View source for Ptychostomum pallescens

{{Treatment/ID
|accepted_name=Ptychostomum pallescens
|accepted_authority=(Schleicher ex Schwagrichen) J. R. Spence
|publications={{Treatment/Publication
|title=Phytologia
|place=87: 21. 2005
|year=2005
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Bryum pallescens
|authority=Schleicher ex Schwägrichen
|publication_title=Sp. Musc. Fond. Suppl.
|publication_place=1(2): 107, plate 75 [right]. 1816
}}
|synonyms=
|hierarchy=Bryaceae;Ptychostomum;Ptychostomum subg. Cladodium;Ptychostomum pallescens
|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. Cladodium]]</div><div class="higher-taxon"><small>species</small>[[Ptychostomum pallescens]]</div></div>
|volume=Volume 28
|mention_page=page 156, 160, 165
|treatment_page=page 162
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>in dense or open turfs, green or yellow-green. <b>Stems</b> 1–3(–4) cm, comose, innovations comose or somewhat elongate and evenly foliate; somewhat radiculose. <b>Leaves</b> green, twisted to contorted when dry, ovate-lanceolate, flat to weakly concave, (1–)2–3(–3.5) mm, somewhat enlarged toward stem apex; base weakly decurrent; margins revolute to mid leaf or beyond, limbidium strong, in 2 or 3 rows; apex acuminate; costa long-excurrent, awn ± smooth; proximal laminal cells 3–4:1, same width or sometimes wider than more distal cells; medial and distal cells rhomboidal, 14–22 µm wide, 3–4:1, walls usually thin to firm. <b>Specialized</b> asexual reproduction absent. <b>Sexual</b> condition autoicous. <b>Seta</b> 1–2(–3) cm. <b>Capsule</b> brown, elongate-pyriform, symmetric, 2–4 mm, mouth yellow; operculum conic, apiculate; peristome well developed; exostome teeth yellow basally, hyaline distally, lamellae usually straight mid tooth, pores absent along mid line; endostome not adherent to exostome, basal membrane high, 1/2 exostome height, segments with elongate oval perforations, cilia long, appendiculate to nodose. <b>Spores</b> 18–22 µm, finely papillose, pale brown-yellow or green.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature May–Aug.
|habitat=Damp to wet soil
|elevation=low to high elevations (0-3300 m)
|distribution=Greenland;Alta.;B.C.;Man.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Maine;Mass.;Mich.;Minn.;Mo.;Mont.;Nev.;N.H.;N.Dak.;Ohio;Oreg.;Pa.;S.Dak.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;South America;Eurasia;Pacific Islands (New Zealand).
|discussion=<p><i>Ptychostomum pallescens</i> is a common widespread boreal-temperate species favoring wet soil in wetlands, along streams, and in springs. The costal awns are pigmented. <i>Ptychostomum creberrimum</i> is similar, but has smaller spores, synoicous sexual condition, and ovate segment perforations.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Ptychostomum pallescens
|author=
|authority=(Schleicher ex Schwagrichen) J. R. Spence
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=Bryum pallescens
|family=Bryaceae
|phenology=Capsules mature May–Aug.
|habitat=Damp to wet soil
|elevation=low to high elevations (0-3300 m)
|distribution=Greenland;Alta.;B.C.;Man.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Maine;Mass.;Mich.;Minn.;Mo.;Mont.;Nev.;N.H.;N.Dak.;Ohio;Oreg.;Pa.;S.Dak.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;South America;Eurasia;Pacific Islands (New Zealand).
|reference=None
|publication title=Phytologia
|publication year=2005
|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_259.xml
|genus=Ptychostomum
|subgenus=Ptychostomum subg. Cladodium
|species=Ptychostomum pallescens
}}<!--

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