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Cyperaceae taxon details

Rhynchospora submarginata Kük.

1681268  (urn:lsid:marinespecies.org:taxname:1681268)

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Kükenthal, G. (1949). Vorarbeiten zu einer Monographie der Rhynchosporideae. Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie, 74(3): 375-509.
page(s): 498 [details] 
Description Annuals. Roots fibrous. Culms tufted, erect, 10-60 cm tall, slender, 3-angled, smooth. Leaves basal and 1 or 2 cauline in...  
Description Annuals. Roots fibrous. Culms tufted, erect, 10-60 cm tall, slender, 3-angled, smooth. Leaves basal and 1 or 2 cauline in lower 1/3 of culm, 1/4-3/4 as long as culm; leaf blade linear, 2-2.5 mm wide, glabrous or pubescent, margin slightly involute, apex acuminate. Involucral bracts 3-6, leaflike, to 15 cm, base dilated and densely ciliate, apically slightly involute, sheathless, apex acuminate. Inflorescence a single terminal head, 1.2-2 cm in diam. Spikelets narrowly ovoid, 5-6 mm, shiny, 2-flowered. Glumes 6 or 7, rust-colored, ovate-lanceolate to elliptic-lanceolate; basal 3 or 4 empty, ± smaller; middle glumes ca. 4 mm, each with 1 female flower; apical 2 or 3 glumes each with a male flower. Perianth bristles 6, longer than nutlet and style base, antrorsely scabrous. Stamens 2 or 3; anthers linear, ca. 2 mm; connective slightly evident, reddish, pubescent. Nutlet blackish, linear-oblong, ca. 3.5 mm, sub-biconvex, whitish setulose to almost glabrous; persistent style base pale brown, ca. 1/2 as long as nutlet.  [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Jahrb. Syst. 74: 498 1949 to Bot. Jahrb. Syst. 74: 498 (1949),...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Jahrb. Syst. 74: 498 1949 to Bot. Jahrb. Syst. 74: 498 (1949), 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 submarginata Kük.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1681268 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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2025-09-11 07:33:12Z
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Nomenclature

original description Kükenthal, G. (1949). Vorarbeiten zu einer Monographie der Rhynchosporideae. Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie, 74(3): 375-509.
page(s): 498 [details] 

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

Other

additional source Li, B. Z.; Zhang, S. R. (2024). An updated species checklist and taxonomic synopsis of Cyperaceae in China. <em>Biodiversity Science.</em> 32(7): 24106., available online at https://doi.org/10.17520/biods.2024106 [details] Available for editors  PDF available [request]

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Isotype K, geounit Queensland [details]
From editor or global species database
Description Annuals. Roots fibrous. Culms tufted, erect, 10-60 cm tall, slender, 3-angled, smooth. Leaves basal and 1 or 2 cauline in lower 1/3 of culm, 1/4-3/4 as long as culm; leaf blade linear, 2-2.5 mm wide, glabrous or pubescent, margin slightly involute, apex acuminate. Involucral bracts 3-6, leaflike, to 15 cm, base dilated and densely ciliate, apically slightly involute, sheathless, apex acuminate. Inflorescence a single terminal head, 1.2-2 cm in diam. Spikelets narrowly ovoid, 5-6 mm, shiny, 2-flowered. Glumes 6 or 7, rust-colored, ovate-lanceolate to elliptic-lanceolate; basal 3 or 4 empty, ± smaller; middle glumes ca. 4 mm, each with 1 female flower; apical 2 or 3 glumes each with a male flower. Perianth bristles 6, longer than nutlet and style base, antrorsely scabrous. Stamens 2 or 3; anthers linear, ca. 2 mm; connective slightly evident, reddish, pubescent. Nutlet blackish, linear-oblong, ca. 3.5 mm, sub-biconvex, whitish setulose to almost glabrous; persistent style base pale brown, ca. 1/2 as long as nutlet.  [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Jahrb. Syst. 74: 498 1949 to Bot. Jahrb. Syst. 74: 498 (1949), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]