Cyperaceae taxon details
Carex yangchunensis X.F.Jin, Y.F.Lu & D.C.Meng
1794034 (urn:lsid:marinespecies.org:taxname:1794034)
accepted
Species
recent only
Lu, Y.-F.; Meng, D.-C.; Jin, X.-F. (2025). <i>Carex yangchunensis</i>, a new species of Cyperaceae from the limestone regions of Guangdong, South China. <em>PhytoKeys.</em> 251: 257-270., available online at https://doi.org/10.3897/phytokeys.251.142179
page(s): 263 [details] Available for editors
[request]
page(s): 263 [details] Available for editors
[request]
Holotype ZJFC, geounit Guangdong
Holotype ZJFC, geounit Guangdong [details]
Description Perennial herbs. Rhizomes elongate, woody, thick. Culms lateral, 8–25 cm tall, compressed-trigonous, slender, smooth,...
Etymology The specific epithet ‘yangchunensis’ refers to the type locality of this new species in Yangchun County.
LSID urn:lsid:ipni.org:names:77355916-1
Description Perennial herbs. Rhizomes elongate, woody, thick. Culms lateral, 8–25 cm tall, compressed-trigonous, slender, smooth, base with dark-brown or brown sheaths, sometimes splitting into fibres. Leaves far longer than culms, apex slender long-caudate; blades 3–6 mm wide, thinly leathery, flat, upper margins and both surfaces scabrous. Bracts short-setaceous, sheathed; sheaths 3–10 mm long, with the most proximal one longer than the others. Spikes 4–8, androgynous, ovoid or nearly globose, 3–8 mm long, base with a 3–17 mm long slender peduncle, staminate part ca. 2 mm long, slightly exserted or hidden in pistillate flowers, pistillate part 3–6 mm long, densely 4–12-flowered; peduncles exserted from bract sheaths. Staminate glumes ovate, 1.5–2 mm long, yellow-white, obtuse at apex, green 3-veined dorsal costa. Pistillate glumes obovate or ovate, 2–2.5 mm long, pale yellow-green, acute or obtuse at apex, green 3-veined dorsal costa. Utricles yellow-green, broadly rhombic-obovoid (excluding beak), obtusely compressed-trigonous, 2.5–3.5 mm long (including beak), longer than pistillate glumes, yellow-green, membranous, distinctly thinly veined, sparsely pubescent on upper dorsal surface and margins, densely pubescent on ventral surface, base cuneate and narrowed into a ca. 0.5 mm long stipe, apex gradually contracted into a ca. 0.3 mm long beak, orifice 2-lobed with minute teeth. Nutlets tightly enveloped, rhombic-ovoid, trigonous, yellow, 2–2.2 mm long, with 3 angles constricted at middle, sides concave above and below, base with a 0.3–0.7 mm long stipe; style thickened at base, persistent, coiled; stigmas 3. [details]
Etymology The specific epithet ‘yangchunensis’ refers to the type locality of this new species in Yangchun County.
Etymology The specific epithet ‘yangchunensis’ refers to the type locality of this new species in Yangchun County. [details]
LSID urn:lsid:ipni.org:names:77355916-1
LSID urn:lsid:ipni.org:names:77355916-1 [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex yangchunensis X.F.Jin, Y.F.Lu & D.C.Meng. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1794034 on 2025-09-14
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Nomenclature
original description
Lu, Y.-F.; Meng, D.-C.; Jin, X.-F. (2025). <i>Carex yangchunensis</i>, a new species of Cyperaceae from the limestone regions of Guangdong, South China. <em>PhytoKeys.</em> 251: 257-270., available online at https://doi.org/10.3897/phytokeys.251.142179
page(s): 263 [details] Available for editors [request]
page(s): 263 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
Holotype ZJFC, geounit Guangdong [details]
Isotype IBK, geounit Guangdong [details]
Isotype PE, geounit Guangdong [details]
Isotype ZJFC, geounit Guangdong [details]
Isotype ZM, geounit Guangdong [details]
From editor or global species database
Description Perennial herbs. Rhizomes elongate, woody, thick. Culms lateral, 8–25 cm tall, compressed-trigonous, slender, smooth, base with dark-brown or brown sheaths, sometimes splitting into fibres. Leaves far longer than culms, apex slender long-caudate; blades 3–6 mm wide, thinly leathery, flat, upper margins and both surfaces scabrous. Bracts short-setaceous, sheathed; sheaths 3–10 mm long, with the most proximal one longer than the others. Spikes 4–8, androgynous, ovoid or nearly globose, 3–8 mm long, base with a 3–17 mm long slender peduncle, staminate part ca. 2 mm long, slightly exserted or hidden in pistillate flowers, pistillate part 3–6 mm long, densely 4–12-flowered; peduncles exserted from bract sheaths. Staminate glumes ovate, 1.5–2 mm long, yellow-white, obtuse at apex, green 3-veined dorsal costa. Pistillate glumes obovate or ovate, 2–2.5 mm long, pale yellow-green, acute or obtuse at apex, green 3-veined dorsal costa. Utricles yellow-green, broadly rhombic-obovoid (excluding beak), obtusely compressed-trigonous, 2.5–3.5 mm long (including beak), longer than pistillate glumes, yellow-green, membranous, distinctly thinly veined, sparsely pubescent on upper dorsal surface and margins, densely pubescent on ventral surface, base cuneate and narrowed into a ca. 0.5 mm long stipe, apex gradually contracted into a ca. 0.3 mm long beak, orifice 2-lobed with minute teeth. Nutlets tightly enveloped, rhombic-ovoid, trigonous, yellow, 2–2.2 mm long, with 3 angles constricted at middle, sides concave above and below, base with a 0.3–0.7 mm long stipe; style thickened at base, persistent, coiled; stigmas 3. [details]Diagnosis This new species is similar to Carex cryptostachys Brongn., but differs in having spikes 4–8, ovoid or nearly globose, 3–8 mm long (vs. spikes 6–10, cylindrical, 9–25 mm long), utricles 2.5–3.5 mm long (vs. 3.5–4.5 mm long), nutlets 2–2.2 mm long, with styles thickened at base (vs. 2.5–3 mm long, style base not thickened), leaves 3–6 mm wide (vs. 6–16 mm wide) and culms 8–25 cm tall (vs. 10–35 cm tall). [details]
Etymology The specific epithet ‘yangchunensis’ refers to the type locality of this new species in Yangchun County. [details]
LSID urn:lsid:ipni.org:names:77355916-1 [details]
| Language | Name | |
|---|---|---|
| Chinese | yáng chūn tái cǎo (阳春薹草) | [details] |
From editor or global species database
