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Cyperaceae taxon details

Carex truncatigluma C.B.Clarke

1677283 (urn:lsid:marinespecies.org:taxname:1677283)

accepted
Species
terrestrial
Clarke, C. B. (1903). Cyperaceae. In: Forbes, F. & Hemsley, W. B. An enumeration of all the plants known from China proper, Fornosa, Hainan, Corea, the Luchu Archipelago and the Island of Hongkong, together with their distribution and synonymy. <em>Journal of the Linnean Society. Botany.</em> 36: 202-319., available online at https://www.biodiversitylibrary.org/page/178059#page/222/mode/1up
page(s): 315 [details] 
Holotype  K 000960799, geounit Zhejiang  
Holotype K 000960799, geounit Zhejiang [details]
Description Rhizome short; culms lateral or subcentral, 10–40 cm tall, slender, trigonous, smooth or slightly scabrous above, with...  
Description Rhizome short; culms lateral or subcentral, 10–40 cm tall, slender, trigonous, smooth or slightly scabrous above, with persistent brown or dark brown basal sheaths splitting into fibers; leaves shorter or longer than the culm, leaf blades 2–5 mm wide, flat, upper margins scabrous; bracts leaflike or short-leaflike, much longer than the spikes, bract sheaths 5–15 mm long; spikes 3–5, distant or somewhat close; terminal spike male, clavate-cylindrical or shortly cylindrical, 1–3 cm long, ca. 1.5–2 mm wide; lateral spikes female, cylindrical or narrowly ovoid, 0.8–2.5 cm long, 4–6 mm wide, densely or moderately flowered, peduncles short, peduncle of the lowermost spike slightly exserted or enclosed within the bract sheath; male glumes narrowly oblong or narrowly obovate, 2.5–4 mm long, yellowish-brown or brown, apex acute or obtuse; female glumes narrowly obovate or narrowly elliptic, 2.5–3.5 mm long, yellowish-white or yellowish-brown, apex acute or short-awned, dorsal surface with 3–5 green veins; perigynia ovoid or broadly ovoid, obtusely trigonous, 3–4.5 mm long, slightly longer than the female glumes, yellowish-brown or light brown, membranous, glabrous or sparsely sericeous, base narrowed, apex contracted into a short cylindrical or short necklike beak 0.2–0.6 mm long, beak orifice slightly concave or shallowly 2-toothed; achenes tightly enclosed, obovoid or broadly obovoid, trigonous, 1.7–2.7 mm long, chestnut-brown or brown, apex contracted into a short cylindrical beak 0.2–0.4 mm long, upper and lower faces slightly concave below the angles, style base slightly thickened, stigmas 3. [details]

Description Rhizome obliquely ascending, covered with dark brown fibrous remains of old leaf sheath. Flowering culms arising from axils...  
Description Rhizome obliquely ascending, covered with dark brown fibrous remains of old leaf sheath. Flowering culms arising from axils of leaves, 10-30 cm tall, trigonous, slender, slightly scabrid. Leaves equaling to longer than culm, blade 3-10 mm wide, flat, scabrid on both surfaces, herbaceous. Involucral bracts shortly bladed, sheathed, sheath 6-9 mm. Spikes 4-6; terminal spike male, narrowly cylindric, 1-1.5 cm, ca. 1 mm thick, sessile or with peduncle 0.5-2 cm; lateral spikes female, cylindric, 20-50 × 2.5-3 mm, loosely flowered, uppermost female spike surpassing male spike, with peduncle enclosed in involucral bract sheath, lower female spikes spaced, with exserted peduncles, lowest peduncle 2-4(-6) cm. Female glumes dark yellow, broadly obovate, margins broadly hyaline, green costa projecting into a mucro 0.1-0.3 mm, apex truncate to rounded, often emarginate. Utricles olive-green, longer than glume, fusiform, obscurely trigonous, 3-6 × ca. 1 mm, membranous, minutely pubescent, many veined, base cuneate, stipitate, apex attenuate into a beak, orifice 2-toothed. Nutlet pale brown, tightly enveloped, fusiform, trigonous, 2.5-3 mm, with faces excavated both at upper and lower parts, base stipitate, stipe 0.2-0.3 mm, apex with a distinct, stout, cylindric neck, neck ca. 0.5 mm, truncate or shallowly concave at top; style base slightly thickened, persistent; stigmas 3.  [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Linn. Soc., Bot. 36: 315. 1904 [1903-1905 publ. 1904] to J. Linn....  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Linn. Soc., Bot. 36: 315. 1904 [1903-1905 publ. 1904] to J. Linn. Soc., Bot. 36: 315 (1904), 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 truncatigluma C.B.Clarke. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1677283 on 2026-07-15
Date
action
by
2023-09-06 07:28:28Z
created
2024-12-10 11:47:54Z
unchecked
db_admin
2025-03-11 11:19:03Z
changed
2025-11-18 11:27:56Z
changed

