View source for Brachythecium cirrosum

{{Treatment/ID
|accepted_name=Brachythecium cirrosum
|accepted_authority=(Schwagrichen) Schimper
|publications={{Treatment/Publication
|title=Syn. Musc. Eur.,
|place=696. 1860
|year=1860
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Hypnum cirrosum
|authority=Schwägrichen
|publication_title=in J. A. Schultes, Reise Glockner
|publication_place=2: 365. 1804
}}
|synonyms={{Treatment/ID/Synonym
|name=Cirriphyllum cirrosum
|authority=(Schwägrichen) Grout
}}
|hierarchy=Brachytheciaceae;Brachythecium;Brachythecium cirrosum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brachytheciaceae]]</div><div class="higher-taxon"><small>genus</small>[[Brachythecium]]</div><div class="higher-taxon"><small>species</small>[[Brachythecium cirrosum]]</div></div>
|volume=Volume 28
|mention_page=page 414, 415, 427, 428, 433
|treatment_page=page 419
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>large, occasionally small, in moderately dense mats, light green, becoming whitish stramineous or golden yellow in exposed habitats. <b>Stems</b> to 10 cm, creeping to ascending, julaceous, irregularly or rarely regularly pinnate, branches to 16 mm, straight to flexuose, julaceous. <b>Stem</b> leaves loosely appressed on proximal portions of stem, closely imbricate, ovate, broadest at 1/4–1/3(–2/5) leaf length, concave, not or slightly plicate, 2–3 × 0.6–1.2 mm; base gradually rounded, indistinctly short-decurrent; margins plane, incurved or recurved basally, entire or minutely serrulate below acumen, serrate or entire in acumen on leaves of same shoot; apex abruptly contracted, acumen filiform, long; costa to 30–60% leaf length, broad proximally, rapidly narrowing distally, sometimes shorter or 2-fid from base, terminal spine absent; alar cells subquadrate, same size as or smaller than basal cells, 13–20 µm wide, walls thick, region distinctly or indistinctly delimited, of 6–8 × 5–6 cells, opaque or moderately pellucid; laminal cells linear, 30–80(–100) × 6–7 µm; basal cells to 10–12 µm wide, walls weakly to moderately thick, region in 2 or 3 rows. <b>Branch</b> leaves similar, smaller. <b>Sexual</b> condition dioicous. <b>Seta</b> red-brown, 1.5 cm, rough. <b>Capsule</b> horizontal, red-brown, elongate, curved, 16 mm; annulus separating by fragments; operculum sharply long-conic. <b>Spores</b> 18–20 µm.</span><!--

-->{{Treatment/Body
|habitat=Wet cliffs, rock outcrops, soil in arctic and mountain tundra, among other mosses
|elevation=low to high elevations (0-4200 m)
|distribution=Greenland;Alta.;B.C.;N.W.T.;Nunavut;Yukon;Alaska;Colo.;Wyo.;Europe;Asia.
|discussion=<p><i>Brachythecium cirrosum</i> has a mainly arctic-alpine distribution, with the exception of East Asia, where it grows on trunks of evergreen trees. The species is usually unmistakable due to its strongly cirrose appearance: leaves are invariably contracted into widely spreading filiform acumina, clearly expressed in both stem and branch leaves. The alar regions reach from the margin 25–50% the distance to the costa. Distinction from 14. <i>B. brandegeei</i> and <i>Cirriphyllum piliferum</i> is discussed under these other species.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Brachythecium cirrosum
|author=
|authority=(Schwagrichen) Schimper
|rank=species
|parent rank=genus
|synonyms=Cirriphyllum cirrosum
|basionyms=Hypnum cirrosum
|family=Brachytheciaceae
|habitat=Wet cliffs, rock outcrops, soil in arctic and mountain tundra, among other mosses
|elevation=low to high elevations (0-4200 m)
|distribution=Greenland;Alta.;B.C.;N.W.T.;Nunavut;Yukon;Alaska;Colo.;Wyo.;Europe;Asia.
|reference=None
|publication title=Syn. Musc. Eur.,
|publication year=1860
|special status=Selected by author to be illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V28/V28_649.xml
|genus=Brachythecium
|species=Brachythecium cirrosum
}}<!--

-->[[Category:Treatment]][[Category:Brachythecium]]