View source for Pleuroziopsis ruthenica

{{Treatment/ID
|accepted_name=Pleuroziopsis ruthenica
|accepted_authority=(Weinmann) Kindberg ex E. Britton
|publications={{Treatment/Publication
|title=Bryologist
|place=9: 39. 1906
|year=1906
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}
|basionyms={{Treatment/ID/Synonym
|name=Hypnum ruthenicum
|authority=Weinmann
}}
|synonyms={{Treatment/ID/Synonym
|name=Girgensohnia ruthenica
|authority=(Weinmann) Kindberg
}}
|hierarchy=Pleuroziopsaceae;Pleuroziopsis;Pleuroziopsis ruthenica
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Pleuroziopsaceae]]</div><div class="higher-taxon"><small>genus</small>[[Pleuroziopsis]]</div><div class="higher-taxon"><small>species</small>[[Pleuroziopsis ruthenica]]</div></div>
|volume=Volume 28
|mention_page=page 318, 514
|treatment_page=page 513
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>light green, frondose-dendroid. <b>Stems</b> with primary stems stoloniferous, branches 1.5–3 cm, attenuate, branchlets 4–7 mm, attenuate; lamellae apical cells round, elliptic, square, or rectangular. <b>Stem</b> leaves clasping, ovate, smooth or wrinkled; base long-decurrent, 1-stratose; apex apiculate or obtuse to acute; medial laminal cells vermicular, 40–81 × 5–7 µm. <b>Proximal</b> branch leaves gradually grading distally into leaves similar to branchlet leaves; median branchlet leaves plicate; base long-decurrent; margins plane or narrowly recurved near base, serrate to entire proximally, irregularly and strongly toothed to serrate distally; apex broadly acute; medial laminal cells 28–45 × 5–7 µm. <b>Sexual</b> condition dioicous; archegonial and antheridial plants similar, perigonial and perichaetial buds on stem near branches; perigonial leaves broadly ovate, acute; perichaetial leaves ovate, apex acute to acuminate. <b>Seta</b> smooth. <b>Capsule</b> red, not contracted below mouth. <b>Calyptra</b> cucullate, covering 1/2 capsule.</span><!--

-->{{Treatment/Body
|habitat=Humus on ground or logs along creeks and rivers, moist, shaded habitats
|elevation=low to moderate elevations (10-600 m)
|distribution=B.C.;Alaska;Wash.;e Asia.
|discussion=<p><i>Pleuroziopsis ruthenica</i> is a distinctive species, somewhat reminiscent of <i>Climacium</i>; both have erect secondary stems arising from a creeping primary stem and occur in wet habitats. <i>Pleuroziopsis</i> is lighter green and more slender in appearance, with a frondose-dendroid habit, an ovoid, arcuate, cernuous capsule with a hypnaceous peristome and exostome teeth with fine cross striolations; <i>Climacium</i> has a coarser dendroid habit and a cylindric, straight, erect capsule with narrow, densely papillose endostome segments. Another important feature distinguishing <i>Pleuroziopsis</i> from <i>Climacium</i> is the nature of branching. In <i>Pleuroziopsis</i>, the plants are erect from a creeping primary stem, as in <i>Climacium</i>, but they are also frondose-dendroid, that is, they are flattened and the secondary and tertiary branches are divided, often several times, so the plants are noticeably frondose. In <i>Climacium</i>, the plants are not flattened; the branches arise around the distal end of the erect secondary stem and seldom, if ever, produce branchlets.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Pleuroziopsis ruthenica
|author=
|authority=(Weinmann) Kindberg ex E. Britton
|rank=species
|parent rank=genus
|synonyms=Girgensohnia ruthenica
|basionyms=Hypnum ruthenicum
|family=Pleuroziopsaceae
|habitat=Humus on ground or logs along creeks and rivers, moist, shaded habitats
|elevation=low to moderate elevations (10-600 m)
|distribution=B.C.;Alaska;Wash.;e Asia.
|reference=None
|publication title=Bryologist
|publication year=1906
|special status=Selected by author to be illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V28/V28_798.xml
|genus=Pleuroziopsis
|species=Pleuroziopsis ruthenica
}}<!--

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