Cyperaceae taxon details
Carex tristachya Thunb.
1676240 (urn:lsid:marinespecies.org:taxname:1676240)
accepted
Species
terrestrial
(1784). Flora Japonica. , available online at https://www.biodiversitylibrary.org/page/50709714#page/7/mode/1up
page(s): 38 [details]
page(s): 38 [details]
Description Rhizome short. Culms tufted, 20-45 cm tall, slender, obtusely trigonous, smooth. Basal sheath dark brown, split into...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syst. Veg. ed. 14 845 1784 to Syst. Veg. ed. 14 : 845 (1784),...
Description Rhizome short. Culms tufted, 20-45 cm tall, slender, obtusely trigonous, smooth. Basal sheath dark brown, split into fibers. Leaves shorter than or nearly equaling culm, blades 2-4(-5) mm wide, flat, margins scabrid. Involucral bracts leaflike, longer than subtending spikes, sheathed, sheath 6-12 mm. Spikes 4-6, upper ones contiguous and fastigiate, sometimes lowest one distant; terminal spike male, linear-cylindric, 10-40 × 1-1.5 mm, subsessile, male glumes free or connate from base to above middle, filament of stamen threadlike or flat, free or connate; lateral spikes cylindric, 10-30(-35) × 2-3 mm, densely flowered; upper peduncles short and enclosed in involucral bract sheath, lowest one exserted. 2.5-3.5(-5.5) cm, erect, slender. Female glumes pale yellow laterally, elliptic or oblong, ca. 2 mm, costa green, apex obtuse, truncate, or acute, mucronate. Utricles green, longer than glume, erect, ovate-fusiform, trigonous, 3-3.2 mm, membranous, puberulent, many veined, base attenuate and stipitate, apex attenuate into a beak, orifice minutely 2-toothed. Nutlet pale brown, tightly enveloped, ovate, 2-2.5 mm, apex discoid-annulate; style base conically thickened; stigmas 3. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syst. Veg. ed. 14 845 1784 to Syst. Veg. ed. 14 : 845 (1784),...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syst. Veg. ed. 14 845 1784 to Syst. Veg. ed. 14 : 845 (1784), 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. Carex tristachya Thunb.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1676240 on 2025-09-13
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2024-12-10 11:47:54Z
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Nomenclature
original description
(1784). Flora Japonica. , available online at https://www.biodiversitylibrary.org/page/50709714#page/7/mode/1up
page(s): 38 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 38 [details]
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
Syntype K 000960803, geounit Kyushu [details]
From editor or global species database
Additional information 2n= 38, 40, 41, 42, 43, 62, 64 [details]Description Rhizome short. Culms tufted, 20-45 cm tall, slender, obtusely trigonous, smooth. Basal sheath dark brown, split into fibers. Leaves shorter than or nearly equaling culm, blades 2-4(-5) mm wide, flat, margins scabrid. Involucral bracts leaflike, longer than subtending spikes, sheathed, sheath 6-12 mm. Spikes 4-6, upper ones contiguous and fastigiate, sometimes lowest one distant; terminal spike male, linear-cylindric, 10-40 × 1-1.5 mm, subsessile, male glumes free or connate from base to above middle, filament of stamen threadlike or flat, free or connate; lateral spikes cylindric, 10-30(-35) × 2-3 mm, densely flowered; upper peduncles short and enclosed in involucral bract sheath, lowest one exserted. 2.5-3.5(-5.5) cm, erect, slender. Female glumes pale yellow laterally, elliptic or oblong, ca. 2 mm, costa green, apex obtuse, truncate, or acute, mucronate. Utricles green, longer than glume, erect, ovate-fusiform, trigonous, 3-3.2 mm, membranous, puberulent, many veined, base attenuate and stipitate, apex attenuate into a beak, orifice minutely 2-toothed. Nutlet pale brown, tightly enveloped, ovate, 2-2.5 mm, apex discoid-annulate; style base conically thickened; stigmas 3. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Syst. Veg. ed. 14 845 1784 to Syst. Veg. ed. 14 : 845 (1784), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
| Language | Name | |
|---|---|---|
| Japanese | モエギスゲ（Moegi-suge） | [details] |
To Biodiversity Heritage Library (42 publications)
To European Nucleotide Archive, ENA (Carex tristachya)
To Genbank
To International Plant Names Index (IPNI)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Carex tristachya K000960803 type 1)
To European Nucleotide Archive, ENA (Carex tristachya)
To Genbank
To International Plant Names Index (IPNI)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Carex tristachya K000960803 type 1)
From editor or global species database
Hosted externally
