View source for Ptychostomum cyclophyllum

{{Treatment/ID
|accepted_name=Ptychostomum cyclophyllum
|accepted_authority=(Schwagrichen) J. R. Spence
|publications={{Treatment/Publication
|title=Phytologia
|place=87: 20. 2005
|year=2005
}}
|basionyms={{Treatment/ID/Basionym
|name=Mnium cyclophyllum
|authority=Schwägrichen
|rank=species
|publication_title=Sp. Musc. Frond. Suppl.
|publication_place=2(2,2): 160, plate 194 [bottom]. 1827
}}
|synonyms={{Treatment/ID/Synonym
|name=Bryum cyclophyllum
|authority=(Schwägrichen) Bruch & Schimper
|rank=species
}} {{Treatment/ID/Synonym
|name=B. tortifolium
|authority=Bridel
|rank=species
}}
|hierarchy=Bryaceae;Ptychostomum;Ptychostomum subg. Ptychostomum;Ptychostomum cyclophyllum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Bryaceae]]</div><div class="higher-taxon"><small>genus</small>[[Ptychostomum]]</div><div class="higher-taxon"><small>subgenus</small>[[Ptychostomum subg. Ptychostomum]]</div><div class="higher-taxon"><small>species</small>[[Ptychostomum cyclophyllum]]</div></div>
|volume=Volume 28
|mention_page=page 165, 166, 167, 175
|treatment_page=page 171
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>in dense or open turfs, green or yellow-green. <b>Stems</b> 0.5–3(–4) cm, fertile stems comose, innovations evenly foliate. <b>Leaves</b> green, somewhat distant, strongly contorted to shrunken when dry, broadly ovate to orbicular, flat or weakly concave, 0.5–3 mm, not much enlarged toward stem apex; base green, weakly decurrent; margins plane, limbidium strong, in 2 or 3 rows; apex broadly acute to obtuse; costa not reaching apex, rarely nearly percurrent, apiculus absent; proximal laminal cells long-rectangular, 3–5:1; medial and distal cells 18–24 µm wide, 2–3:1, walls thin. <b>Specialized</b> asexual reproduction rare, by leaf axil gemmae, brown, finely papillose. <b>Sexual</b> condition dioicous. <b>Seta</b> red or brown, 2–4(–5) cm, slender, straight to somewhat flexuose. <b>Capsule</b> yellow-brown to brown, obovate, symmetric, 2–4 mm, mouth yellow; operculum short-conic, weakly apiculate; peristome well developed; exostome teeth yellow basally, hyaline distally, lamellae straight, pores absent near base along mid line; endostome not adherent to exostome, basal membrane 1/2 exostome height, segments with ovate perforations, cilia long, appendiculate. <b>Spores</b> 14–16 µm, smooth or finely papillose, pale yellow.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature Jun–Sep.
|habitat=Wet sandy or organic soil, along streams, wetlands
|elevation=low to high elevations (0-3000 m)
|distribution=Greenland;Alta.;B.C.;Nfld. and Labr.;N.W.T.;Nunavut;Yukon;Alaska;Ariz.;Calif.;Colo.;Mich.;Mont.;N.J.;N.Mex.;N.Y.;Utah;Wash.;Wyo.;Asia (India;Nepal).
|discussion=<p><i>Ptychostomum cyclophyllum</i> is a distinctive arctic-boreal species with broadly ovate to orbicular, blunt, more or less flat leaves that are strongly shrunken when dry. <i>Ptychostomum neodamense</i> and <i>P. subneodamense</i> are similar, but have much shorter proximal laminal cells, 1-stratose borders, and red leaf bases. The occurrence of <i>P. cyclophyllum</i> has probably declined in the United States, as the plants grow in wetlands and along streams in mid elevation regions, areas where human development is often concentrated.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Ptychostomum cyclophyllum
|authority=(Schwagrichen) J. R. Spence
|rank=species
|parent rank=subgenus
|synonyms=Bryum cyclophyllum;B. tortifolium
|basionyms=Mnium cyclophyllum
|family=Bryaceae
|phenology=Capsules mature Jun–Sep.
|habitat=Wet sandy or organic soil, along streams, wetlands
|elevation=low to high elevations (0-3000 m)
|distribution=Greenland;Alta.;B.C.;Nfld. and Labr.;N.W.T.;Nunavut;Yukon;Alaska;Ariz.;Calif.;Colo.;Mich.;Mont.;N.J.;N.Mex.;N.Y.;Utah;Wash.;Wyo.;Asia (India;Nepal).
|reference=None
|publication title=Phytologia
|publication year=2005
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V28/V28_271.xml
|genus=Ptychostomum
|subgenus=Ptychostomum subg. Ptychostomum
|species=Ptychostomum cyclophyllum
}}<!--

-->[[Category:Treatment]][[Category:Ptychostomum subg. Ptychostomum]]