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Cyperaceae taxon details

Cyperus tenuis Sw.

To New York Botanical Garden Steere Herbarium (Cyperus_dussii_NY11738_type_1)
To New York Botanical Garden Steere Herbarium (Cyperus_dussii_NY11738_type_1)

1680906 (urn:lsid:marinespecies.org:taxname:1680906)

  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. Cyperoideae (Subfamily)
  12. Cypereae (Tribe)
  13. Cyperinae (Subtribe)
  14. Cyperus (Genus)
  15. Cyperus tenuis (Species)
accepted
Species

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terrestrial
Not documented
Description Caespitose perennial, (4–) 10–50 cm tall. Rhizomes 3–15 mm long, 1–2.5 mm in diameter, indurate, horizontal. Culms...  
Description Caespitose perennial, (4–) 10–50 cm tall. Rhizomes 3–15 mm long, 1–2.5 mm in diameter, indurate, horizontal. Culms (0.7–) 1.2–1.6 (–2.0) mm in diameter, trigonous, smooth. Leaves 3–6, 5–45 cm long, (1–) 2–3 mm wide, v-shaped, margins and keel scabrellate. Inflorescence bracts (4–) 5–9, 3–25 cm long, (1–) 2–3 mm wide, v-shaped, margins and keel scabrellate, horizontal to ascendent at 45°. Rays (2–) 5–12 (–14), 1.5–9 (–12) cm long, smooth; secondary rays absent. Spikes (10–) 15–25 (–35) mm long, (8–) 10–25 mm wide, loosely ovoid to ovoid-cylindric; rachis (4–) 8–12 (–23) mm long. Spikelets (10–) 30–70, 5–22 mm long, 0.7–1.1 mm wide, linear, compressed-quadrate; rachilla deciduous, ca. 0.4 mm wide, 0.1–0.2 mm thick, flexuous, greenish, successive scales 1.8–2.6 (–3.3) mm apart, wings 0.3–0.5 mm wide, hyaline. Scales persistent, (2–) 4–9 (–20), 2.4–3.4 mm long, (1–) 1.3–1.8 mm wide, oblong-elliptic, apex broadly rounded, mucronulate, overlapping lower ¼–⅓ of next scale, laterally 3–5-nerved, greenish white, often streaked with red, medially 3-nerved, green. Stamens 3; filaments 2.0–3.4 mm long; anthers 0.3–0.5 mm long, ellipsoid to oblong-ellipsoid, connective apex not prolonged. Style 0.4–1.0 mm long; stigmas 3, 1.0–3.0 mm long. Achenes (1.4–) 1.6–1.8 (–2.0) mm long, 0.4–0.5 mm wide, trigonous, linear to narrowly oblong, apex subacute, apiculate, base stipitate 0.1–0.2 mm long, faces concave to barely convex, surface punctate, brown to reddish brown. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Prodr. Veg. Ind. Occ. 20 1788 to Prodr. Veg. Ind. Occ. : 20 (1788),...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Prodr. Veg. Ind. Occ. 20 1788 to Prodr. Veg. Ind. Occ. : 20 (1788), 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. Cyperus tenuis Sw.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1680906 on 2026-09-09
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 Caespitose perennial, (4–) 10–50 cm tall. Rhizomes 3–15 mm long, 1–2.5 mm in diameter, indurate, horizontal. Culms (0.7–) 1.2–1.6 (–2.0) mm in diameter, trigonous, smooth. Leaves 3–6, 5–45 cm long, (1–) 2–3 mm wide, v-shaped, margins and keel scabrellate. Inflorescence bracts (4–) 5–9, 3–25 cm long, (1–) 2–3 mm wide, v-shaped, margins and keel scabrellate, horizontal to ascendent at 45°. Rays (2–) 5–12 (–14), 1.5–9 (–12) cm long, smooth; secondary rays absent. Spikes (10–) 15–25 (–35) mm long, (8–) 10–25 mm wide, loosely ovoid to ovoid-cylindric; rachis (4–) 8–12 (–23) mm long. Spikelets (10–) 30–70, 5–22 mm long, 0.7–1.1 mm wide, linear, compressed-quadrate; rachilla deciduous, ca. 0.4 mm wide, 0.1–0.2 mm thick, flexuous, greenish, successive scales 1.8–2.6 (–3.3) mm apart, wings 0.3–0.5 mm wide, hyaline. Scales persistent, (2–) 4–9 (–20), 2.4–3.4 mm long, (1–) 1.3–1.8 mm wide, oblong-elliptic, apex broadly rounded, mucronulate, overlapping lower ¼–⅓ of next scale, laterally 3–5-nerved, greenish white, often streaked with red, medially 3-nerved, green. Stamens 3; filaments 2.0–3.4 mm long; anthers 0.3–0.5 mm long, ellipsoid to oblong-ellipsoid, connective apex not prolonged. Style 0.4–1.0 mm long; stigmas 3, 1.0–3.0 mm long. Achenes (1.4–) 1.6–1.8 (–2.0) mm long, 0.4–0.5 mm wide, trigonous, linear to narrowly oblong, apex subacute, apiculate, base stipitate 0.1–0.2 mm long, faces concave to barely convex, surface punctate, brown to reddish brown. