View source for Didymodon umbrosus

{{Treatment/ID
|accepted_name=Didymodon umbrosus
|accepted_authority=(Müller Hal.) R. H. Zander
|publications={{Treatment/Publication
|title=Phytologia
|place=41: 22. 1978,
}}
|basionyms={{Treatment/ID/Basionym
|name=Barbula umbrosa
|authority=Müller Hal.
|rank=species
|publication_title=Linnaea
|publication_place=42: 340. 1879
}}
|synonyms={{Treatment/ID/Synonym
|name=Didymodon australasiae var. umbrosus
|authority=(Müller Hal.) R. H. Zander
|rank=variety
}} {{Treatment/ID/Synonym
|name=Trichostomopsis crispifolia
|authority=(Müller Hal.) H. Robinson
|rank=species
}} {{Treatment/ID/Synonym
|name=Trichostomopsis umbrosa
|authority=
|rank=species
}}
|hierarchy=Pottiaceae;Pottiaceae subfam. Barbuloideae;Didymodon;Didymodon umbrosus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Pottiaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Pottiaceae subfam. Barbuloideae]]</div><div class="higher-taxon"><small>genus</small>[[Didymodon]]</div><div class="higher-taxon"><small>species</small>[[Didymodon umbrosus]]</div></div>
|volume=Volume 27
|mention_page=page 539, 543, 548
|treatment_page=page 547
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>usually green to very bright green distally, contrasting with light tan proximally. <b>Stems</b> to 1(–1.5) cm, central strand present. <b>Stem</b> leaves spreading-incurved and twisted to incurved-appressed when dry, spreading to spreading-recurved and not keeled when moist, monomorphic, long-lanceolate, broadly concave adaxially across leaf, usually 1–2.5(–4) mm, base sharply differentiated in shape, ovate, margins usually plane, entire, apex narrowly acute, not fragile; costa percurrent or ending a few cells below the apex, broader at mid leaf, occasionally weakly spurred, with a low adaxial pad of cells, adaxial costal cells rectangular, 4–6 cells wide at mid leaf, guide cells in 1–2 layers; basal laminal cells strongly differentiated medially, rectangular, walls very thin or hyaline, often perforated by transverse slits; distal laminal cells in rather distinct rows, 7–12 wide, 1:1 or occasionally longitudinally elongate, papillae usually absent, lumens oval to rounded-quadrate or rounded-rectangular, walls convex on both sides of lamina, 2-stratose in one or more rows along margins. <b>Specialized</b> asexual reproduction by multicellular tubers on proximal rhizoids. <b>Seta</b> 0.7–1 cm. <b>Capsule</b> 1–1.9 mm; peristome teeth 32, linear, weakly twisted, to 600 µm. <b>Spores</b> 11–15 µm. <b>Distal</b> laminal KOH reaction variously negative or yellow- or orange- or red-brown.</span><!--

-->{{Treatment/Body
|phenology=Capsules maturity not determined.
|habitat=Soil, lava, dolomite, cliff face, rock
|elevation=moderate to high elevations (200-1900 m)
|distribution=Calif.;N.Mex.;N.Y.;Tex.;Mexico;South America;Europe.
|discussion=<p><i>Didymodon umbrosus</i> is one of a number of mundivagant taxa whose distribution is associated with human activities (P. M. Eckel 1986). The proximal marginal cells are elongate and in distinctive rows. The transversely slit basal cells are distinctive in many specimens though also found in taxa of the Dicranaceae (R. H. Zander 1981b), some of which may belong in <i>Pottiaceae</i> (O. Werner et al. 2004).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Didymodon umbrosus
|authority=(Müller Hal.) R. H. Zander
|rank=species
|parent rank=genus
|synonyms=Didymodon australasiae var. umbrosus;Trichostomopsis crispifolia;Trichostomopsis umbrosa
|basionyms=Barbula umbrosa
|family=Pottiaceae
|phenology=Capsules maturity not determined.
|habitat=Soil, lava, dolomite, cliff face, rock
|elevation=moderate to high elevations (200-1900 m)
|distribution=Calif.;N.Mex.;N.Y.;Tex.;Mexico;South America;Europe.
|reference=None
|publication title=Phytologia
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V27/V27_784.xml
|subfamily=Pottiaceae subfam. Barbuloideae
|genus=Didymodon
|species=Didymodon umbrosus
}}<!--

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