Fimbristylis miliacea (L.) Vahl
  • Enum. Pl. Obs. 2: 287 (1805)
  • nuat pla duk (หนวดปลาดุก)(Peninsular)

Cite taxon page as 'WFO (2023): Fimbristylis miliacea (L.) Vahl. Published on the Internet; Accessed on: 30 Jan 2023'

General Information

Plants annual, cespitose, 15–50(–70) cm, glabrous, base soft; rhizomes absent. Leaves distichous, in fans, to ca. 2/3 plant height; sheaths keeled, equitant, margins entire; ligule absent; blades bifacial (flattened in same plane as sheath), narrowly triangular linear, to 2 mm wide, margins scabrid at least distally. Inflorescences: anthela compound, usually diffuse, branched, broadening upward, often as broad as long; scapes slender, angularly ribbed and/or somewhat compressed distally, 1–1.5 mm wide or thick; involucral bracts exceeded by anthela. Spikelets dark red-brown, broadly ovoid to near round, 2–4 min; fertile scales broadly ovate to orbiculate, 1 mm, glabrous, apex broadly rounded, midrib not excurrent. Flowers: stamens 1–2; styles 3-fid, slender, base dilated, apex pubescent. Achenes pale brown, tumid, obovoid, 1 mm, apiculate, reticulate, with pits narrowly rectangular in 4–6 vertical rows per side, the longitudinal ribs most prominent and mostly warty. 2n = 10.

  • Provided by: [I].Flora of North America @
    • Source: [
    • 2
    • ]. 

    ... VER ... Fimbristylis littoralis

  • Provided by: [H].Flora de Nicaragua
    • Source: [
    • 3
    • ]. 

    Annual, slender, glabrous, 2-7 dm. high; leaves soft, 1-3 mm. wide, usually shorter than the culms; spikelets numerous, subglobose, 2-4 mm. long, brown, in a decompound inflorescence; achenes trigonous, minute (0.5 mm. long), pale brown, frequently iridescent.

  • Provided by: [F].Flora de Panama
    • Source: [
    • 4
    • ]. 

    Tufted, glabrous annual, 10-40 cm. Stem 0.8-1.2 mm diam., usually triangular or quadrangular, sometimes compressed, sides deeply concave. Leaves as long as stem or longer; lower sheaths open, prominently nerved, with widely scarious margins, upper 2(-3) closed, 2-8 cm, mouth oblique, one side green, many-nerved, nerves ending in acute apex, mouth margin scarious; blades 1.5-2 mm wide, laterally compressed, adaxial side narrow groove at one "margin", margins towards apex slightly barbed. Inflorescence up to 50 mm diam., taller than wide, with 15-50 spikes; bracts up to 20 mm, involute; branches triangular or compressed, much longer than spikes, smooth or distal parts barbed. Spikes 1.5-3 mm, pedunculate or sessile, globular or ellipsoid, obtuse, pale yellow to brown, with from few to more than 30 glumes; spike rachis castaneous to almost black, with narrow hyaline wings; glumes 1-1.2 mm, cymbiform, ovate, keeled, apiculate or sometimes obtuse, brown to almost hyaline. Stamens 1-2, anthers c. 1 x 0.3 mm, mucronate; style 0.3-0.4 mm, brown, base mostly bulbous, deciduous; stigmas (2-)3. Nut 0.5-0.6 x 0.3-0.4 mm, globular to obovoid, faintly trabeculate, papillose, grey to pale yellowish or white.

  • Provided by: [G].Flora of Pakistan
    • Source: [
    • 6
    • ]. 

