View source for Mnium spinosum

{{Treatment/ID
|accepted_name=Mnium spinosum
|accepted_authority=(Voit) Schwagrichen
|publications={{Treatment/Publication
|title=Sp. Musc. Frond. Suppl.
|place=1(2): 130. 1816
|year=1816
}}
|basionyms={{Treatment/ID/Basionym
|name=Bryum spinosum
|authority=Voit
|rank=species
|publication_title=in J. Sturm et al., Deutschl. Fl.
|publication_place=2(11): [16], plate s.n. 1811
}}
|synonyms=
|hierarchy=Mniaceae;Mnium;Mnium spinosum
|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 spinosum]]</div></div>
|volume=Volume 28
|mention_page=page 224
|treatment_page=page 227
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>3.5–6(–8) cm. <b>Stems</b> red or reddish brown. <b>Leaves</b> green to dark green, crisped or undulate, twisted when dry, elliptic, ovate-elliptic, oblong-ovate, or rarely obovate, rarely narrow, 4–6 mm, proximal stem leaves narrowly triangular; base long-decurrent; margins reddish brown, multistratose with stereid band, toothed to below mid leaf, teeth paired, large, sharp; apex acute or rounded-acute, cuspidate or sometimes apiculate, cusp toothed; costa percurrent or excurrent, distal abaxial surface toothed, adaxial surface rarely toothed; medial laminal cells elongate, (20–)25–40 µm, slightly smaller towards margins, in diagonal or weak longitudinal rows, not or weakly collenchymatous, blue postmortal color absent; marginal cells linear, in (2–)3–4 rows. <b>Sexual</b> condition dioicous. [Seta single to several. <b>Capsule</b> yellow-brown, 1.5–2.5 mm; operculum rostrate; exostome light brown. <b>Spores</b> 20–32 µm].</span><!--

-->{{Treatment/Body
|phenology=Capsules mature late spring.
|habitat=Forests on humus, soil
|elevation=low to moderate (high) elevations
|distribution=Greenland;B.C.;N.W.T.;Yukon;Alaska;Colo.;Europe;Asia.
|discussion=<p>Well-developed leaves of <i>Mnium spinosum</i>, a northern species, are characterized by long, sharp, and often highly divergent marginal teeth, present to well below mid leaf. The longer leaves and the angular, not or weakly collenchymatous laminal cells separate this species from <i>M. lycopodioides</i> and <i>M. marginatum</i>. Sporophytes have not been observed in North American collections. Characteristics of the sporophyte that are presented here are taken from A. J. E. Smith (2004).</p>
|tables=
|references={{Treatment/Reference
|id=steere1973b
|text=Steere, W. C. 1973b. The occurrence of Mnium spinosum in North America. Bryologist 76: 430–434.
}}
}}<!--

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-->{{#Taxon:
name=Mnium spinosum
|authority=(Voit) Schwagrichen
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Bryum spinosum
|family=Mniaceae
|phenology=Capsules mature late spring.
|habitat=Forests on humus, soil
|elevation=low to moderate (high) elevations
|distribution=Greenland;B.C.;N.W.T.;Yukon;Alaska;Colo.;Europe;Asia.
|reference=steere1973b
|publication title=Sp. Musc. Frond. Suppl.
|publication year=1816
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_361.xml
|genus=Mnium
|species=Mnium spinosum
}}<!--

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