Brachypodium P. Beauv.
  • Ess. Agrostogr. 100, 15, pl. 19, f. 35. 1812.


Cite taxon page as 'WFO (2021): Brachypodium P. Beauv. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000005237. Accessed on: 18 Sep 2021'

General Information

58. Brachypodium P. Beauv.

Por R.W. Pohl.

Perennes (Mesoamérica) o anuales, cespitosas o rizomatosas. Tallos ramificados o simples. Lígula una membrana; láminas lineares, aplanadas o plegadas. Inflorescencia un racimo bilateral, terminal, con pocas espiguillas erectas, cortamente pediceladas. Espiguillas solitarias, cilíndricas a comprimidas lateralmente, con 5-20 flósculos bisexuales, el más superior frecuentemente estéril; desarticulación arriba de las glumas y entre los flósculos; glumas y lemas redondeadas en el dorso; glumas 2, desiguales, más cortas que la lema inferior, herbáceas, 3-9-nervias, obtusas o cortamente aristadas; lemas herbáceas o coriáceas, 7-9-nervias, generalmente aristadas; pálea tan larga como la lema o algo más corta, 2-carinadas, las quillas ciliado-pectinadas o escabrosas; lodículas 2, ciliadas; estambres 3; ovario peloso en el ápice; estilos 2. Fruto una cariopsis sulcada; hilo linear; embrión 1/6-1/5 tan largo como la cariopsis. Aprox. 15 spp., 1 sp. de México a Bolivia, las otras del Viejo Mundo.

La única especie en Mesoamérica es Brachypodium mexicanum.

Bibliografía: Tateoka, T. Bol. Soc. Argent. Bot. 12: 44-56 (1968).

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

    Description and distribution as for tribe.

  • Provided by: [D].Flora Of CHina @ efloras.org
    • Source: [
    • 7
    • ]. 

    Spikelets several-flowered, subterete except in anthesis, short-pedicelled, usually appressed, rather distant in simple racemes; glumes strongly nerved, the second broader and a little longer than the first; lemmas rounded on the back, obscurely nerved, awned from the tip; palea about as long as the lemma, strongly ciliate on the keels; caryopsis adnate to the palea.

  • Provided by: [B].Flora de Panama
    • Source: [
    • 8
    • ]. 

    Morphology

    Florets hermaphrodite, all fertile but the uppermost usually reduced.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Perennial or more rarely annual grasses of varying habits, often rhizomatous.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Ligule membranous.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Ovary with a villous apical appendage or simply hairy; styles inserted at the appendage, short; stigmas plumose, laterally exserted.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Caryopsis oblong to linear in outline, convex-concave, with an apical ciliate appendage, usually tightly enclosed by the palea; hilum filiform, very long.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Lodicules 2, lanceolate, with the apex usually truncate, ciliate or more rarely glabrous.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Stamens 3, rarely 2.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Lemmas 7-9-nerved, oblong to oblong-lanceolate, densely imbricate at first, later somewhat spreading, mucronate or with a straight awn, dorsally rounded: callus very short, obtuse.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Paleas slightly shorter than the corresponding lemmas, oblong, with the apex broadly obtuse to truncate, 2-keeled, pectinate-ciliate along the keels.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Rhachilla disarticulating above the glumes and between the florets, glabrous, smooth.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Glumes unequal, 3-7(-9)-nerved.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Inflorescence a simple terminal raceme (pseudo-spike), with the spikelets alternating in 2 rows on opposite sides of the rhachis.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Spikelets subsessile, solitary, several- to many-flowered, at first cylindric, later elatrally slightly compressed, usually awned.

  • Provided by: [A].Plants Of the World Online Portal - FZ
    • Source: [
    • 5
    • ]. 

    Leaf-blades flat and thin, or stiff and convolute

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Tufted or rhizomatous perennials, rarely annual

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Spikelets 6–22-flowered; glumes 3–7-nerved; lemmas usually awned, rarely apiculate; palea a little shorter than the lemma, ciliolate on the keels, truncate.

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Inflorescence a raceme, the pedicels 1–3 mm. long

  • Provided by: [C].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

     Information From

    Plants Of the World Online Portal - FZ
    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
    • A
    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
    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
    • C
    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.
    • D 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
    • E Missouri Botanical Garden
    Poaceae
    • F CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • G CC0 1.0 Universal (CC0 1.0).