Cyperaceae taxon details
Carex augustini Tuyama
1695842 (urn:lsid:marinespecies.org:taxname:1695842)
accepted
Species
terrestrial
Not documented
Type locality contained in Bonin
type locality contained in Bonin [details]
Description Rhizome short, woody. Culms densely tufted, lateral, 40–70 cm tall, bluntly trigonous, smooth, at the base with...
Distribution JAPAN: The Iwo Islands (Minami-iwojima Island). Forest floors, 600-900 m. Endemic. This species was collected only once.
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Mag. (Tokyo) 52: 463. 1938 to Bot. Mag. (Tokyo) 52: 463 (1938),...
Description Rhizome short, woody. Culms densely tufted, lateral, 40–70 cm tall, bluntly trigonous, smooth, at the base with pale-brown persistent leaf sheaths, split into fibrous strips. Leaves shorter than the culms, or sometimes nearly as long; leaf blades 6–18 mm wide, herbaceous, flat-spreading, rough on the back and on the margins. Bracts short-leafy or short setaceous, shorter than the spikes, with a sheath, sheath 4–12 mm long. Spikes 5 or 6, distant from each other; terminal spike male, club-shaped cylindrical, 2–6 cm long, 2–4 mm wide; lateral spikes female, with a male portion at the apex, cylindrical, 1.5–5 cm long, 5–7 mm wide, flowers densely arranged, peduncles of spikes usually enclosed within the bract sheaths. Male glumes oblanceolate, 5.5–6.5 mm long, greenish-white, apex acute, with 3 faint yellowish mid-nerves on the back. Female glumes long-ovate, about 4.5 mm long, greenish-white, apex gradually acuminate, with 3 green mid-nerves on the back. Utricles obovoid-globose, bluntly trigonous, slightly inflated, 4.5–5.5 mm long, nearly as long as the female glumes, pale yellowish-green, membranous, with many fine veins, base gradually narrowed, apex gradually narrowed into a beak 1.2–1.5 mm long, beak mouth with 2 minute teeth. Nutlets somewhat loosely enclosed in the utricles, obovoid-globose, trigonous, 2–2.2 mm long, chestnut-brown, apex abruptly constricted into an annular disc, base with a short stipe; base of style slightly thickened; stigmas 2 or 3. [details]
Distribution JAPAN: The Iwo Islands (Minami-iwojima Island). Forest floors, 600-900 m. Endemic. This species was collected only once.
Distribution JAPAN: The Iwo Islands (Minami-iwojima Island). Forest floors, 600-900 m. Endemic. This species was collected only once.
Minami-iwojima Island: https://maps.app.goo.gl/yoj43Vv5AWwHFEzJ6 [details]
Minami-iwojima Island: https://maps.app.goo.gl/yoj43Vv5AWwHFEzJ6 [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Mag. (Tokyo) 52: 463. 1938 to Bot. Mag. (Tokyo) 52: 463 (1938),...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Mag. (Tokyo) 52: 463. 1938 to Bot. Mag. (Tokyo) 52: 463 (1938), 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 augustini Tuyama. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1695842 on 2025-11-23
Date
action
by
2024-12-10 11:47:54Z
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db_admin
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
basis of record
Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Taxonomy
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description Rhizome short, woody. Culms densely tufted, lateral, 40–70 cm tall, bluntly trigonous, smooth, at the base with pale-brown persistent leaf sheaths, split into fibrous strips. Leaves shorter than the culms, or sometimes nearly as long; leaf blades 6–18 mm wide, herbaceous, flat-spreading, rough on the back and on the margins. Bracts short-leafy or short setaceous, shorter than the spikes, with a sheath, sheath 4–12 mm long. Spikes 5 or 6, distant from each other; terminal spike male, club-shaped cylindrical, 2–6 cm long, 2–4 mm wide; lateral spikes female, with a male portion at the apex, cylindrical, 1.5–5 cm long, 5–7 mm wide, flowers densely arranged, peduncles of spikes usually enclosed within the bract sheaths. Male glumes oblanceolate, 5.5–6.5 mm long, greenish-white, apex acute, with 3 faint yellowish mid-nerves on the back. Female glumes long-ovate, about 4.5 mm long, greenish-white, apex gradually acuminate, with 3 green mid-nerves on the back. Utricles obovoid-globose, bluntly trigonous, slightly inflated, 4.5–5.5 mm long, nearly as long as the female glumes, pale yellowish-green, membranous, with many fine veins, base gradually narrowed, apex gradually narrowed into a beak 1.2–1.5 mm long, beak mouth with 2 minute teeth. Nutlets somewhat loosely enclosed in the utricles, obovoid-globose, trigonous, 2–2.2 mm long, chestnut-brown, apex abruptly constricted into an annular disc, base with a short stipe; base of style slightly thickened; stigmas 2 or 3. [details]Distribution JAPAN: The Iwo Islands (Minami-iwojima Island). Forest floors, 600-900 m. Endemic. This species was collected only once.
Minami-iwojima Island: https://maps.app.goo.gl/yoj43Vv5AWwHFEzJ6 [details]
Habitat Growing in moist places under forest at 500–900 m altitude. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Bot. Mag. (Tokyo) 52: 463. 1938 to Bot. Mag. (Tokyo) 52: 463 (1938), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
| Language | Name | |
|---|---|---|
| Japanese | ウミノサチスゲ | [details] |
Photos of Cyperaceae by Hoshino Labo. from Japan
To International Plant Names Index (IPNI)
To Plants of the World Online
To University of Tokyo Herbarium (Carex Augustini type TI00010018)
To University of Tokyo Herbarium (Carex Augustini type TI00010019)
To University of Tokyo Herbarium (Carex Augustini type TI00010020)
To University of Tokyo Herbarium (Carex Augustini type TI00010021)
To University of Tokyo Herbarium (Carex Augustini type TI00010022)
To International Plant Names Index (IPNI)
To Plants of the World Online
To University of Tokyo Herbarium (Carex Augustini type TI00010018)
To University of Tokyo Herbarium (Carex Augustini type TI00010019)
To University of Tokyo Herbarium (Carex Augustini type TI00010020)
To University of Tokyo Herbarium (Carex Augustini type TI00010021)
To University of Tokyo Herbarium (Carex Augustini type TI00010022)
From editor or global species database
Hosted externally
Hosted externally
Hosted externally
Hosted externally
Hosted externally