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Prodr. Veg. Ind. Occ. 20 1788 to Prodr. Veg. Ind. Occ. : 20 (1788), 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 (17 publications) (from synonym Mariscus tenuis (Sw.) Nelmes)
To Biodiversity Heritage Library (18 publications) (from synonym Cyperus platystachyus Griseb.)
To Biodiversity Heritage Library (2 publications) (from synonym Mariscus aximensis C.B.Clarke)
To Biodiversity Heritage Library (2 publications) (from synonym Cyperus dussii Boeckeler)
To Biodiversity Heritage Library (26 publications) (from synonym Cyperus caracasanus Kunth)
To Biodiversity Heritage Library (3 publications) (from synonym Mariscus eurystachys (Ridl.) C.B.Clarke)
To Biodiversity Heritage Library (4 publications) (from synonym Cyperus discigerus Liebm.)
To Biodiversity Heritage Library (40 publications) (from synonym Mariscus flabelliformis Kunth)
To Biodiversity Heritage Library (5 publications) (from synonym Cyperus breviradiatus Liebm.)
To Biodiversity Heritage Library (5 publications) (from synonym Cyperus flexibilis Maury)
To Biodiversity Heritage Library (6 publications) (from synonym Cyperus eurystachys Ridl.)
To Biodiversity Heritage Library (6 publications) (from synonym Cyperus hartii Boeckeler)
To Biodiversity Heritage Library (78 publications) (from synonym Cyperus flabelliformis (Kunth) Spreng.)
To Biodiversity Heritage Library (8 publications) (from synonym Mariscus luridus T.Durand & De Wild.)
To Biodiversity Heritage Library (85 publications) 
To European Nucleotide Archive, ENA (Cyperus tenuis) 
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Cyperus breviradiatus Liebm.)
To International Plant Names Index (IPNI) (from synonym Cyperus caracasanus Kunth)
To International Plant Names Index (IPNI) (from synonym Cyperus eurystachys Ridl.)
To International Plant Names Index (IPNI) (from synonym Cyperus flabelliformis (Kunth) Spreng.)
To International Plant Names Index (IPNI) (from synonym Cyperus dussianus Duss)
To International Plant Names Index (IPNI) (from synonym Cyperus discigerus Liebm.)
To International Plant Names Index (IPNI) (from synonym Cyperus dussii Boeckeler)
To International Plant Names Index (IPNI) (from synonym Cyperus camphoratus var. breviradiatus (Liebm.) Kük.)
To International Plant Names Index (IPNI) (from synonym Cyperus sertularinus var. discigerus (Liebm.) Kük.)
To International Plant Names Index (IPNI) (from synonym Cyperus tenuis var. aximensis (C.B.Clarke) Kük.)
To International Plant Names Index (IPNI) (from synonym Mariscus tenuis (Sw.) Nelmes)
To International Plant Names Index (IPNI) (from synonym Mariscus luridus T.Durand & De Wild.)
To International Plant Names Index (IPNI) (from synonym Cyperus flexibilis Maury)
To International Plant Names Index (IPNI) (from synonym Cyperus hartii Boeckeler)
To International Plant Names Index (IPNI) (from synonym Cyperus platystachyus Griseb.)
To International Plant Names Index (IPNI) (from synonym Mariscus aximensis C.B.Clarke)
To International Plant Names Index (IPNI) (from synonym Mariscus eurystachys (Ridl.) C.B.Clarke)
To International Plant Names Index (IPNI) (from synonym Mariscus flabelliformis Kunth)
To International Plant Names Index (IPNI) (from synonym Mariscus dicigerus (Liebm.) T.Koyama)
