–2 mm, apex rounded to acute, midrib included or excurrent as bristle. Flowers: perianth bristles 6, from vestigial to (rarely) reaching tubercle tip, antrorsely barbellate. Fruits 2–3 per spikelet, 1.2–1.5 mm; body brown, obovoid to globose, lenticular, 1–1.2 × 0.8–1 mm, margins narrow, distinct; surfaces sharply transversely wavy rugose, intervals with rows of vertical, broadly rectangular or ± isodiametric alveolae; tubercle low triangular or triangular, compressed, 0.2–0.3 mm, base lunate. [details]

Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from Baldwin ex A.Gray to Baldw. ex A.Gray, information provided by Alan E. on email Oct. 12 2020 More details could be found in The P [details]