Cyperaceae taxon details
Eleocharis obtusetrigona (Lindl. & Nees) Steud.
1680516 (urn:lsid:marinespecies.org:taxname:1680516)
accepted
Species
Eleocharis strobilacea Pedersen · unaccepted
Limnochloa obtusitrigona Lindl. & Nees · unaccepted
terrestrial
Not documented
Description Plants perennial; rhizomes 3–4 mm thick, soft to hard, longer internodes 3–8 cm, scales more than 1 cm, tubers absent....
Taxonomic remark Source in seed data: ipni Nomenclatural status in seed: New name from IPNI, information provided by Alan E. on email Nov....
Description Plants perennial; rhizomes 3–4 mm thick, soft to hard, longer internodes 3–8 cm, scales more than 1 cm, tubers absent. Culms obscurely 3–5-angled to terete, 40–110 cm × (2–)3.6–7.5 mm, soft, not septate-nodulose, internally spongy, transverse septa incomplete; plants never forming filiform, flaccid culms. Leaves: distal leaf sheaths persistent, membranous, apex acute to long-acuminate, sometimes prolonged into a slender bladelike portion to 6 cm. Spikelets not proliferous, 12–43 × 3.5–6 mm; rachilla joints bearing obscure winglike remnants of floral scales; proximal scale without a flower, amplexicaulous, 3.6–7.5 mm; floral scales 30–125, 1–3 per mm of rachilla, greenish to pale brown, often with pale to dark brown submarginal band or a subapical darker spot, ovate to oblong, 4.3–5.8 × 2.5–3.3 mm, cartilaginous, often membranous toward margins, margins broadly translucent, membranous, apex rounded to acute. Flowers: perianth bristles 6–7, stramineous, margins and spinules reddish to pale brown, stout, flattened, subequal, exceeding achene, 2.5–3.2 mm, coarsely retrorsely spinulose; anthers reddish brown, 1.5–1.9 mm; styles 3-fid or sometimes 2-fid. Achenes pale brown, biconvex, obpyriform, 1.7–2.3 × 1.2–1.5 mm, clearly sculptured at 10–15X, each face with 10–15 rows of transversely elongated cells, often isodiametric at achene base, apex usually constricted to neck 0.5–0.6 mm wide. Tubercles stramineous, lamelliform to high-pyramidal, 0.8–1.1 × 0.7–0.9 mm. [details]
Taxonomic remark Source in seed data: ipni Nomenclatural status in seed: New name from IPNI, information provided by Alan E. on email Nov....
Taxonomic remark Source in seed data: ipni Nomenclatural status in seed: New name from IPNI, information provided by Alan E. on email Nov. 05 2020 [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Eleocharis obtusetrigona (Lindl. & Nees) Steud.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1680516 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]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description Plants perennial; rhizomes 3–4 mm thick, soft to hard, longer internodes 3–8 cm, scales more than 1 cm, tubers absent. Culms obscurely 3–5-angled to terete, 40–110 cm × (2–)3.6–7.5 mm, soft, not septate-nodulose, internally spongy, transverse septa incomplete; plants never forming filiform, flaccid culms. Leaves: distal leaf sheaths persistent, membranous, apex acute to long-acuminate, sometimes prolonged into a slender bladelike portion to 6 cm. Spikelets not proliferous, 12–43 × 3.5–6 mm; rachilla joints bearing obscure winglike remnants of floral scales; proximal scale without a flower, amplexicaulous, 3.6–7.5 mm; floral scales 30–125, 1–3 per mm of rachilla, greenish to pale brown, often with pale to dark brown submarginal band or a subapical darker spot, ovate to oblong, 4.3–5.8 × 2.5–3.3 mm, cartilaginous, often membranous toward margins, margins broadly translucent, membranous, apex rounded to acute. Flowers: perianth bristles 6–7, stramineous, margins and spinules reddish to pale brown, stout, flattened, subequal, exceeding achene, 2.5–3.2 mm, coarsely retrorsely spinulose; anthers reddish brown, 1.5–1.9 mm; styles 3-fid or sometimes 2-fid. Achenes pale brown, biconvex, obpyriform, 1.7–2.3 × 1.2–1.5 mm, clearly sculptured at 10–15X, each face with 10–15 rows of transversely elongated cells, often isodiametric at achene base, apex usually constricted to neck 0.5–0.6 mm wide. Tubercles stramineous, lamelliform to high-pyramidal, 0.8–1.1 × 0.7–0.9 mm. [details]Taxonomic remark Source in seed data: ipni Nomenclatural status in seed: New name from IPNI, information provided by Alan E. on email Nov. 05 2020 [details]
To Biodiversity Heritage Library (4 publications) (from synonym Eleocharis strobilacea Pedersen)
To Biodiversity Heritage Library (8 publications)
To International Plant Names Index (IPNI) (from synonym Eleocharis strobilacea Pedersen)
To International Plant Names Index (IPNI) (from synonym Limnochloa obtusitrigona Lindl. & Nees)
To International Plant Names Index (IPNI) (from synonym Eleocharis fistulosa var. obtusetrigona (Lindl. & Nees) M.Barros)
To International Plant Names Index (IPNI) (from synonym Eleocharis mutata var. obtusitrigona (Lindl. & Nees) C.B.Clarke)
To Plants of the World Online (from synonym Eleocharis mutata var. obtusitrigona (Lindl. & Nees) C.B.Clarke)
To Plants of the World Online
To Plants of the World Online (from synonym Eleocharis fistulosa var. obtusetrigona (Lindl. & Nees) M.Barros)
To Plants of the World Online (from synonym Limnochloa obtusitrigona Lindl. & Nees)
To Plants of the World Online (from synonym Eleocharis strobilacea Pedersen)
To Royal Botanic Garden Edinburgh Herbarium (Limnochloa obtusitrigona E00195580 isotype 1) (from synonym Limnochloa obtusitrigona Lindl. & Nees)
To US Herbarium (Eleocharis strobilacea US2122643 type 1) (from synonym Eleocharis strobilacea Pedersen)
To Biodiversity Heritage Library (8 publications)
To International Plant Names Index (IPNI) (from synonym Eleocharis strobilacea Pedersen)
To International Plant Names Index (IPNI) (from synonym Limnochloa obtusitrigona Lindl. & Nees)
To International Plant Names Index (IPNI) (from synonym Eleocharis fistulosa var. obtusetrigona (Lindl. & Nees) M.Barros)
To International Plant Names Index (IPNI) (from synonym Eleocharis mutata var. obtusitrigona (Lindl. & Nees) C.B.Clarke)
To Plants of the World Online (from synonym Eleocharis mutata var. obtusitrigona (Lindl. & Nees) C.B.Clarke)
To Plants of the World Online
To Plants of the World Online (from synonym Eleocharis fistulosa var. obtusetrigona (Lindl. & Nees) M.Barros)
To Plants of the World Online (from synonym Limnochloa obtusitrigona Lindl. & Nees)
To Plants of the World Online (from synonym Eleocharis strobilacea Pedersen)
To Royal Botanic Garden Edinburgh Herbarium (Limnochloa obtusitrigona E00195580 isotype 1) (from synonym Limnochloa obtusitrigona Lindl. & Nees)
To US Herbarium (Eleocharis strobilacea US2122643 type 1) (from synonym Eleocharis strobilacea Pedersen)
