Cyperaceae taxon details
Carex rugata Ohwi
1677000 (urn:lsid:marinespecies.org:taxname:1677000)
accepted
Species
Carex tokuii J.Oda & Nagam. · unaccepted > heterotypic synonym
terrestrial
Ohwi, J. (1932). Symbolae ad Floram Asiae Orientalis IV. <em>Acta Phytotaxonomica et Geobotanica.</em> 1(1): 66-87.
page(s): 76 [details] Available for editors
[request]
page(s): 76 [details] Available for editors
[request]
Holotype , geounit Honshu
Holotype, geounit Honshu [details]
Description Rhizome short, often with stolons. Culms tufted, lateral, 8–40 cm tall, obtusely trigonous, somewhat slender, smooth,...
Description Rhizome short, with creeping stolons. Culms arising from axils of leaves, 20-50 cm tall, slender, obtusely trigonous,...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Acta Phytotax. Geobot. 1(1): 76. 1932 [20 Apr 1932] to Acta Phytotax....
Description Rhizome short, often with stolons. Culms tufted, lateral, 8–40 cm tall, obtusely trigonous, somewhat slender, smooth, with pale brown or gray-brown, slightly fibrous-split, persistent leaf sheaths at the base. Leaves nearly as long as or slightly shorter than culms; blades 2–4 mm wide, herbaceous, flat-spreading, margins scabrous. Bracts short-leafy or leafy, lower ones longer than the spikes, with sheaths 5–30 mm long. Spikes 4 or 5, upper ones close to each other; terminal spike male, narrowly cylindric or clavate-short-cylindric, 0.7–2 cm long, 1.5–2 mm wide, peduncle absent or very short; lateral spikes female, short-cylindric or cylindric, 0.5–3 cm long, 2–2.5 mm wide, flowers somewhat densely arranged, spike peduncles enclosed within bract sheaths, sometimes slightly exserted. Male glumes elliptic or narrowly ovate-elliptic, 3.5–4 mm long, yellowish white or pale yellow, apex obtuse or with a short tip, with 3 green midveins on the back. Female glumes broadly ovate or ovate, 2.5–3 mm long, yellowish white, apex with a short tip to a short awn, with a single green midvein on the back. Utricles fusiform-ellipsoid, obtusely trigonous, 2.5–3 mm long, longer than the female glumes, pale green, membranous, with numerous fine veins, glabrous, apex abruptly contracted into a 0.3–0.5 mm long beak, beak mouth with 2 small teeth. Nutlets tightly enclosed within the utricles, rhombic-ellipsoid, trigonous, 2–2.2 mm long, chestnut-brown, apex abruptly contracted into an annular disc, each face above and below concave, with a rib-like central depression, base with a short stipe; base of style slightly thickened; stigmas 3. [details]
Description Rhizome short, with creeping stolons. Culms arising from axils of leaves, 20-50 cm tall, slender, obtusely trigonous,...
Description Rhizome short, with creeping stolons. Culms arising from axils of leaves, 20-50 cm tall, slender, obtusely trigonous, smooth, clothed at base with fibrous remains of old basal leaf sheaths. Leaves slightly shorter than or nearly equaling culm, blades 2-4(-5) mm wide, flat, glabrous, margins scabrid. Involucral bracts with blades, longer than subtending spike, sheathed, sheath 0.5-2.5 cm. Spikes 4 or 5, upper spikes contiguous, lower ones spaced; terminal spike male, linear-cylindric, 10-20 × 1.5-2 mm, sessile or shortly pedunculate, surpassing next female spikelet; lateral spikes female, linear-cylindric, 15-28 × 2-2.5 mm, densely flowered, with peduncle enclosed in involucral bract sheath or shortly exserted. Female glumes yellow-white, oblong, 2.5-3 mm, with 1-veined green costa, apex cuneate, mucronate. Utricle pale green, longer than glume, rhombic-oblong, obtusely trigonous, ca. 3 mm, thinly membranous, glabrous, many veined, apex gradually attenuate into a conic beak, beak ca. 0.5 mm, minutely 2-toothed at orifice. Nutlet tightly enveloped, oblong, ca. 2 mm, with faces excavated both in upper and lower parts, not contracted at angles, base shortly stipitate, apex discoid-annulate; style base slightly thickened; stigmas 3. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Acta Phytotax. Geobot. 1(1): 76. 1932 [20 Apr 1932] to Acta Phytotax....
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Acta Phytotax. Geobot. 1(1): 76. 1932 [20 Apr 1932] to Acta Phytotax. Geobot. 1: 76 (1932), 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 rugata Ohwi. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1677000 on 2026-06-13
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Nomenclature
original description
Ohwi, J. (1932). Symbolae ad Floram Asiae Orientalis IV. <em>Acta Phytotaxonomica et Geobotanica.</em> 1(1): 66-87.
page(s): 76 [details] Available for editors [request]
original description (of Carex tokuii J.Oda & Nagam.) Oda, J.; Masaki, T.; Nagamasu, H. (2017). Carex tokuii (Sect. Mitratae, Cyperaceae), a New Species from Japan and Korea. <em>The Journal of Japanese Botany.</em> 92(3): 148-156.
