Bromus tectorum L.
  • Sp. Pl. : 77 (1753)
  • Forasacco dei tetti


Cite taxon page as 'WFO (2023): Bromus tectorum L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000856649. Accessed on: 28 Jan 2023'

General Information

Annual. Culms erect, 20–60 cm tall, 3- or 4-noded. Leaf sheaths pubescent; leaf blades 5–20 cm, 2–4 mm wide, pubescent; ligule 1.5–2 mm. Panicle spreading, 8–15 cm, secund; branches 3–5 at lower nodes, slender, mostly curved, scabrid, pubescent, each bearing 1–8 slightly nodding spikelets. Spikelets 10–35(–50) mm; florets 4–8; rachilla internodes 2–3 mm; glumes narrowly lanceolate, margins membranous, lower glume 8–15 mm, 1–3-veined, upper glume 11–17 mm, 3–7-veined, apex acute, obtuse, or shortly aristiform; lemmas 9–22 mm, 1–1.5 mm wide in side view, 5–7-veined, scabrid or pubescent, margins thinly membranous, shiny, apex acuminate, acute, or obtuse, 2-toothed, awned from sinus, awn 12–25(–40) mm, slender, straight; palea shorter than or subequal to lemma, keels ciliate. Stamens 3; anthers 0.5–2 mm. Fl. and fr. May–Sep.

  • Provided by: [E].Flora of China @ efloras.org
    • Source: [
    • 1
    • ]. 

    Annual; culms erect, up to 60 cm high. Leaf-blades up to 18 cm long, 2-4 mm wide; sheaths pubescent. Panicle up to 18 cm long, loose or dense, erect or nodding, the branches filiform, flexuous, bearing parallel clusters of spikelets, these usually all turned to one side. Spikelets narrowly wedge-shaped, very fragile, 4-8(-10)-flowered, the upper 1-3 florets sometimes much reduced or aborted, 25-40 mm long including the awns, the lemmas overlapping at first but gaping and exposing the internodes at maturity; glumes with silvery-hyaline margins, the lower narrowly lanceolate, 5-8 mm long, 1-nerved, the upper narrowly oblong-lanceolate, 7-11 mm long, 3-nerved; lemmas linear-lanceolate in side view, the lowest 9-14 mm long, involute, herbaceous with silvery-hyaline margins, 7-nerved, glabrous or pubescent, 2-toothed at the tip with a straight awn as long as or slightly longer than the lemma from between the teeth; palea shorter than the lemma, ciliolate on the keels; anthers 0.5-1 mm long.

  • Provided by: [A].Flora of Pakistan
    • Source: [
    • 2
    • ]. 

    Annual 2–7 dm; sheaths and blades soft-hairy, the latter 2–4 mm wide; ligule 1–2.5(–4) mm; infl 1–2 dm, often nodding, repeatedly but rather openly branched, bearing somewhat crowded, mostly drooping, 3–8-fld spikelets to 2(–3.5) cm on slender pedicels; glumes subulate, the first 5–7 mm, 1-veined, the second 8–11 mm, 3-veined; lemmas narrowly lanceolate, 8–12(–15) mm, evidently hairy or seldom glabrous, 1–1.5 mm wide in side-view, 5–7-veined, acuminate into slender scarious teeth 1–3 mm; awns (7–)10–17 mm; palea shorter than the lemma; anthers 0.5–0.7 mm; 2n=14. Native of Europe, now a common weed nearly throughout the U.S., esp. westward.

  • Provided by: [D].Manual of Vascular Plants of Northeastern US and Canada
    • Source: [
    • 5
    • ]. 

    Morphology

    Tufted annual 100-250 mm high. Leaf blade 60-100 x 2-4 mm, hairy. Inflorescence open, drooping, spikelets ± secund; lower pedicels and branches with ± four spikelets; branches and pedicels twisted or curved, flexuous. Spikelet 8-15(20) x 2-4 mm, moderately laterally compressed, spikelet hairy to glabrous; lower glume 1-nerved; upper glume 7-12 mm long; 3-5-nerved; lemma 8-13 mm long, rounded on back, margins hyaline, bifid; awn 8-20 mm long, straight, arising well below apex; palea ciliate on keels, hairy between keels; callus scar circular, minutely hairy; anthers 0.5-1.0 mm long.

  • Provided by: [C].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Ähnlich wie B. sterilis, aber nur 10–40 cm hoch, Stängel zuoberst unter der Rispe dicht und fein behaart, Rispe dicht, einseitswendig, überhängend. Rispenäste 2–3(–4) cm lang, weichhaarig, oft mit 3–5 Ährchen. Ährchen ohne die Grannen 1–2 cm

  • Provided by: [B].Flora Helvetica – Illustrierte Flora der Schweiz
    • Source: [
    • 4
    • ]. 

    Ecology

    5–7. Bahnareale, Kiesgruben, Rebberge, Wegränder, Schuttplätze, kollin-montan(-subalpin). CH.

  • Provided by: [B].Flora Helvetica – Illustrierte Flora der Schweiz
    • Source: [
    • 4
    • ]. 

    Habitat

    Sandy soil; in disturbed places such as on roadsides.

  • Provided by: [C].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Distribution

    Naturalised from Europe; naturalised in many regions of the world. G, NC.

  • Provided by: [C].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Synonyms

    Other Local Names

    NameLanguageCountry
    Forasacco dei tettiItalianCH
    Brome des toitsFrenchCH
    Dach-TrespeGermanCH
    Tschintschigniva da tetgRaeto-RomanceCH

      Bibliography

     Information From

    Flora of Pakistan
    http://www.tropicos.org/Project/Pakistan
    Flora of Pakistan. Missouri Botanical Garden. Accessed on Jun. 2020.
    • A Missouri Botanical Garden
    Flora Helvetica – Illustrierte Flora der Schweiz
    http://www.flora-helvetica.ch
    Flora Helvetica – Illustrierte Flora der Schweiz, Konrad Lauber, Gerhart Wagner, Andreas Gygax. Haupt Verlag 2018.
    • B All Rights Reserved
    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.21
    • C All Rights Reserved
    Manual of Vascular Plants of Northeastern US and Canada
    https://www.nybg.org/
    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.
    • D Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Flora of China @ efloras.org
    '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
    Poaceae
    https://wcvp.science.kew.org/
    Poaceae. Grasses. World Flora Online Data. 2022.
    • F CC0 1.0 Universal (CC0 1.0).
    World Flora Online Consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2017.
    • G CC0 1.0 Universal (CC0 1.0).