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Cyperaceae taxon details

Eleocharis tuberculosa (Michx.) Roem. & Schult.

To New York Botanical Garden Steere Herbarium (Eleocharis_tuberculosa_NY51070_type_1)
To New York Botanical Garden Steere Herbarium (Eleocharis_tuberculosa_NY51070_type_1)

1680602  (urn:lsid:marinespecies.org:taxname:1680602)

  1. Biota
  2. Plantae (Kingdom)
  3. Viridiplantae (Subkingdom)
  4. Streptophyta (Infrakingdom)
  5. Tracheophyta (Phylum (Division))
  6. Spermatophytina (Subphylum (Subdivision))
  7. Magnoliopsida (Class)
  8. Lilianae (Superorder)
  9. Poales (Order)
  10. Cyperaceae (Family)
  11. Eleocharideae (Tribe)
  12. Eleocharis (Genus)
  13. Eleocharis tuberculosa (Species)
accepted
Species

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terrestrial
Not documented
Description Plants perennial, forming dense clumps, not stoloniferous. Rhizomes present or not, caudexlike, ascending, 1 mm thick;...  
Description Plants perennial, forming dense clumps, not stoloniferous. Rhizomes present or not, caudexlike, ascending, 1 mm thick; internodes and scales hidden by crowded culms, not evident. Culms elliptic or sometimes circular, with several rounded ridges and sulcate when dry, 15–75 cm × 0.3(–1.5) mm, firm, minutely granular at 10X. Leaves: distal leaf sheaths persistent; stramineous to green, often minutely red-spotted, papery to membranous, apex subacute to narrowly acute, often with tooth-like callus. Spikelets: basal spikelets absent; never proliferous, ovoid, terete, 5–15 × 2.5–4 mm, apex acute; proximal scale empty, deciduous, clasping 1/2 of culm, similar to floral scales; subproximal scale often empty; floral scales spiraled, 10–30, 5–6 per mm of rachilla, pale orange-brown, midribs green, broadly ovate, 2.5–4 × 1.5–2.5 mm, central area and often flanks papery to cartilaginous (or membranous), midrib evident, apex broadly rounded to obtuse. Flowers: perianth bristles 5–6, bright brown, stout, slightly shorter than to equaling tubercle; spinules rarely absent, dense, variably from divaricate to antrorse, very short, and blunt to acute, to often much longer and retrorse, sharply acute; stamens 2–3; anthers 0.5–1 mm; styles 3-fid. Achenes medium brown, obovoid to obpyriform, compressed (often obscurely) trigonous, angles evident, 0.9–1.7 × 0.8–2 mm; apex often constricted proximal to tubercle, very coarsely cancellate at 10X, each face with 8–10 longitudinal rows of large depressions. Tubercles bone-white to pale orange-brown, often red-spotted, subpyramidal, cross section plano-convex, 0.9–1.7(–2.4) × 0.7–1.2–2(–2.2) mm, at least as high and wide as achene, spongy, apex rounded, often with an abaxial acute projection. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syst. Veg., ed. 15 bis [Roemer & Schultes] 2: 152. 1817 [Nov 1817] to...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syst. Veg., ed. 15 bis [Roemer & Schultes] 2: 152. 1817 [Nov 1817] to Syst. Veg., ed. 15 bis 2: 152 (1817), 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 tuberculosa (Michx.) Roem. & Schult.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1680602 on 2025-09-12
Date
action
by
2023-09-06 07:35:01Z
created
Larridon, Isabel
2024-12-10 11:47:54Z
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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, forming dense clumps, not stoloniferous. Rhizomes present or not, caudexlike, ascending, 1 mm thick; internodes and scales hidden by crowded culms, not evident. Culms elliptic or sometimes circular, with several rounded ridges and sulcate when dry, 15–75 cm × 0.3(–1.5) mm, firm, minutely granular at 10X. Leaves: distal leaf sheaths persistent; stramineous to green, often minutely red-spotted, papery to membranous, apex subacute to narrowly acute, often with tooth-like callus. Spikelets: basal spikelets absent; never proliferous, ovoid, terete, 5–15 × 2.5–4 mm, apex acute; proximal scale empty, deciduous, clasping 1/2 of culm, similar to floral scales; subproximal scale often empty; floral scales spiraled, 10–30, 5–6 per mm of rachilla, pale orange-brown, midribs green, broadly ovate, 2.5–4 × 1.5–2.5 mm, central area and often flanks papery to cartilaginous (or membranous), midrib evident, apex broadly rounded to obtuse. Flowers: perianth bristles 5–6, bright brown, stout, slightly shorter than to equaling tubercle; spinules rarely absent, dense, variably from divaricate to antrorse, very short, and blunt to acute, to often much longer and retrorse, sharply acute; stamens 2–3; anthers 0.5–1 mm; styles 3-fid. Achenes medium brown, obovoid to obpyriform, compressed (often obscurely) trigonous, angles evident, 0.9–1.7 × 0.8–2 mm; apex often constricted proximal to tubercle, very coarsely cancellate at 10X, each face with 8–10 longitudinal rows of large depressions. Tubercles bone-white to pale orange-brown, often red-spotted, subpyramidal, cross section plano-convex, 0.9–1.7(–2.4) × 0.7–1.2–2(–2.2) mm, at least as high and wide as achene, spongy, apex rounded, often with an abaxial acute projection. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syst. Veg., ed. 15 bis [Roemer & Schultes] 2: 152. 1817 [Nov 1817] to Syst. Veg., ed. 15 bis 2: 152 (1817), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
    Definitions

