View source for Mnium arizonicum

{{Treatment/ID
|accepted_name=Mnium arizonicum
|accepted_authority=J. J. Amann
|publications={{Treatment/Publication
|title=Rev. Bryol.
|place=52: 23. 1925
|year=1925
}}
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms=
|hierarchy=Mniaceae;Mnium;Mnium arizonicum
|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 arizonicum]]</div></div>
|volume=Volume 28
|mention_page=page 223
|treatment_page=page 224
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>1–2(–4) cm. <b>Stems</b> reddish brown or dark red. <b>Leaves</b> pale to dark green, usually contorted and spirally twisted when dry, obovate, elliptic, or sometimes obovate-spatulate, 2.5–3.5(–4.5) mm; base short- or rarely long-decurrent; margins green, 1- or 2-stratose, toothed in distal 1/3 of leaf, rarely to below mid leaf or entire, teeth paired or single, small, blunt, sometimes indistinct, occasionally long and sharp; apex acute or rounded-acute, apiculate or rarely cuspidate, cusp toothed; costa percurrent or occasionally subpercurrent, distal abaxial surface smooth or toothed; medial laminal cells elongate or sometimes oblong, (20–)25–40(–50) µm, smaller near margins, in diagonal, sometimes longitudinal rows, weakly or not collenchymatous, walls pitted, blue postmortal color absent; marginal cells short-linear or rhomboidal, sometimes mixed with linear cells, in 2 or 3 rows. <b>Sexual</b> condition dioicous. <b>Seta</b> single. <b>Capsule</b> yellow-brown, 2–3(–4) mm; operculum rostrate, rostrum strongly bent when dry; exostome brown, sometimes dark reddish brown. <b>Spores</b> 15–24 µm.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature summer.
|habitat=Damp soil, humus, rock, shaded cliffs
|elevation=low to high elevations
|distribution=Greenland;Alta.;B.C.;N.W.T.;Nunavut;Yukon;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Mex.;S.Dak.;Utah;Wyo.
|discussion=<p><i>Mnium arizonicum</i> is distinguished by its small size, elongate and pitted laminal cells (this is the only species of <i>Mnium</i> with pitted cell walls) often in distinct rows, and leaf margins composed in large part of short-linear and oblong cells with small, often single and blunt teeth. S. Flowers (1973) observed that the marginal teeth can vary widely on leaves of a single shoot, with some leaves entire and others with paired teeth.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Mnium arizonicum
|authority=J. J. Amann
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Mniaceae
|phenology=Capsules mature summer.
|habitat=Damp soil, humus, rock, shaded cliffs
|elevation=low to high elevations
|distribution=Greenland;Alta.;B.C.;N.W.T.;Nunavut;Yukon;Ariz.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Mex.;S.Dak.;Utah;Wyo.
|reference=None
|publication title=Rev. Bryol.
|publication year=1925
|special status=Endemic;Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V28/V28_356.xml
|genus=Mnium
|species=Mnium arizonicum
}}<!--

-->[[Category:Treatment]][[Category:Mnium]]