Creative Commons License The webpage text is licensed under a Creative Commons Attribution 4.0 License


Nomenclature

original description Clarke, C. B. (1903). Cyperaceae. In: Forbes, F. & Hemsley, W. B. An enumeration of all the plants known from China proper, Fornosa, Hainan, Corea, the Luchu Archipelago and the Island of Hongkong, together with their distribution and synonymy. <em>Journal of the Linnean Society. Botany.</em> 36: 202-319., available online at https://www.biodiversitylibrary.org/page/178059#page/222/mode/1up
page(s): 315 [details] 

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  PDF available [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  PDF available [request]

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Holotype K 000960799, geounit Zhejiang [details]
Syntype (of Carex gracilispica Hayata) K 000291198, geounit Malaysia [details]
From editor or global species database
Description Rhizome short; culms lateral or subcentral, 10–40 cm tall, slender, trigonous, smooth or slightly scabrous above, with persistent brown or dark brown basal sheaths splitting into fibers; leaves shorter or longer than the culm, leaf blades 2–5 mm wide, flat, upper margins scabrous; bracts leaflike or short-leaflike, much longer than the spikes, bract sheaths 5–15 mm long; spikes 3–5, distant or somewhat close; terminal spike male, clavate-cylindrical or shortly cylindrical, 1–3 cm long, ca. 1.5–2 mm wide; lateral spikes female, cylindrical or narrowly ovoid, 0.8–2.5 cm long, 4–6 mm wide, densely or moderately flowered, peduncles short, peduncle of the lowermost spike slightly exserted or enclosed within the bract sheath; male glumes narrowly oblong or narrowly obovate, 2.5–4 mm long, yellowish-brown or brown, apex acute or obtuse; female glumes narrowly obovate or narrowly elliptic, 2.5–3.5 mm long, yellowish-white or yellowish-brown, apex acute or short-awned, dorsal surface with 3–5 green veins; perigynia ovoid or broadly ovoid, obtusely trigonous, 3–4.5 mm long, slightly longer than the female glumes, yellowish-brown or light brown, membranous, glabrous or sparsely sericeous, base narrowed, apex contracted into a short cylindrical or short necklike beak 0.2–0.6 mm long, beak orifice slightly concave or shallowly 2-toothed; achenes tightly enclosed, obovoid or broadly obovoid, trigonous, 1.7–2.7 mm long, chestnut-brown or brown, apex contracted into a short cylindrical beak 0.2–0.4 mm long, upper and lower faces slightly concave below the angles, style base slightly thickened, stigmas 3. [details]

Description Rhizome obliquely ascending, covered with dark brown fibrous remains of old leaf sheath. Flowering culms arising from axils of leaves, 10-30 cm tall, trigonous, slender, slightly scabrid. Leaves equaling to longer than culm, blade 3-10 mm wide, flat, scabrid on both surfaces, herbaceous. Involucral bracts shortly bladed, sheathed, sheath 6-9 mm. Spikes 4-6; terminal spike male, narrowly cylindric, 1-1.5 cm, ca. 1 mm thick, sessile or with peduncle 0.5-2 cm; lateral spikes female, cylindric, 20-50 × 2.5-3 mm, loosely flowered, uppermost female spike surpassing male spike, with peduncle enclosed in involucral bract sheath, lower female spikes spaced, with exserted peduncles, lowest peduncle 2-4(-6) cm. Female glumes dark yellow, broadly obovate, margins broadly hyaline, green costa projecting into a mucro 0.1-0.3 mm, apex truncate to rounded, often emarginate. Utricles olive-green, longer than glume, fusiform, obscurely trigonous, 3-6 × ca. 1 mm, membranous, minutely pubescent, many veined, base cuneate, stipitate, apex attenuate into a beak, orifice 2-toothed. Nutlet pale brown, tightly enveloped, fusiform, trigonous, 2.5-3 mm, with faces excavated both at upper and lower parts, base stipitate, stipe 0.2-0.3 mm, apex with a distinct, stout, cylindric neck, neck ca. 0.5 mm, truncate or shallowly concave at top; style base slightly thickened, persistent; stigmas 3.  [details]

Habitat in forest understory or along moist mountain slopes at 600–1800 m. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from J. Linn. Soc., Bot. 36: 315. 1904 [1903-1905 publ. 1904] to J. Linn. Soc., Bot. 36: 315 (1904), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
    Definitions

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