    Annual or short-lived perennial. Culms arising from leaf axils, several, 10–60(–90) cm by 1–3 mm, 4-sided, smooth. Leaves basal, or cauline reduced to bladeless sheaths; blade linear, 10–50 cm by 1–4 mm, subacute, bilaterally flattened; basal sheaths 1–18 cm long, open, cauline sheaths tubular, 2–10 cm long; ligule 0. Involucral bracts 2–4, setaceous, the longest 1–3 cm long. Inflorescence compound to decompound, open, 3–10 by 3–10 cm; primary branches 3–7, 1–7 cm long. Spikelets many per inflorescence, ovoid-globose to globose, 1.5–3(–5) by 1–2.1 mm. Glumes many per spikelet, spirally arranged, broadly ovate, 1–1.2 by 0.6–0.8 mm, obtuse, sides membranous, reddish brown, margins broadly hyaline, keel obtuse, yellowish, obscurely 3-nerved. Stamens 1(–2); anthers 0.6 mm long. Stigmas 3. Nutlets obovoid, trigonous, 0.6–0.8 by 0.3–0.5 mm, creamy yellow, sparsely verruculose especially on angles, cancellate with 5–7 longitudinal rows of transversely linear-oblong cells.

  • Provided by: [D].e-Flora of Thailand
    • Source: [
    • 7
    • ]. 

    Tufted annual to 5(–10) dm; lvs distichous and equitant, smooth, rigid; ligule wanting; longest invol bract shorter than the infl; spikelets 2–4 mm, stout, in a loose to congested system of cymes; scales ovate, usually blunt or emarginate; stamens 1 or 2; anthers less than 1 mm; style trifid, not much longer than the achene, ± fimbriate below the branches; achene 1 mm, obovoid, plump but scarcely trigonous, with several smooth or often warty vertical ribs connected by numerous fine raised ridges; 2n=10. Wet places, often a rice-field weed; pantropical, n. to Ky.

  • Provided by: [B].Manual of Vascular Plants of Northeastern US and Canada
    • Source: [
    • 8
    • ]. 


    Common weed of rice fields and wet places, low to medium altitudes.

  • Provided by: [D].e-Flora of Thailand
    • Source: [
    • 7
    • ]. 


    In wet, often sandy soil, at low' altitudes. Tropical regions of both hemispheres.

  • Provided by: [F].Flora de Panama
    • Source: [
    • 4
    • ]. 

    Tropical and subtropical regions worldwide (India, type).

  • Provided by: [D].e-Flora of Thailand
    • Source: [
    • 7
    • ]. 

    Distribution Map

    • Native distribution
    • Introduced distribution
    Found in
    • Southern America Brazil Acre
    • Amapí
    • Amazonas
    • Parí
    • Rondônia
    • Roraima
    • Tocantins
    • Alagoas
    • Bahia
    • Ceará
    • Maranh
    • Paraába
    • Pernambuco
    • Piauá
    • Rio Grande do Norte
    • Sergipe
    • Paraní
    • Rio Grande do Sul
    • Santa Catarina
    • Espirito Santo
    • Minas Gerais
    • Rio de Janeiro
    • São Paulo
    • Brazilia Distrito Federal
    • Goiás
    • Mato Grosso
    • Mato Grosso do Sul
    Introduced into
    • Asia-Tropical Indo-China Thailand

    Other Local Names

    nuat pla duk (หนวดปลาดุก)(Peninsular)ThaiTHA
    ya rat khiat (หญ้ารัดเขียด)(Northern)ThaiTHA

     Information From

    World Flora Online Data. 2021.
    • A CC0 1.0 Universal (CC0 1.0).
    Manual of Vascular Plants of Northeastern US and Canada
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    e-Flora of Thailand
    Chayamarit, K. & Balslev, H. (eds.) (2019). Flora of Thailand. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.
    • C All Rights Reserved
    • D Forest Herbarium All rights reserved
    Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    The Brazilian Flora Group (2018): Brazilian Flora 2020. Dataset/Checklist:
    • E Group Brazil Flora, REFLORA Program
    Flora de Panama
    Robert E. Woodson, Jr. and Robert W. Schery Annals of the Missouri Botanical Garden Vol. 67, No. 4 (1980), pp. ii-xxxiii
    • F Missouri Botanical Garden
    Flora of Pakistan
    Flora of Pakistan. Missouri Botanical Garden. Accessed on Jun. 2020.
    • G Missouri Botanical Garden
    Flora de Nicaragua
    W. D. Stevens, C. Ulloa Ulloa, A. Pool & O. M. Montiel. 2001–. Flora de Nicaragua, Tropicos Project. Loaded from Tropicos Project: October 2017
    • H Missouri Botanical Garden
    Flora of North America @
    'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • I Flora of North America Association