View source for Mnium thomsonii

{{Treatment/ID
|accepted_name=Mnium thomsonii
|accepted_authority=Schimper
|publications={{Treatment/Publication
|title=Syn. Musc. Eur. ed.
|place=2, 485. 1876
|year=1876
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}
|basionyms=
|synonyms=
|hierarchy=Mniaceae;Mnium;Mnium thomsonii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Mniaceae]]</div><div class="higher-taxon"><small>genus</small>[[Mnium]]</div><div class="higher-taxon"><small>species</small>[[Mnium thomsonii]]</div></div>
|volume=Volume 28
|mention_page=page 223, 224
|treatment_page=page 228
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>1–2(–7) cm. <b>Stems</b> reddish brown or red. <b>Leaves</b> green to yellow-green, crisped and somewhat coiled around stem, slightly undulate or contorted when dry, elliptic-lanceolate, elliptic, ovate, or ovate-lanceolate, 1.5–3(–4.5) mm; base long-decurrent; margins green, occasionally brownish or reddish brown, 2-stratose, toothed to below mid leaf, teeth variable, paired or sometimes single, small, sharp or blunt; apex acute, rounded-acute, or obtuse, apiculate or cuspidate, cusp weakly toothed or smooth, occasionally ending in long terminal cell; costa percurrent, sometimes excurrent or subpercurrent, distal abaxial surface lightly toothed or sometimes smooth; medial laminal cell shape variable, ± isodiametric or slightly elongate, (10–)14–22(–25) µm, slightly smaller towards margins, in longitudinal, rarely diagonal rows, not or weakly collenchymatous, blue postmortal color absent; marginal cells linear, in (1–)2–3(–4) rows. <b>Sexual</b> condition dioicous. <b>Seta</b> single. <b>Capsule</b> yellow-brown or brown, 2–5 mm; operculum rostrate; exostome greenish yellow. <b>Spores</b> 20–40 µm.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature summer.
|habitat=Calciphile, moist rock, soil, bark, along streams
|elevation=low to high elevations
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;Que.;Yukon;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;Fla.;Ill.;Ky.;Maine;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Oreg.;Pa.;S.Dak.;Vt.;Va.;Wash.;Wyo.;Europe;Asia.
|discussion=<p>Mnium thomsonii is morphologically variable, especially in leaf shape, degree and type of marginal toothing, and costal length and toothing. Small plants often lack costal teeth and margins can be nearly smooth. However, the small laminal cells, the smallest in the genus, are diagnostic. The name M. orthorrhychum Müller Hal., often used for this taxon, is an illegitimate homonym (T. J. Koponen 1972).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Mnium thomsonii
|author=
|authority=Schimper
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Mniaceae
|phenology=Capsules mature summer.
|habitat=Calciphile, moist rock, soil, bark, along streams
|elevation=low to high elevations
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;Que.;Yukon;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;Fla.;Ill.;Ky.;Maine;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Oreg.;Pa.;S.Dak.;Vt.;Va.;Wash.;Wyo.;Europe;Asia.
|reference=None
|publication title=Syn. Musc. Eur. ed.
|publication year=1876
|special status=Selected by author to be illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V28/V28_364.xml
|genus=Mnium
|species=Mnium thomsonii
}}<!--

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