Calamagrostis Adans.
  • Fam. Pl. 2: 31, 530. 1763.


Cite taxon page as 'WFO (2021): Calamagrostis Adans. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000005939. Accessed on: 28 Sep 2021'

General Information

47. Calamagrostis Adans.

Deyeuxia Clarion ex P. Beauv.

Por R.W. Pohl y G. Davidse.

Perennes cespitosas o rizomatosas. Tallos simples. Lígula una membrana; láminas lineares, aplanadas a involutas. Inflorescencia una panícula terminal, abierta a contraída. Espiguillas comprimidas lateralmente, con 1 flósculo bisexual; desarticulación arriba de las glumas; glumas más largas que el flósculo, iguales o subiguales, 1-3-nervias; lema generalmente 5-nervia, membranácea, aristada desde el dorso, a veces no aristada, el ápice truncado a 2-fido o cortamente 4-aristado; callo generalmente obtuso, raramente recurvado o alargado, generalmente piloso; pálea generalmente escasamente más corta que la lema, 2-nervia; raquilla prolongada por detrás de la pálea como una cerda desnuda o pilosa; lodículas 2; estambres 1-3; estilos 2; ovario glabro. Fruto una cariopsis; hilo punteado; endospermo sólido a menudo líquido o blando. Aprox. 270 spp. Cosmopolita en regiones templadas a subárticas o montañas altas de los trópicos.

  • Provided by: [F].Flora Mesoamericana
    • Source: [
    • 5
    • 1
    • ]. 

    Hierbas cespitosas a rizomatosas. Hojas con la vaina pubescente, glabrada o glabra; lígula una membrana;lámina linear, aplanada a involuta. Infl. una panícula terminal. Espiguillas comprimidas lateralmente; desarti-culación por arriba de las glumas; glumas más largas que el flósculo, iguales a subiguales, 1–3-nervadas;raquilla prolongada por detrás de la pálea como una cerda; flósculo 1, bisexual; lema 5-nervada, aristada dor-salmente (rara vez no aristada); pálea ligeramente más corta que la lema, binervada.

  • Provided by: [D].Manual de Plantas de Costa Rica
    • Source: [
    • 6
    • ]. 

    Perennials, often robust, sometimes rhizomatous. Leaf blades linear, usually flat; ligule membranous. Inflorescence a panicle, loosely contracted to dense and spikelike, often plumose, branches usually whorled, bearing numerous spikelets. Spikelets with 1 floret; rachilla disarticulating above glumes, extension beyond floret absent or small and glabrous, rarely better developed and penicillate; glumes persistent, subequal or unequal with lower longer, narrowly lanceolate, much exceeding floret, lower glume 1-veined, upper glume 3-veined at base, apex finely acuminate or subulate; floret callus conspicuously bearded, hairs much exceeding floret; lemma ca. 1/2 as long as glumes, hyaline, 3–5-veined, awned, apex erose, denticulate or deeply 2-lobed; awn very slender, straight or almost so, arising from lemma back, apex or between teeth; palea 1/2 as long to slightly shorter than lemma. Stamens usually 3, rarely 1.

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

    "Spikelets 1-fld, articulated above the glumes; glumes subequal, acute or acuminate, the first usually a little the larger, lemma equaling or shorter than the glumes, inconspicuously 5-veined, tapering to an obtuse or truncate, erose tip, usually thin and membranous, subtended at base by white hairs arising from the callus, and bearing a slender dorsal awn; palea membranous, half to fully as long as the lemma; rachilla prolonged (in our native spp.) behind the palea as a slender, usually hairy, often inconspicuous bristle, perennials, often rhizomatous, with long narrow lvs and a loose and open to contracted and spike-like panicle. 150+, temp. and cool reg. Many of the plants at higher ploidy-levels are apomictic."

  • Provided by: [C].New York Botanical Garden
    • Source: [
    • 8
    • ]. 

    Morphology

    Spikelets linear to lanceolate, acuminate; rhachilla disarticulating above the glumes, not prolonged or only as a very short bristle; glumes persistent, subequal, linear-lanceolate to narrowly lanceolate, firmly membranous, keeled upwards, finely acute, the lower 1-nerved, the upper 1–3-nerved; lemma lanceolate to oblong, shorter than the glumes, hyaline, glabrous, 3–5-nerved, truncate-denticulate or ± bifid with the lobes acute or toothed, awned from the back or from the sinus of the lobes or from the tip; awn short, fine and straight; callus bearded with long white hairs, as long as or often much longer than the lemmas; palea as long as the lemma or shorter.

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 4
    • ]. 

    Panicle usually rather narrow and dense

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 4
    • ]. 

    Leaf-blades flat

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 4
    • ]. 

    Tufted perennials

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 4
    • ]. 

    Included Species

     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 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.
    • B Missouri Botanical Garden
    New York Botanical Garden
    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.
    • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    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
    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
    • E
    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
    • F Missouri Botanical Garden
    Poaceae
    • G CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • H CC0 1.0 Universal (CC0 1.0).