View source for Ptychostomum acutiforme

{{Treatment/ID
|accepted_name=Ptychostomum acutiforme
|accepted_authority=(Limpricht) J. R. Spence
|publications={{Treatment/Publication
|title=Phytologia
|place=89: 113. 2007
|year=2007
}}
|basionyms={{Treatment/ID/Synonym
|name=Bryum acutiforme
|authority=Limpricht
}}
|synonyms=
|hierarchy=Bryaceae;Ptychostomum;Ptychostomum subg. Ptychostomum;Ptychostomum acutiforme
|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 acutiforme]]</div></div>
|volume=Volume 28
|mention_page=page 167, 169
|treatment_page=page 168
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>in dense or open turfs, green, yellow-green, or brown. <b>Stems</b> 1–2 cm, fertile stems comose, innovations evenly foliate. <b>Leaves</b> yellow-green to yellow-brown, somewhat distant, weakly contorted to somewhat imbricate when dry, ovate-lanceolate, concave or sometimes flat, 0.5–2(–3) mm, enlarged toward stem apex; base red near costa, green otherwise, not decurrent; margins plane, limbidium moderately strong, in (1–)2–3 rows; apex acute to acuminate; costa not reaching apex to percurrent, apiculus sometimes present, short, slender; proximal laminal cells long-rectangular, (3–)4–5:1; medial cells somewhat longer, walls incrassate; distal cells 18–25 µm wide, 2–3:1, walls thin to incrassate. <b>Specialized</b> asexual reproduction absent. <b>Sexual</b> condition autoicous. <b>Seta</b> red-brown, 2–4 cm, stout, straight to somewhat flexuose. <b>Capsule</b> red-brown or red, ovate, symmetric, 2–3 mm, mouth yellow to yellow-orange; operculum conic, apiculate; peristome reduced; exostome teeth yellow basally, hyaline distally, lamellae ± straight mid tooth, pores absent along mid line; endostome not adherent to exostome, basal membrane less than 1/2 exostome height, segments with lanceolate to slitlike perforations, cilia absent or rudimentary. <b>Spores</b> with size often variable in same capsule, 28–32 µm, yellow or brown.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature Jul–Aug.
|habitat=Moist gravelly to sandy soil, near sea, along streams, around lakes
|elevation=low to moderate elevations (0-600 m)
|distribution=Greenland;Nfld. and Labr.;N.W.T.;Nunavut;Alaska;n Eurasia.
|discussion=<p><i>Ptychostomum acutiforme</i> is related to <i>P. calophyllum</i>, but differs in its ovate-lanceolate leaves with acuminate apices. The leaves have red to red-brown costae and proximal laminal cells narrower than the more distal cells. The hypophysis is thick and abruptly contracted to the seta.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Ptychostomum acutiforme
|author=
|authority=(Limpricht) J. R. Spence
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=Bryum acutiforme
|family=Bryaceae
|phenology=Capsules mature Jul–Aug.
|habitat=Moist gravelly to sandy soil, near sea, along streams, around lakes
|elevation=low to moderate elevations (0-600 m)
|distribution=Greenland;Nfld. and Labr.;N.W.T.;Nunavut;Alaska;n Eurasia.
|reference=None
|publication title=Phytologia
|publication year=2007
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V28/V28_266.xml
|genus=Ptychostomum
|subgenus=Ptychostomum subg. Ptychostomum
|species=Ptychostomum acutiforme
}}<!--

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