Scleria terrestris or Scleria levis  ?

Scleria oblata S.T.Blake ex J.Kern, Reinwardtia 6: 73 1961. (syn: Scleria laevis Willd.) ?;

China (Guangdong) to Trop. Asia as per WCSP;

Andaman Is.; Assam; Bangladesh; Borneo; China Southeast; India; Jawa; Malaya; Myanmar; Nicobar Is.; Philippines; Sri Lanka; Sulawesi; Sumatera; Thailand; Vietnam as per Catalogue of Life;

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Erect tufted rhizomatous perennials, 50-100 cm tall; rhizome short, creeping; stem triquetrous, smooth. Leaves scattered all along the stem, linear, 9 mm wide, margins scabrid, gradually narrowed to an acute tip; sheaths narrow, 7-12 cm long, triquetrous, not winged, mouth brown, puberulous; contraligule reddish, ciliate, 1-2 mm long, obtuse. Inflorescence of 1 terminal and 2-5 lateral panicles; peduncles shortly exerted from the sheaths; primary bracts leaf-like, exceeding the inflorescence, secondary ones smaller, setaceous. Spikelets unisexual, brown; male spikelets peduncled, oblong, 3.5 mm long; female spikelets ovoid, 4-4.5 mm, male part represented by a single glume; glumes 3-4, ovate-acute, 4 mm long, 1-nerved. Stamens 3, anthers 1.5 mm long. Style short; stigmas 3. Nut globose, oblate, depressed apex, 2.2-2.5 x 2.5-3 mm, glabrous, smooth, shining white, shorter than the subtending glume; disk 3-lobed, lobes ovate, obtuse.

(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi from India Biodiversity Portal)
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Grass sp from Assam KD 01, Mar. 2020 : 4 posts by 2 authors. Attachments (3)

Attached images are grass sp. Pl. Id the species.
Date :.29.02. 2020
Location: Assam
Family : Poaceae
Genus & species : ??
Habitat: Grows wild on marshy area with Alpinia sp.
Habit :  Herb

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Scleria spp. probably Scleria laevis of Cyperaceae family. Not a grass.

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Can be Scleria terrestris (L.) Fassett or Scleria levis Retz. Need to check the specimen.

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References:

Catalogue of Life  The Plant List Ver.1.1  WCSP  GBIF (High resolution specimens) High resolution specimen  POWO  Flora of China  India Biodiversity Portal  Kerala plants