Ischaemum rugosum Salisb.
  • Icon. Stirp. Rar.


Cite taxon page as 'WFO (2020): Ischaemum rugosum Salisb. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000876374. Accessed on: 10 Jul 2020'

General Information

3. Ischaemum rugosum Salisb., Icon. Stirp. Rar. 1, t. 1 (1791). Holotipo: India, König s.n. (LINN).

Por R.W. Pohl y G. Davidse.

Anuales. Tallos 55-130 cm, erectos o decumbentes en la base, ramificados; entrenudos fistulosos, glabros; nudos pilosos. Vainas ciliadas hacia el ápice; lígula 2-5.5 mm, glabra o esparcidamente adpreso pelosa; láminas 8-20 cm x 4-15 mm, papiloso-pilosas, la base cortamente seudopeciolada. Racimos 2, 3-10 cm, apretadamente adpresos, con apariencia de una espiga solitaria, cilíndrica. Espiguillas sésiles 3.8-5 mm, glabras; gluma inferior 3.8-5 mm, el 3/5 inferior endurecido, amarillento, marcadamente corrugudo transversalmente, las nervaduras no visibles, el 2/5 superior herbáceo, el ápice obtuso; gluma superior aguda; lema inferior 3.5-4 mm; pálea inferior rudimentaria; anteras 1.5-1.8 mm; flósculo superior pistilado o bisexual; arista geniculada, la parte exerta 8-13 mm. Espiguillas pediceladas 1.5-4.5 mm, generalmente estaminadas; gluma inferior undulada. 2n=18. Áreas abiertas secundarias húmedas. N (Stevens 20946, MO); CR (Pohl y Davidse 11322, MO); P (Correa A. 1916, MO). 0-600 m. (Nativa de Asia tropical; en la actualidad cosmopolita en los trópicos.)

  • Provided by: [I].Flora Mesoamericana
    • Source: [
    • 1
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    • ]. 

    Annual. Culms loosely tufted, erect to decumbent, 20–100 cm tall, often branching, nodes pubescent. Leaf sheaths loose, papery, lightly keeled, glabrous or pilose with scattered tubercle-based hairs, margins ciliate; leaf blades linear-lanceolate, 10–30 × 0.5–2 cm, glabrous or thinly pilose, margins scabrid, base variable, rounded and constricted, or attenuate and sometimes briefly pseudopetiolate, apex acuminate; ligule 2–5 mm. Racemes terminal and axillary, paired, appressed back to back or slightly separated, 3–11(–13) cm; rachis internodes inflated, thickly clavate, ciliate along midline, inner angles glabrous. Sessile spikelet oblong-ovate, 4–6 × ca. 2 mm; lower glume 2-keeled throughout, crustaceous, yellowish and transversely 4–7-ridged below, ridges sharp, mostly continuous, herbaceous above with many anastomosing green veins, keels scabrid, wingless or winged on one side, apex obliquely obtuse; awn of upper lemma 1.2–2 cm. Pedicelled spikelet dorsally compressed, variable in size, often much reduced especially toward raceme apex, awnless; pedicel elongate when spikelet rudimentary.

  • Provided by: [E].Flora Of CHina @ efloras.org
    • Source: [
    • 9
    • ]. 

    Ischaemum rugosum Salisb., Icon. Stirp. Rar. 1, t. 1. 1791.

    Anuales; tallos 55–130 cm de largo, erectos o decumbentes en la base, ramificados; entrenudos fistulosos, glabros; nudos pilosos. Vainas ciliadas hacia el ápice; lígula 2–5.5 mm de largo, glabra o esparcidamente adpreso pilosa; láminas 8–20 cm de largo y 4–15 mm de ancho, papiloso-pilosas, la base cortamente pseudopeciolada. Racimos 2, 3–10 cm de largo, apretadamente adpresos, con apariencia de espiga solitaria, cilíndrica; espiguillas sésiles 3.8–5 mm de largo, glabras, gluma inferior 3.8–5 mm de largo, el 3/5 inferior endurecido, amarillento, marcadamente corrugado transversalmente, las nervaduras no visibles, el 2/5 superior herbáceo, el ápice obtuso, gluma superior aguda, lema inferior 3.5–4 mm de largo, pálea inferior rudimentaria, anteras 1.5–1.8 mm de largo, flósculo superior pistilado o bisexual, arista geniculada, la parte exerta 8–13 mm de largo; espiguillas pediceladas 1.5–4.5 mm de largo, generalmente estaminadas, gluma inferior undulada.

    Rara, orillas de caminos, cenizas volcánicas, zona pacífica; 100–180 m; fl y fr nov, dic; Stevens 5110, 20946; nativa de Asia tropical, en la actualidad cosmopolita en los trópicos.

  • Provided by: [H].Flora de Nicaragua
    • Source: [
    • 11
    • ]. 

