View source for Conostomum tetragonum

{{Treatment/ID
|accepted_name=Conostomum tetragonum
|accepted_authority=(Hedwig) Lindberg
|publications={{Treatment/Publication
|title=Öfvers. Kongl. Vetensk.-Akad. Förh.
|place=20: 392. 1863
|year=1863
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Mnium tetragonum
|authority=Hedwig
|publication_title=Sp. Musc. Frond.,
|publication_place=73. 1801
}}
|synonyms={{Treatment/ID/Synonym
|name=Conostomum boreale
|authority=Swartz
}}
|hierarchy=Bartramiaceae;Conostomum;Conostomum tetragonum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Bartramiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Conostomum]]</div><div class="higher-taxon"><small>species</small>[[Conostomum tetragonum]]</div></div>
|volume=Volume 28
|mention_page=page 99, 198
|treatment_page=page 98
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>brown. <b>Leaves</b> stiffly erect, keeled, 1–1.5 mm; alar cells undifferentiated; basal laminal cells rectangular; distal cells 24–30 × 7–8 µm. <b>Perigonia</b> large, paraphyses subclavate. <b>Perichaetial</b> leaves subulate, base ovate, 2–2.5 mm. <b>Seta</b> yellowish red to brown, 0.8–2.5 cm. <b>Capsule</b> ovoid, slightly asymmetric, 2–2.5 mm, neck short, swollen; operculum obliquely rostrate, beak stout; exostome teeth with border narrow, yellow, connate teeth forming perforated cone. <b>Spores</b> 41–52 µm.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature Jun–Aug.
|habitat=Thin soil, cliff ledges, among boulders, waterlogged soil of late season snow melt
|elevation=low to high elevations (0-2200 m)
|distribution=Greenland;Alta.;B.C.;N.B.;Nfld. and Labr.;N.W.T.;Nunavut;Que.;Yukon;Alaska;Colo.;Maine;Mont.;N.H.;N.Y.;Oreg.;Wash.;Europe;c;n Asia.
|discussion=<p><i>Conostomum tetragonum</i> is easily recognized by its glaucous, stiffly erect leaves in five rows and apically connate peristome teeth. <i>Philonotis seriata</i> (known only from Greenland in the flora area), shares a pentastichous leaf arrangement with <i>C. tetragonum</i>, but the laminal cells of <i>P. seriata</i> are prorulose at the proximal ends and the peristome teeth are free.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Conostomum tetragonum
|author=
|authority=(Hedwig) Lindberg
|rank=species
|parent rank=genus
|synonyms=Conostomum boreale
|basionyms=Mnium tetragonum
|family=Bartramiaceae
|phenology=Capsules mature Jun–Aug.
|habitat=Thin soil, cliff ledges, among boulders, waterlogged soil of late season snow melt
|elevation=low to high elevations (0-2200 m)
|distribution=Greenland;Alta.;B.C.;N.B.;Nfld. and Labr.;N.W.T.;Nunavut;Que.;Yukon;Alaska;Colo.;Maine;Mont.;N.H.;N.Y.;Oreg.;Wash.;Europe;c;n Asia.
|reference=None
|publication title=Öfvers. Kongl. Vetensk.-Akad. Förh.
|publication year=1863
|special status=Selected by author to be illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V28/V28_151.xml
|genus=Conostomum
|species=Conostomum tetragonum
}}<!--

-->[[Category:Treatment]][[Category:Conostomum]]