View source for Ptilium ← Ptilium You do not have permission to edit this page, for the following reason: The action you have requested is limited to users in the group: Users. You can view and copy the source of this page. {{Treatment/ID |accepted_name=Ptilium |accepted_authority=De Notaris |publications={{Treatment/Publication |title=Comment. Soc. Crittog. Ital. |place=2: 283. 1867 |year=1867 }} |basionyms= |synonyms= |hierarchy=Hypnaceae;Ptilium |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hypnaceae]]</div><div class="higher-taxon"><small>genus</small>[[Ptilium]]</div></div> |etymology=Greek ptilon, feather, alluding to plumelike habit |volume=Volume 28 |mention_page=page 516, 563, 644 |treatment_page=page 562 }}<!-- --><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>large, in loose mats, dark green to golden, shiny. <b>Stems</b> suberect to ascending, forming fronds, regularly pinnate; hyalodermis absent, central strand present, weak; pseudoparaphyllia foliose. <b>Stem</b> and branch leaves differentiated. <b>Stem</b> leaves squarrose, broadly ovate, widest beyond base, strongly plicate; base not decurrent; margins plane, sharply serrulate distally; apex acuminate; ecostate or costa short, double; alar cells differentiated, rectangular or quadrate; laminal cells smooth; distal cells usually longer than 6:1. <b>Branch</b> leaves usually circinate-secund, pointing toward base (not underside) of main shoot, oblong-lanceolate, tapering to apex, plicate, 1–2 mm; costa double, short; laminal cells long-linear. <b>Specialized</b> asexual reproduction absent. <b>Sexual</b> condition dioicous; perichaetial leaves lanceolate, apex subulate. <b>Seta</b> red-brown. <b>Capsule</b> horizontal, cylindric, arcuate, contracted below mouth; annulus narrow; operculum long-conic; peristome double; exostome teeth striolate basally, papillose distally; endostome basal membrane broad, segments broad, keeled, cilia 2 or 3, nearly as long as segments. <b>Calyptra</b> naked. <b>Spores</b> spheric, smooth to finely papillose.</span><!-- -->{{Treatment/Body |distribution=North America;Europe;Asia;terrestrial habitats in temperate;boreal;and subarctic regions. |discussion=<p>Species 1.</p><!-- --><p><i>Ptilium</i> is a remarkably elegant genus that is usually easily distinguished from <i>Hypnum</i>, as the plants have extremely plicate circinate leaves that curve proximally, toward the base of the main stem, not ventrally to the underside of the stem as those in <i>Hypnum</i>. The exostome teeth are red-brown and lanceolate; the endostome is pale yellow.</p> |tables= |references= }}<!-- --><!-- -->{{#Taxon: name=Ptilium |author=Wilfred B. Schofield† |authority=De Notaris |rank=genus |parent rank=family |synonyms= |basionyms= |family=Hypnaceae |distribution=North America;Europe;Asia;terrestrial habitats in temperate;boreal;and subarctic regions. |reference=None |publication title=Comment. Soc. Crittog. Ital. |publication year=1867 |special status= |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_877.xml |genus=Ptilium }}<!-- -->[[Category:Treatment]][[Category:Hypnaceae]] Templates used on this page: Template:Hypnaceae (view source) Template:Treatment/AuthorLink (view source) Template:Treatment/Body (view source) Template:Treatment/Body/Maps (view source) Template:Treatment/ID (view source) Template:Treatment/Publication (view source) Return to Ptilium.