View source for Didymodon bistratosus

{{Treatment/ID
|accepted_name=Didymodon bistratosus
|accepted_authority=Hébrard & R. B. Pierrot
|publications={{Treatment/Publication
|title=Nova Hedwigia
|place=59: 354, figs 1–25. 1994,
}}
|basionyms=
|synonyms=
|hierarchy=Pottiaceae;Pottiaceae subfam. Barbuloideae;Didymodon;Didymodon bistratosus
|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 bistratosus]]</div></div>
|volume=Volume 27
|mention_page=page 543
|treatment_page=page 561
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>deep green distally, strongly reddish brown proximally. <b>Stems</b> to 0.2 cm, central strand present. <b>Stem</b> leaves appressed weakly twisted clockwise or occasionally counterclockwise when dry, spreading and weakly reflexed above the base when moist; monomorphic, long-ovate to ellipticlanceolate, adaxial surface broadly channeled at midleaf, concave to occasionally somewhat naviculate apically, usually 1–1.2 mm, base weakly differentiated, ovate; margins plane above, recurved below, entire; apex obtuse or acute, occasionally ending in a short, clear, sharp cell; costa percurrent, broad, lacking an adaxial pad of cells, adaxial cells quadrate-hexagonal, papillose, in 6–8 rows at mid leaf, guide cells in 1 layer; basal cells weakly differentiated in small area juxtacostally, very shortrectangular, walls evenly thickened and not perforated; roundedquadrate, 7–10 mm in width, 1:1, papillae low, fused to a thickened and irregularly shaped lens covering lumen, cell walls evenly thickened, weakly bulging on both sides of lamina, 2(–3)-stratose. <b>Specialized</b> asexual reproduction not seen. <b>Seta</b> 0.9–1.3 cm. <b>Capsule</b> 1.2–1.7 mm; peristome teeth 32, linear, twisted about once counterclockwise, to 700 µm. <b>Spores</b> 8–10 µm. <b>Distal</b> laminal KOH reaction red.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature spring (Apr).
|habitat=Sandstone, concrete
|elevation=moderate elevations (300 m)
|distribution=Calif.;Europe (Spain).
|discussion=<p><i>Didymodon bistratosus</i> differs from the similar <i>D. australasiae</i> in the strongly bicolorous habit, deep green above and dense red below and the bistratose and occasionally marginally tristratose distal lamina. <i>Didymodon rigidulus </i>var.<i> subulatus</i> and <i>D. nicholsonii</i> are similar in the bistratose upper lamina but both have lanceolate leaves and robust stereid bands. <i>Bryoerythrophyllum columbianum</i> also has much the same reddish appearance, short leaf shape, and has a similarly broad upper costa, but the lamina is unistratose and the leaf apex of <i>B. columbianum</i> is sharply mucronate, rigid, fragile, and comprised of elongate cells.</p>
|tables=
|references={{Treatment/Reference
|id=zander2005b
|text=Zander, R. H., J. A. Jiménez, and T. Sagar. 2005. Didymodon bistratosus (Pottiaceae, Bryopsida) in the New World. Bryologist 108: 540–543.
}}
}}<!--

--><!--

-->{{#Taxon:
name=Didymodon bistratosus
|author=
|authority=Hébrard & R. B. Pierrot
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Pottiaceae
|phenology=Capsules mature spring (Apr).
|habitat=Sandstone, concrete
|elevation=moderate elevations (300 m)
|distribution=Calif.;Europe (Spain).
|reference=zander2005b
|publication title=Nova Hedwigia
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V27/V27_807.xml
|subfamily=Pottiaceae subfam. Barbuloideae
|genus=Didymodon
|species=Didymodon bistratosus
}}<!--

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