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To Biodiversity Heritage Library (1 publication) (from synonym Trichophyllum tuberculosum (Michx.) House)
To Biodiversity Heritage Library (155 publications) 
To Biodiversity Heritage Library (2 publications) (from synonym Chlorocharis tuberculosa (Michx.) Rikli)
To Biodiversity Heritage Library (53 publications) (from synonym Scirpus tuberculosus Michx.)
To Biodiversity Heritage Library (9 publications) (from synonym Scirpus tuberculatus Elliott)
To Biodiversity Heritage Library (9 publications) (from synonym Rhynchospora monostachya Steud.)
To European Nucleotide Archive, ENA (Eleocharis tuberculosa) 
To GenBank (15 nucleotides; 10 proteins) 
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Bulbostylis tuberculosa (Michx.) Steven)
To International Plant Names Index (IPNI) (from synonym Megadenus tuberculatus (Elliott) Raf.)
To International Plant Names Index (IPNI) (from synonym Chlorocharis tuberculosa (Michx.) Rikli)
To International Plant Names Index (IPNI) (from synonym Rhynchospora monostachya Steud.)
To International Plant Names Index (IPNI) (from synonym Scirpus tuberculatus Elliott)
To International Plant Names Index (IPNI) (from synonym Scirpus tuberculosus Michx.)
To International Plant Names Index (IPNI) (from synonym Trichophyllum tuberculosum (Michx.) House)
To International Plant Names Index (IPNI) (from synonym Eleocharis tuberculosa f. pubnicoensis (Fernald) Svenson)
To International Plant Names Index (IPNI) (from synonym Eleocharis tuberculosa var. pubnicoensis Fernald)
To International Plant Names Index (IPNI) (from synonym Eleocharis tuberculosa f. retrorsa Svenson)
To New York Botanical Garden Steere Herbarium (Eleocharis_tuberculosa_NY51070_type_1) (from synonym Eleocharis tuberculosa var. pubnicoensis Fernald)
To New York Botanical Garden Steere Herbarium (Eleocharis_tuberculosa_NY51083_type_1) (from synonym Eleocharis tuberculosa var. pubnicoensis Fernald)
To Plants of the World Online (from synonym Eleocharis tuberculosa f. retrorsa Svenson)
To Plants of the World Online (from synonym Eleocharis tuberculosa var. pubnicoensis Fernald)
To Plants of the World Online (from synonym Trichophyllum tuberculosum (Michx.) House)
To Plants of the World Online (from synonym Scirpus tuberculosus Michx.)
To Plants of the World Online (from synonym Bulbostylis tuberculosa (Michx.) Steven)
To Plants of the World Online (from synonym Megadenus tuberculatus (Elliott) Raf.)
To Plants of the World Online (from synonym Rhynchospora monostachya Steud.)
To Plants of the World Online (from synonym Scirpus tuberculatus Elliott)
To Plants of the World Online (from synonym Chlorocharis tuberculosa (Michx.) Rikli)
To Plants of the World Online 
To Plants of the World Online (from synonym Eleocharis tuberculosa f. pubnicoensis (Fernald) Svenson)
To the Natural History Museum, London (Eleocharis tuberculosa (Michx.) Roem. & Schult. BM001042136 type 1) 
To The Plant List (from synonym Eleocharis tuberculosa var. tuberculosa (Michx.) Roem. & Schult.)
To The Plant List (from synonym Eleocharis tuberculosa f. tuberculosa (Michx.) Roem. & Schult.)
To US Herbarium (Eleocharis tuberculosa retrorsa US1100354 type 1) (from synonym Eleocharis tuberculosa f. retrorsa Svenson)
From editor or global species database
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