View source for Glyceria maxima

{{Treatment/ID
|accepted_name=Glyceria maxima
|accepted_authority=(Hartm.) Holmb.
|publications=
|common_names=Tall glyceria;English watergrass;Glycerie aquatique
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Meliceae;Glyceria;Glyceria sect. Hydropoa;Glyceria maxima
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Poaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Poaceae subfam. Pooideae]]</div><div class="higher-taxon"><small>tribe</small>[[Poaceae tribe Meliceae]]</div><div class="higher-taxon"><small>genus</small>[[Glyceria]]</div><div class="higher-taxon"><small>section</small>[[Glyceria sect. Hydropoa]]</div><div class="higher-taxon"><small>species</small>[[Glyceria maxima]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 73
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial. <b>Culms</b> 60-250 cm tall, 6-12 mm thick, erect. <b>Sheaths</b> scabridulous, keeled; ligules 1.2-6 mm, rounded or with a central point, ligules of the lower leaves thick, stiff, and opaque, ligules of the upper leaves thinner and translucent; blades 30-60 cm long, 6-20 mm wide, both surfaces smooth or adaxial surfaces scabridulous. <b>Panicles</b> 15-45 cm long, to 30 cm wide, open; branches 8-20 cm, lax, strongly divergent or drooping at maturity, scabridulous, primary branches with 50+ spikelets; pedicels 0.8-10 mm. <b>Spikelets</b> 5-12 mm long, 2-3.5 mm wide, somewhat laterally compressed, oval in side view, with 4-10 florets. <b>Glumes</b> unequal, usually the midvein of 1 or both reaching to the apices; lower glumes 2-3 mm; upper glumes 3-4 mm, longer than wide; rachilla internodes 0.5-1 mm; lemmas 3-4 mm, 7-veined, veins scabridulous, apices broadly acute to rounded, slightly prow-shaped; paleas subequal to the lemmas, lengths more than 3 times widths, keels not winged, ciliate, tips not strongly incurved, curved to broadly notched between the keels; anthers 3, (1)1.2-2 mm. <b>Caryopses</b> 1.5-2 mm. <b>2n</b> = 60.</span><!--

-->{{Treatment/Body
|distribution=B.C.;Nfld. and Labr. (Labr.);Ont.;Que.;Alaska;Mass.;Wis.;Conn.
|discussion=<p><i>Glyceria maxima</i> is native to Eurasia. It grows in wet areas, including shallow water, at scattered locations in the flora region. It is an excellent fodder grass, and may have been planted deliberately at one time (Dore and McNeill 1980). At some sites, the species appears to be spreading, largely vegetatively. It is easily confused with large specimens of <i>G. grandis</i>, but differs in its firmer, more prow-tipped lemmas as well as its larger lemmas and usually larger anthers.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Glyceria maxima
|authority=(Hartm.) Holmb.
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Poaceae
|illustrator=Cindy Roché
|illustration copyright=Utah State University
|distribution=B.C.;Nfld. and Labr. (Labr.);Ont.;Que.;Alaska;Mass.;Wis.;Conn.
|reference=None
|publication title=
|publication year=
|special status=Introduced
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V24/V24_82.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Meliceae
|genus=Glyceria
|section=Glyceria sect. Hydropoa
|species=Glyceria maxima
}}<!--

-->[[Category:Treatment]][[Category:Glyceria sect. Hydropoa]]