    Annual; culms erect or decumbent at the base, rather freely branching from nearly all the nodes, the nodes bearded; sheaths rather loose, keeled toward the summit, glabrous or sparsely papillose-pilose near the summit; ligule 2-3 mm. long; blades mostly 10-15 cm. long, 6-12 mm. wide, acuminate, narrowed toward the base, sometimes petiole-like, the margins very scabrous; racemes in pairs, ap- pressed together and appearing as if one when young, 3-10 cm. long, terminal on the main culm and branches, long-exserted from the upper bladeless sheath, the rachis thick, readily disarticulating, ciliate on the outer edges; spikelets 3-4 mm. long, obtuse, the summit membranaceous, otherwise indurate with 3-5 strong transverse ridges; awns 1.5 cm. long, tightly twisted below, loosely twisted above the bend.

  • Provided by: [B].Flora de Panama
    • Source: [
    • 12
    • ]. 

    Plantas erectas a erecto-decumbentes, 20–60 cm.Hojas con la vaina glabra, ciliada hacia el ápice; lígula2–5 mm; lámina 6.5–18(–21) cm × 4–17 mm, in-conspicuamente pseudopeciolada basalmente, espar-cidamente papiloso-pilosa a glabrada. Infl. 2.5–9 cm,compuesta por 2 racimos adpresos, que parecen unaespiga solitaria. Espiguillas sésiles 3.5–5 mm, glabras;gluma inferior transversalmente rugosa; lema inferior3–4 mm.

  • Provided by: [D].Manual de Plantas de Costa Rica
    • Source: [
    • 13
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    Morphology

    Straggling annual up to about 1 m. high

  • Provided by: [G].Plants Of the World Online Portal - FWTA
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    • 2
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    Straggling annual; culms 10–100 cm. high.

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 8
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    Pedicelled spikelet resembling the sessile and on a pedicel 1/3 the length of the internode, or much reduced and on a pedicel equalling the internode.

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 8
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    Leaf-blades 5–30 cm. long, 3–15 mm. wide.

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 8
    • ]. 

    Inflorescences terminal and axillary, of paired racemes, each 3–12 cm. long; internodes and pedicels clavate, ciliate.

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 8
    • ]. 

    Sessile spikelet oblong-ovate, 4–6 mm. long; lower glume coriaceous and transversely rugose below, membranous above, 2-keeled along its length; upper lemma with an awn 15–20 mm. long.

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 8
    • ]. 

    Ecology

    Coastal and inland swamps.

  • Provided by: [G].Plants Of the World Online Portal - FWTA
    • Source: [
    • 2
    • ]. 

    Distribution

    A common weed in fields, clearings, brushy slopes, and waste ground. Intro- duced in Panama, Cuba, and Jamaica; a native of the Old World.

  • Provided by: [B].Flora de Panama
    • Source: [
    • 12
    • ]. 

    Distribution Map

     
    • Introduced distribution
    Introduced into
    • Southern America Brazil Amapí
    • Parí
    • Ceará
    • São Paulo
    • Goiás

     Information From

    MBG Floras Images
    http://www.tropicos.org/ImageSearch.aspx
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • A Missouri Botanical Garden
    Flora de Panama
    http://www.tropicos.org/Project/PAC
    Robert E. Woodson, Jr. and Robert W. Schery Annals of the Missouri Botanical Garden Vol. 67, No. 4 (1980), pp. ii-xxxiii
    • B Missouri Botanical Garden
    Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    http://floradobrasil.jbrj.gov.br
    Brazil Flora G (2014): Brazilian Flora 2020 project - Projeto Flora do Brasil 2020. v393.147. Instituto de Pesquisas Jardim Botanico do Rio de Janeiro. Dataset/Checklist. doi:10.15468/1mtkaw
    • C Group Brazil Flora, REFLORA Program
    Manual de Plantas de Costa Rica
    http://www.tropicos.org/Project/Costa%20Rica
    Hammel, B. E.; Grayum, M. H.; Herrera, C.; Zamora, N. Manual de Plantas de Costa Rica. Missouri Botanical Garden Press, 2003-2014
    • D Missouri Botanical Garden
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • E Missouri Botanical Garden
    Plants Of the World Online Portal - FTEA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • F
    Plants Of the World Online Portal - FWTA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • G The Trustees of the Royal Botanic Gardens, Kew
    Flora de Nicaragua
    http://www.tropicos.org/projectwebportal.aspx?projectid=7&pagename=Home&langid=66
    WD Stevens, CU Ulloa, A Pool and OM Montiel. Missouri Botanical Garden Press, 2001
    • H Missouri Botanical Garden
    Flora Mesoamericana
    http://www.mobot.org/MOBOT/fm/
    Gerrit Davidse, Mario Sousa Sánchez, A. O. Chater, Universidad Nacional Autónoma de México. Instituto de Biología, Missouri Botanical Garden, Natural History Museum (London, England) UNAM, 1994
    • I Missouri Botanical Garden
    Poaceae
    • J CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • K CC0 1.0 Universal (CC0 1.0).