page(s): 149 [details] Available for editors [request]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 76 [details] Available for editors
[request]original description (of Carex tokuii J.Oda & Nagam.) Oda, J.; Masaki, T.; Nagamasu, H. (2017). Carex tokuii (Sect. Mitratae, Cyperaceae), a New Species from Japan and Korea. <em>The Journal of Japanese Botany.</em> 92(3): 148-156.
page(s): 149 [details] Available for editors
[request]basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Taxonomy
taxonomy source
Jin, X. F., Lu, Y. F. (2024). Taxonomy of Carex sect. Mitratae s.l. (Cyperaceae). [details] Available for editors [request]
[request]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
From editor or global species database
Additional information 2n=78 [details]Description Rhizome short, often with stolons. Culms tufted, lateral, 8–40 cm tall, obtusely trigonous, somewhat slender, smooth, with pale brown or gray-brown, slightly fibrous-split, persistent leaf sheaths at the base. Leaves nearly as long as or slightly shorter than culms; blades 2–4 mm wide, herbaceous, flat-spreading, margins scabrous. Bracts short-leafy or leafy, lower ones longer than the spikes, with sheaths 5–30 mm long. Spikes 4 or 5, upper ones close to each other; terminal spike male, narrowly cylindric or clavate-short-cylindric, 0.7–2 cm long, 1.5–2 mm wide, peduncle absent or very short; lateral spikes female, short-cylindric or cylindric, 0.5–3 cm long, 2–2.5 mm wide, flowers somewhat densely arranged, spike peduncles enclosed within bract sheaths, sometimes slightly exserted. Male glumes elliptic or narrowly ovate-elliptic, 3.5–4 mm long, yellowish white or pale yellow, apex obtuse or with a short tip, with 3 green midveins on the back. Female glumes broadly ovate or ovate, 2.5–3 mm long, yellowish white, apex with a short tip to a short awn, with a single green midvein on the back. Utricles fusiform-ellipsoid, obtusely trigonous, 2.5–3 mm long, longer than the female glumes, pale green, membranous, with numerous fine veins, glabrous, apex abruptly contracted into a 0.3–0.5 mm long beak, beak mouth with 2 small teeth. Nutlets tightly enclosed within the utricles, rhombic-ellipsoid, trigonous, 2–2.2 mm long, chestnut-brown, apex abruptly contracted into an annular disc, each face above and below concave, with a rib-like central depression, base with a short stipe; base of style slightly thickened; stigmas 3. [details]
Description Rhizome short, with creeping stolons. Culms arising from axils of leaves, 20-50 cm tall, slender, obtusely trigonous, smooth, clothed at base with fibrous remains of old basal leaf sheaths. Leaves slightly shorter than or nearly equaling culm, blades 2-4(-5) mm wide, flat, glabrous, margins scabrid. Involucral bracts with blades, longer than subtending spike, sheathed, sheath 0.5-2.5 cm. Spikes 4 or 5, upper spikes contiguous, lower ones spaced; terminal spike male, linear-cylindric, 10-20 × 1.5-2 mm, sessile or shortly pedunculate, surpassing next female spikelet; lateral spikes female, linear-cylindric, 15-28 × 2-2.5 mm, densely flowered, with peduncle enclosed in involucral bract sheath or shortly exserted. Female glumes yellow-white, oblong, 2.5-3 mm, with 1-veined green costa, apex cuneate, mucronate. Utricle pale green, longer than glume, rhombic-oblong, obtusely trigonous, ca. 3 mm, thinly membranous, glabrous, many veined, apex gradually attenuate into a conic beak, beak ca. 0.5 mm, minutely 2-toothed at orifice. Nutlet tightly enveloped, oblong, ca. 2 mm, with faces excavated both in upper and lower parts, not contracted at angles, base shortly stipitate, apex discoid-annulate; style base slightly thickened; stigmas 3. [details]
Habitat Growing in forests along streams, forest margins and roadsides, moist shady grasslands, shrubberies on mountaintops, stream banks and rock crevices on slopes, at 50–2000 m alt. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Acta Phytotax. Geobot. 1(1): 76. 1932 [20 Apr 1932] to Acta Phytotax. Geobot. 1: 76 (1932), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
| Language | Name | |
|---|---|---|
| Japanese | クサスゲ（Kusa-suge） | [details] |
To Biodiversity Heritage Library (4 publications)
To Field Museum Herbarium (Carex rugata Ohwi F1463953 possible type 1)
To International Plant Names Index (IPNI) (from synonym Carex tokuii J.Oda & Nagam.)
To International Plant Names Index (IPNI)
To Photos of Cyperaceae by Hoshino Labo. from Japan
To Plants of the World Online (from synonym Carex tokuii J.Oda & Nagam.)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Carex rugata K000960995 type 1)
To Field Museum Herbarium (Carex rugata Ohwi F1463953 possible type 1)
To International Plant Names Index (IPNI) (from synonym Carex tokuii J.Oda & Nagam.)
To International Plant Names Index (IPNI)
To Photos of Cyperaceae by Hoshino Labo. from Japan
To Plants of the World Online (from synonym Carex tokuii J.Oda & Nagam.)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Carex rugata K000960995 type 1)
From editor or global species database
Hosted externally
Hosted externally
