Cyperaceae taxon details
Carex shimizui Okih.Yano, Katsuy., W.Ohnishi & T.Hoshino
1813562 (urn:lsid:marinespecies.org:taxname:1813562)
accepted
Species
recent only
Yano, O.; Ohnishi, W.; Katsuyama, T.; Hoshino, T. (2024). Two new species of Carex (Cyperaceae), C. satsumasendaica and C. shimizui, from Kagoshima Prefecture, Japan. <em>The Journal of Japanese Botany.</em> 99(1): 16-24., available online at https://doi.org/10.51033/jjapbot.ID0185
page(s): 20 [details] Available for editors
[request]
page(s): 20 [details] Available for editors
[request]
Holotype OKAY
20588, geounit Kyushu
20588, geounit Kyushu
Holotype OKAY
20588, geounit Kyushu [details]
20588, geounit Kyushu [details]
Description Herbs, perennial, evergreen. Rhizomes short, cespitose, sometimes with short stolons. Culms central on leafy shoots,...
Description Herbs, perennial, evergreen. Rhizomes short, cespitose, sometimes with short stolons. Culms central on leafy shoots, several to many, 20–50 cm tall, trigonous, upwardly scabrous, 0.5–1 mm thick. Leaves radical; foliage leaves green, linear, 20–60 cm long, flat, 2–5 mm wide, stiff, margins scabrous to serrulate, basal sheath part shortly developed; basal sheath leaves reddish or dark brown, shining, slightly fibrillose. Flowers April to May. Inflorescences racemose, with 3–6 spikes on upper 1/2 to 2/3 of culm, solitary at each node; terminal spike staminate, pedunculate, linear, 2–4 cm long, 2–3 mm wide, reddish or dark brown; lateral spikes androgynous with short staminate portion or pistillate, pedunculate, erect to ascending, cylindrical, 1.5–3.5 cm long, 3–4 mm wide, many flowered. Bracts setaceous, with long sheath, rather loose. Staminate scales narrowly elliptic to lanceolate, 4–5 mm long, apex awned, awn ca. 3 mm long. Pistillate scales lanceolate to ovate, 2–3 mm long, apex awned, awn 1–3 mm long, midrib green or whitish, margins widely pale to reddish brown. Perigynia ovoid to fusiform, trigonous, 3–3.5 mm long, ca. 1 mm wide, membranaceous, several veined, slightly pubescent, yellowish green, base cuneate, beak 1.5 mm long, apex bidentate. Achenes tightly enveloped by perigynia, ellipsoid to ovoid, trigonous, 2 mm long, ca. 1 mm wide, base short stipitate; style
base minutely annulate. Stigmas 3. [details]
base minutely annulate. Stigmas 3. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex shimizui Okih.Yano, Katsuy., W.Ohnishi & T.Hoshino. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1813562 on 2025-09-13
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Nomenclature
original description
Yano, O.; Ohnishi, W.; Katsuyama, T.; Hoshino, T. (2024). Two new species of Carex (Cyperaceae), C. satsumasendaica and C. shimizui, from Kagoshima Prefecture, Japan. <em>The Journal of Japanese Botany.</em> 99(1): 16-24., available online at https://doi.org/10.51033/jjapbot.ID0185
page(s): 20 [details] Available for editors [request]
page(s): 20 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
Holotype OKAY
20588, geounit Kyushu [details]
20588, geounit Kyushu [details]
From editor or global species database
Description Herbs, perennial, evergreen. Rhizomes short, cespitose, sometimes with short stolons. Culms central on leafy shoots, several to many, 20–50 cm tall, trigonous, upwardly scabrous, 0.5–1 mm thick. Leaves radical; foliage leaves green, linear, 20–60 cm long, flat, 2–5 mm wide, stiff, margins scabrous to serrulate, basal sheath part shortly developed; basal sheath leaves reddish or dark brown, shining, slightly fibrillose. Flowers April to May. Inflorescences racemose, with 3–6 spikes on upper 1/2 to 2/3 of culm, solitary at each node; terminal spike staminate, pedunculate, linear, 2–4 cm long, 2–3 mm wide, reddish or dark brown; lateral spikes androgynous with short staminate portion or pistillate, pedunculate, erect to ascending, cylindrical, 1.5–3.5 cm long, 3–4 mm wide, many flowered. Bracts setaceous, with long sheath, rather loose. Staminate scales narrowly elliptic to lanceolate, 4–5 mm long, apex awned, awn ca. 3 mm long. Pistillate scales lanceolate to ovate, 2–3 mm long, apex awned, awn 1–3 mm long, midrib green or whitish, margins widely pale to reddish brown. Perigynia ovoid to fusiform, trigonous, 3–3.5 mm long, ca. 1 mm wide, membranaceous, several veined, slightly pubescent, yellowish green, base cuneate, beak 1.5 mm long, apex bidentate. Achenes tightly enveloped by perigynia, ellipsoid to ovoid, trigonous, 2 mm long, ca. 1 mm wide, base short stipitate; stylebase minutely annulate. Stigmas 3. [details]
| Language | Name | |
|---|---|---|
| Japanese | カノヤスゲ | [details] |
