Cyperaceae taxon details
Eleocharis congesta D.Don
1681050 (urn:lsid:marinespecies.org:taxname:1681050)
accepted
Species
Scirpus congestus (D.Don) Buch.-Ham. ex D.Don · unaccepted
- Variety Eleocharis congesta var. congesta D.Don
- Variety Eleocharis congesta var. japonica (Miq.) T.Koyama
- Variety Eleocharis congesta var. thermalis (Hultén) T.Koyama
- Forma Eleocharis congesta f. dolichochaeta T.Koyama accepted as Eleocharis congesta var. congesta D.Don
- Forma Eleocharis congesta f. soranumaensis Koji Ito accepted as Eleocharis pellucida var. pellucida
- Subspecies Eleocharis congesta subsp. japonica (Miq.) T.Koyama accepted as Eleocharis congesta var. japonica (Miq.) T.Koyama
- Subspecies Eleocharis congesta subsp. subvivipara (Boeckeler) T.Koyama accepted as Eleocharis congesta var. congesta D.Don
- Subspecies Eleocharis congesta subsp. subvivipara (Boeckeler) T.Koyama (uncertain > unassessed)
terrestrial
Not documented
Description Perennials. Rhizomes decumbent. Culms tufted, 10-40 cm tall, 1-1.5 mm thick, slightly firm, subterete, with several...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Prodr. Fl. Nepal. 41. 1825 [26 Jan-1 Feb 1825] to Prodr. Fl. Nepal. :...
Description Perennials. Rhizomes decumbent. Culms tufted, 10-40 cm tall, 1-1.5 mm thick, slightly firm, subterete, with several longitudinal thin ribs. Leaf sheaths 2; cauline sheaths blood-red but later becoming pale blood-red apically, 3-8 cm, mouth truncate, apex mucronate to aristate. Spikelet oblong to narrowly oblong-ovoid, 8-11 × 3-4 mm, densely many flowered, sometimes proliferous at spikelet base, apex obtuse to acute. Basalmost glume empty, amplexicaul for whole spikelet base; fertile glumes blood-red but green medially, tightly imbricate, oblong, ca. 2.2 × 0.9 mm, margin very narrowly hyaline, apex subrounded. Perianth bristles 6, longer than nutlet, slightly densely and shortly retrorsely spinulose. Stigmas 3. Nutlet yellowish to olivaceous, obovoid to ellipsoid, ca. 1 × 0.7 mm, 3-sided, sides convex, angles narrowly costate; persistent style base white, half-oblong, 1/4-1/3 as long and ca. 1/2 as wide as nutlet, spongy initially but hardened when dry, base cap-shaped, apex rounded but becoming pyramidal and acute when dry. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Prodr. Fl. Nepal. 41. 1825 [26 Jan-1 Feb 1825] to Prodr. Fl. Nepal. :...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Prodr. Fl. Nepal. 41. 1825 [26 Jan-1 Feb 1825] to Prodr. Fl. Nepal. : 41 (1825), 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. Eleocharis congesta D.Don. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1681050 on 2025-09-12
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
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 Perennials. Rhizomes decumbent. Culms tufted, 10-40 cm tall, 1-1.5 mm thick, slightly firm, subterete, with several longitudinal thin ribs. Leaf sheaths 2; cauline sheaths blood-red but later becoming pale blood-red apically, 3-8 cm, mouth truncate, apex mucronate to aristate. Spikelet oblong to narrowly oblong-ovoid, 8-11 × 3-4 mm, densely many flowered, sometimes proliferous at spikelet base, apex obtuse to acute. Basalmost glume empty, amplexicaul for whole spikelet base; fertile glumes blood-red but green medially, tightly imbricate, oblong, ca. 2.2 × 0.9 mm, margin very narrowly hyaline, apex subrounded. Perianth bristles 6, longer than nutlet, slightly densely and shortly retrorsely spinulose. Stigmas 3. Nutlet yellowish to olivaceous, obovoid to ellipsoid, ca. 1 × 0.7 mm, 3-sided, sides convex, angles narrowly costate; persistent style base white, half-oblong, 1/4-1/3 as long and ca. 1/2 as wide as nutlet, spongy initially but hardened when dry, base cap-shaped, apex rounded but becoming pyramidal and acute when dry. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Prodr. Fl. Nepal. 41. 1825 [26 Jan-1 Feb 1825] to Prodr. Fl. Nepal. : 41 (1825), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (12 publications) (from synonym Scirpus congestus (D.Don) Buch.-Ham. ex D.Don)
To Biodiversity Heritage Library (29 publications)
To European Nucleotide Archive, ENA (Eleocharis congesta)
To GenBank (3 nucleotides; 1 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Scirpus congestus (D.Don) Buch.-Ham. ex D.Don)
To IUCN Red List (Least Concern)
To Plants of the World Online (from synonym Scirpus congestus (D.Don) Buch.-Ham. ex D.Don)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Eleocharis congesta K000290954 type 1)
To Biodiversity Heritage Library (29 publications)
To European Nucleotide Archive, ENA (Eleocharis congesta)
To GenBank (3 nucleotides; 1 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Scirpus congestus (D.Don) Buch.-Ham. ex D.Don)
To IUCN Red List (Least Concern)
To Plants of the World Online (from synonym Scirpus congestus (D.Don) Buch.-Ham. ex D.Don)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Eleocharis congesta K000290954 type 1)
From editor or global species database
Hosted externally
