Cyperaceae taxon details
Eleocharis robbinsii Oakes
1680562 (urn:lsid:marinespecies.org:taxname:1680562)
accepted
Species
Trichophyllum robbinsii (Oakes) House · unaccepted
terrestrial
Not documented
Description Plants perennial; rhizomes (0.5–)1–2 mm thick, longer internodes 2–3 cm, scales 5–7 mm; tubers sometimes present,...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Mag. Hort. Bot. 7: 178 1841 to Mag. Hort. Bot. 7: 178 (1841),...
Description Plants perennial; rhizomes (0.5–)1–2 mm thick, longer internodes 2–3 cm, scales 5–7 mm; tubers sometimes present, apical, ovoid, 4–8 × 3–4 mm. Culms acutely trigonous; spikelet-bearing culms 16–70 cm × 0.7–0.9 mm; when submersed plants often forming numerous, filiform, flaccid culms without spikelets, sometimes with whorls of slender branches, 0.1–0.3 mm wide; soft, sometimes septate-nodulose when aquatic, internally spongy, transverse septa incomplete. Leaves: distal leaf sheaths persistent or decaying, membranous, apex obtuse to acuminate. Spikelets sometimes proliferous (when submerged), 9–33 × 1.5–3 mm; rachilla joints bearing prominent winglike remnants of floral scales; proximal scale with a flower, amplexicaulous, (5–)6–9.8 mm; floral scales 4–18, 0.5–1 per mm of rachilla, stramineous to pale brown, often minutely dotted reddish, without or rarely with darker submarginal band, narrowly ovate to lanceolate, 5–7.8 × 2–3 mm, thickly papery, membranous toward margins, apex narrowly rounded to acute. Flowers: perianth bristles 6–7, stramineous to reddish brown, proximally slightly flattened, subequal to equal, much exceeding to rarely shorter than achene, 3–5 mm, retrorsely spinulose; anthers yellow to reddish, 1.6–3.2 mm; styles 3-fid. Achenes stramineous or medium brown, biconvex or compressed trigonous, narrowly obpyriform, 1.9–2.6 × 1–1.4 mm, adaxial face with 15–22 rows of rectangular, transversely elongated or nearly isodiametric cells, clearly sculptured at 10–15X, apex usually conspicuously constricted to short neck 0.4–0.7 mm wide, usually wider at tubercle base. Tubercles stramineous to medium brown, high-pyramidal, 0.5–1.1 × 0.3–0.7 mm. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Mag. Hort. Bot. 7: 178 1841 to Mag. Hort. Bot. 7: 178 (1841),...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Mag. Hort. Bot. 7: 178 1841 to Mag. Hort. Bot. 7: 178 (1841), 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 robbinsii Oakes. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1680562 on 2025-09-13
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]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description Plants perennial; rhizomes (0.5–)1–2 mm thick, longer internodes 2–3 cm, scales 5–7 mm; tubers sometimes present, apical, ovoid, 4–8 × 3–4 mm. Culms acutely trigonous; spikelet-bearing culms 16–70 cm × 0.7–0.9 mm; when submersed plants often forming numerous, filiform, flaccid culms without spikelets, sometimes with whorls of slender branches, 0.1–0.3 mm wide; soft, sometimes septate-nodulose when aquatic, internally spongy, transverse septa incomplete. Leaves: distal leaf sheaths persistent or decaying, membranous, apex obtuse to acuminate. Spikelets sometimes proliferous (when submerged), 9–33 × 1.5–3 mm; rachilla joints bearing prominent winglike remnants of floral scales; proximal scale with a flower, amplexicaulous, (5–)6–9.8 mm; floral scales 4–18, 0.5–1 per mm of rachilla, stramineous to pale brown, often minutely dotted reddish, without or rarely with darker submarginal band, narrowly ovate to lanceolate, 5–7.8 × 2–3 mm, thickly papery, membranous toward margins, apex narrowly rounded to acute. Flowers: perianth bristles 6–7, stramineous to reddish brown, proximally slightly flattened, subequal to equal, much exceeding to rarely shorter than achene, 3–5 mm, retrorsely spinulose; anthers yellow to reddish, 1.6–3.2 mm; styles 3-fid. Achenes stramineous or medium brown, biconvex or compressed trigonous, narrowly obpyriform, 1.9–2.6 × 1–1.4 mm, adaxial face with 15–22 rows of rectangular, transversely elongated or nearly isodiametric cells, clearly sculptured at 10–15X, apex usually conspicuously constricted to short neck 0.4–0.7 mm wide, usually wider at tubercle base. Tubercles stramineous to medium brown, high-pyramidal, 0.5–1.1 × 0.3–0.7 mm. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Mag. Hort. Bot. 7: 178 1841 to Mag. Hort. Bot. 7: 178 (1841), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (36 publications)
To European Nucleotide Archive, ENA (Eleocharis robbinsii)
To GenBank (5 nucleotides; 4 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Trichophyllum robbinsii (Oakes) House)
To IUCN Red List (Least Concern)
To Plants of the World Online (from synonym Trichophyllum robbinsii (Oakes) House)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Eleocharis robbinsii K000881803 type 1)
To European Nucleotide Archive, ENA (Eleocharis robbinsii)
To GenBank (5 nucleotides; 4 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Trichophyllum robbinsii (Oakes) House)
To IUCN Red List (Least Concern)
To Plants of the World Online (from synonym Trichophyllum robbinsii (Oakes) House)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Eleocharis robbinsii K000881803 type 1)
From editor or global species database
Hosted externally
