Cyperaceae taxon details
Rhynchospora gracillima Thwaites
1679609 (urn:lsid:marinespecies.org:taxname:1679609)
accepted
Species
terrestrial
Thwaites, G. H. K.; Hooker, J. D. (eds). (1858-1864). Enumeratio plantarum Zeylaniae: An enumeration of Ceylon plants, with descriptions of the new and little known genera and species, observations on their habitats, uses, native names, etc. Parts 1-5., available online at https://www.biodiversitylibrary.org/page/528363#page/1/mode/1up
page(s): 435 [details]
page(s): 435 [details]
Description Annuals or short-lived perennials. Culms densely tufted, 20-60 cm tall, filiform, 3-angled, smooth. Leaves shorter than...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Enum. Pl. Zeyl. [Thwaites] 435. 1864 [Dec 1864] to Enum. Pl. Zeyl. :...
Description Annuals or short-lived perennials. Culms densely tufted, 20-60 cm tall, filiform, 3-angled, smooth. Leaves shorter than culm; leaf blade setaceous, 0.5-1 mm wide, canaliculate, apex scabrous. Involucral bracts setaceous, sheathing. Inflorescences laxly paniculate, consisting of 1-3 corymbiform anthelae to 4 cm; terminal anthela longer than lateral ones, simple or subcompound; lateral anthelae simple, with peduncles exserted from sheaths; rays capillary, 2-4 cm, often upcurved, smooth, subtended by setaceous bractlets. Spikelets solitary, narrowly ovoid, 3- or 4-flowered, apex acute; peduncle long. Glumes 7 or 8, pale rust-colored with purplish lines, spirally imbricate, broadly ovate, membranous, muticous. Perianth bristles absent. Stamens 2; anthers 1.5-2.3 mm. Style ca. 2.3 mm, base much depressed, saddle-shaped, 2-lobed, and almost as broad as nutlet, apex 2-cleft to middle. Nutlet grayish white, shortly stipitate, broadly obovoid, 1.3-1.5 × 1.3-1.5 mm, biconvex, deeply transversely wavy ridged, with longitudinally linear epidermal cells, apex truncate. Fl. and fr. Sep-Oct. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Enum. Pl. Zeyl. [Thwaites] 435. 1864 [Dec 1864] to Enum. Pl. Zeyl. :...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Enum. Pl. Zeyl. [Thwaites] 435. 1864 [Dec 1864] to Enum. Pl. Zeyl. : 435 (1864), 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 gracillima Thwaites. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1679609 on 2025-09-13
Date
action
by
2024-12-10 11:47:54Z
unchecked
db_admin
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
original description
Thwaites, G. H. K.; Hooker, J. D. (eds). (1858-1864). Enumeratio plantarum Zeylaniae: An enumeration of Ceylon plants, with descriptions of the new and little known genera and species, observations on their habitats, uses, native names, etc. Parts 1-5., available online at https://www.biodiversitylibrary.org/page/528363#page/1/mode/1up
page(s): 435 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 435 [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 
[request]
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description Annuals or short-lived perennials. Culms densely tufted, 20-60 cm tall, filiform, 3-angled, smooth. Leaves shorter than culm; leaf blade setaceous, 0.5-1 mm wide, canaliculate, apex scabrous. Involucral bracts setaceous, sheathing. Inflorescences laxly paniculate, consisting of 1-3 corymbiform anthelae to 4 cm; terminal anthela longer than lateral ones, simple or subcompound; lateral anthelae simple, with peduncles exserted from sheaths; rays capillary, 2-4 cm, often upcurved, smooth, subtended by setaceous bractlets. Spikelets solitary, narrowly ovoid, 3- or 4-flowered, apex acute; peduncle long. Glumes 7 or 8, pale rust-colored with purplish lines, spirally imbricate, broadly ovate, membranous, muticous. Perianth bristles absent. Stamens 2; anthers 1.5-2.3 mm. Style ca. 2.3 mm, base much depressed, saddle-shaped, 2-lobed, and almost as broad as nutlet, apex 2-cleft to middle. Nutlet grayish white, shortly stipitate, broadly obovoid, 1.3-1.5 × 1.3-1.5 mm, biconvex, deeply transversely wavy ridged, with longitudinally linear epidermal cells, apex truncate. Fl. and fr. Sep-Oct. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Enum. Pl. Zeyl. [Thwaites] 435. 1864 [Dec 1864] to Enum. Pl. Zeyl. : 435 (1864), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (20 publications)
To European Nucleotide Archive, ENA (Rhynchospora gracillima)
To Genève Herbarium (Rhynchospora gracillima G00191930 type 1)
To Genève Herbarium (Rhynchospora gracillima G00191931 type 1)
To International Plant Names Index (IPNI)
To IUCN Red List (Least Concern)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Rhynchospora gracillima K000357555 type 1)
To European Nucleotide Archive, ENA (Rhynchospora gracillima)
To Genève Herbarium (Rhynchospora gracillima G00191930 type 1)
To Genève Herbarium (Rhynchospora gracillima G00191931 type 1)
To International Plant Names Index (IPNI)
To IUCN Red List (Least Concern)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Rhynchospora gracillima K000357555 type 1)
From editor or global species database
Hosted externally
Hosted externally
Hosted externally