To International Plant Names Index (IPNI) (from synonym Cyperus tenuis var. brevior Kük.)
To International Plant Names Index (IPNI) (from synonym Cyperus tenuis var. eurystachys (Ridl.) Kük.)
To International Plant Names Index (IPNI) (from synonym Cyperus tenuis var. fulvescens Kük.)
To International Plant Names Index (IPNI) (from synonym Cyperus tenuis var. grandiceps Kük.)
To International Plant Names Index (IPNI) (from synonym Cyperus tenuis var. luridus (T.Durand & De Wild.) Kük.)
To International Plant Names Index (IPNI) (from synonym Mariscus flabelliformis var. aximensis (C.B.Clarke) S.S.Hooper)
To IUCN Red List (Least Concern) 
To New York Botanical Garden Steere Herbarium (Cyperus_dussii_NY11738_type_1) (from synonym Cyperus dussii Boeckeler)
To New York Botanical Garden Steere Herbarium (Cyperus_dussii_NY11742_type_1) (from synonym Cyperus dussii Boeckeler)
To Plants of the World Online (from synonym Cyperus eurystachys Ridl.)
To Plants of the World Online (from synonym Cyperus dussii Boeckeler)
To Plants of the World Online (from synonym Cyperus flabelliformis (Kunth) Spreng.)
To Plants of the World Online (from synonym Cyperus flexibilis Maury)
To Plants of the World Online (from synonym Cyperus hartii Boeckeler)
To Plants of the World Online 
To Plants of the World Online (from synonym Cyperus breviradiatus Liebm.)
To Plants of the World Online (from synonym Cyperus caracasanus Kunth)
To Plants of the World Online (from synonym Cyperus dussianus Duss)
To Plants of the World Online (from synonym Cyperus discigerus Liebm.)
To Plants of the World Online (from synonym Mariscus eurystachys (Ridl.) C.B.Clarke)
To Plants of the World Online (from synonym Mariscus dicigerus (Liebm.) T.Koyama)
To Plants of the World Online (from synonym Mariscus flabelliformis Kunth)
To Plants of the World Online (from synonym Mariscus aximensis C.B.Clarke)
To Plants of the World Online (from synonym Cyperus platystachyus Griseb.)
To Plants of the World Online (from synonym Mariscus luridus T.Durand & De Wild.)
To Plants of the World Online (from synonym Mariscus tenuis (Sw.) Nelmes)
To Plants of the World Online (from synonym Cyperus tenuis var. brevior Kük.)
To Plants of the World Online (from synonym Cyperus tenuis var. aximensis (C.B.Clarke) Kük.)
To Plants of the World Online (from synonym Cyperus sertularinus var. discigerus (Liebm.) Kük.)
To Plants of the World Online (from synonym Cyperus camphoratus var. breviradiatus (Liebm.) Kük.)
To Plants of the World Online (from synonym Mariscus tenuis var. fulvescens (Kük.) Nelmes)
To Plants of the World Online (from synonym Mariscus flabelliformis var. aximensis (C.B.Clarke) S.S.Hooper)
To Plants of the World Online (from synonym Cyperus tenuis var. eurystachys (Ridl.) Kük.)
To Plants of the World Online (from synonym Cyperus tenuis var. luridus (T.Durand & De Wild.) Kük.)
To Plants of the World Online (from synonym Cyperus tenuis var. grandiceps Kük.)
To Plants of the World Online (from synonym Cyperus tenuis var. fulvescens Kük.)
To Royal Botanic Gardens, Kew (Cyperus tenuis K000321333 type 1) 
To the Natural History Museum, London (Mariscus flabelliformis Kunth BM000922486 type 1) (from synonym Mariscus flabelliformis Kunth)
To the Natural History Museum, London (Mariscus tenuis (Sw.) Nelmes BM000938338 type 1) (from synonym Mariscus tenuis (Sw.) Nelmes)
To The Plant List (from synonym Cyperus disciger Liebm.)
To US Herbarium (Cyperus tenuis brevior US85928 type 1) (from synonym Cyperus tenuis var. brevior Kük.)
To US Herbarium (Cyperus tenuis grandiceps US533017 type 1) (from synonym Cyperus tenuis var. grandiceps Kük.)
From editor or global species database
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