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Cyperaceae taxon details

Rhynchospora scirpoides (Torr.) Griseb.

1681239  (urn:lsid:marinespecies.org:taxname:1681239)

accepted
Species
terrestrial
(of Psilocarya scirpoides Torr.) Torrey, J. (1836). Monograph of North America Cyperaceae. <em>Annals of the Lyceum of Natural History of New York.</em> 3: 239-448., available online at https://www.biodiversitylibrary.org/page/16077440#page/7/mode/1up
page(s): 360 [details] OpenAccess publication
Description Plants annual, cespitose, (20–)30–80(–100) cm; rhizomes absent. Culms erect or ascending, leafy, nearly terete or...  
Description Plants annual, cespitose, (20–)30–80(–100) cm; rhizomes absent. Culms erect or ascending, leafy, nearly terete or obscurely angular, many-ribbed, stiff. Leaves exceeding or exceeded by inflorescences; blades linear, proximally flat, 1–5 mm wide, apex trigonous, tapering. Inflorescences terminal and axillary, clusters of corymbs 1–5, diffuse, branches ascending to divaricate; leafy bracts much exceeding axillary corymbs. Spikelets red brown to dark brown, ovoid lanceoloid, 3–6(–7) mm, apex acute; fertile scales several, narrowly ovate, 2.5–3.5 mm, apex narrowly acute; midrib included or short excurrent. Flowers: perianth absent. Fruits 1.3–1.5 mm; body brown to blackish, tumidly lenticular, nearly orbicular, 0.6–1 × 0.6–1 mm, margins distinct, narrow, flowing into base of tubercle; tubercle flat, narrowly triangular, at least 0.5 mm high, base broadly 2-lobed, apex acuminate. [details]

Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Torr.) Griseb. to Griseb., information provided by Alan E....  
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Torr.) Griseb. to Griseb., information provided by Alan E. on email Oct. 12 2020 More details could be found in The Plant List v [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Rhynchospora scirpoides (Torr.) Griseb.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1681239 on 2025-09-13
Date
action
by
2023-09-06 07:35:01Z
created
2024-12-10 11:47:54Z
unchecked
db_admin
2025-09-10 10:29:29Z
checked

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Nomenclature

original description (of Psilocarya scirpoides Torr.) Torrey, J. (1836). Monograph of North America Cyperaceae. <em>Annals of the Lyceum of Natural History of New York.</em> 3: 239-448., available online at https://www.biodiversitylibrary.org/page/16077440#page/7/mode/1up
page(s): 360 [details] OpenAccess publication

basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details] 

new combination reference Grisebach, A. H. R. (1866). Catalogus plantarum cubensium exhibens collectionem Wrightianam aliasque minores ex insula Cuba missas. , available online at https://www.biodiversitylibrary.org/page/403912#page/3/mode/1up
page(s): 568 [details] 

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Syntype (of Psilocarya scirpoides Torr.) NY 00051347, geounit Rhode I. [details]
Syntype (of Psilocarya scirpoides var. grimesii Fernald & Griscom) NY 00051349, geounit Virginia [details]
From editor or global species database
Description Plants annual, cespitose, (20–)30–80(–100) cm; rhizomes absent. Culms erect or ascending, leafy, nearly terete or obscurely angular, many-ribbed, stiff. Leaves exceeding or exceeded by inflorescences; blades linear, proximally flat, 1–5 mm wide, apex trigonous, tapering. Inflorescences terminal and axillary, clusters of corymbs 1–5, diffuse, branches ascending to divaricate; leafy bracts much exceeding axillary corymbs. Spikelets red brown to dark brown, ovoid lanceoloid, 3–6(–7) mm, apex acute; fertile scales several, narrowly ovate, 2.5–3.5 mm, apex narrowly acute; midrib included or short excurrent. Flowers: perianth absent. Fruits 1.3–1.5 mm; body brown to blackish, tumidly lenticular, nearly orbicular, 0.6–1 × 0.6–1 mm, margins distinct, narrow, flowing into base of tubercle; tubercle flat, narrowly triangular, at least 0.5 mm high, base broadly 2-lobed, apex acuminate. [details]

Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Torr.) Griseb. to Griseb., information provided by Alan E. on email Oct. 12 2020 More details could be found in The Plant List v [details]
    Definitions

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