View source for Glyceria alnasteretum

{{Treatment/ID
|accepted_name=Glyceria alnasteretum
|accepted_authority=Kom.
|publications=
|common_names=Aleutian glyceria
|basionyms=
|synonyms=
|hierarchy=Poaceae;Poaceae subfam. Pooideae;Poaceae tribe Meliceae;Glyceria;Glyceria sect. Hydropoa;Glyceria alnasteretum
|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 alnasteretum]]</div></div>
|volume=Volume 24
|mention_page=
|treatment_page=page 71
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>perennial, rhizomatous. <b>Culms</b> 60-90 cm tall, 2.5-4 mm thick, erect. <b>Sheaths</b> smooth, not keeled; ligules 2-3 mm, rounded to truncate; blades 5-20 cm long, 3-7 mm wide, abaxial surfaces smooth, adaxial surfaces scabrous, apices acute. <b>Panicles</b> 15-22 cm long, 12-16 cm wide, open, pyramidal, erect to nodding; branches 8-10 cm, lower branches widely divergent to drooping. <b>Spikelets</b> 7-9 mm long, 3-4.5 mm wide, with 5-8 florets. <b>Glumes</b> unequal, lanceolate, acute; lower glumes 2-3.5 mm; upper glumes 2.5-3.5 mm, longer than wide; lemmas 3-5.5 mm, 7-veined, obtuse to acute; paleas shorter than or subequal to the lemmas, keels not winged, apices not strongly incurved, emarginate between the keels; anthers 3, 0.7-1.2 mm. <b>Caryopses</b> not seen. <b>2n</b> = 20.</span><!--

-->{{Treatment/Body
|discussion=<p><i>Glyceria alnasteretum</i> is included in this treatment with some hesitation, based on van Schaack 724 (W'l'LJ 152646) and van Schaack 887 (MO 1710727), both collected at Signal Point, Attu Island, Alaska in 1945. The above description is based on Komarov (1963) and Koyama (1987), modified to reflect the wider panicles and longer glumes and lemmas of the van Schaack specimens. The difference in habitat is troubling. The van Schaack specimens were found "in a beachside meadow" and "near beach." Koyama describes the habitat of <i>G. alnasteretum</i> as "wet meadows and marshes at high altitudes as well as subarctic zone" (p. 114). Nevertheless, the van Schaack specimens fit the description of <i>G. alnasteretum</i> better than any other taxon in this treatment. Clearly, further investigation is called for; it should include plants from both sides of the Bering Strait.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Glyceria alnasteretum
|authority=Kom.
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Poaceae
|illustrator=Cindy Roché
|illustration copyright=Utah State University
|reference=None
|publication title=
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V24/V24_81.xml
|subfamily=Poaceae subfam. Pooideae
|tribe=Poaceae tribe Meliceae
|genus=Glyceria
|section=Glyceria sect. Hydropoa
|species=Glyceria alnasteretum
}}<!--

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