View source for Hypnum holmenii

{{Treatment/ID
|accepted_name=Hypnum holmenii
|accepted_authority=Ando
|publications={{Treatment/Publication
|title=Hikobia
|place=11: 365, figs. 2, 3. 1994
|year=1994
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Stereodon holmenii
|authority=(Ando) Ignatov & Ignatova
|rank=species
}}
|hierarchy=Hypnaceae;Hypnum;Hypnum holmenii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hypnaceae]]</div><div class="higher-taxon"><small>genus</small>[[Hypnum]]</div><div class="higher-taxon"><small>species</small>[[Hypnum holmenii]]</div></div>
|volume=Volume 28
|mention_page=page 533, 545, 548
|treatment_page=page 542
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>small, pale green to yellow-green. <b>Stems</b> 4–6 cm, yellowish, ascending to procumbent, regularly to irregularly and densely pinnate, branches 1 cm; hyalodermis present, central strand weak; pseudoparaphyllia foliose, lanceolate. <b>Stem</b> and branch leaves falcate-secund, broadly ovate-lanceolate, curved to insertion (sometimes markedly), gradually narrowed to apex, 1.4–1.6 × 0.5–0.6 mm; base not decurrent; margins plane, serrulate distally; acumen slender; costa double, short; alar cells subquadrate to rectangular, gradually enlarged, region distinct, outermost cell walls thinner, basalmost cells hyaline, walls thinner, cells often tearing away with enlarged stem cortical cells; basal laminal cells shorter, wider than medial cells, yellowish or unpigmented, walls thickened; medial cells (50–)60–80 × 3–4 µm. <b>Sexual</b> condition dioicous or phyllodioicous; inner perichaetial leaves oblong-lanceolate, margins serrulate distally, apex slender, costa obscure. <b>Seta</b> pale reddish, 1.5–2.2 cm. <b>Capsule</b> inclined to horizontal, red-brown, oblong-cylindric, 1.5–1.8 mm; annulus 1- or 2-seriate; operculum conic; endostome cilia 2 or 3.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature Jul–Aug.
|habitat=Moist heaths, shrub thickets, spruce forests, calcareous substrates
|elevation=low to moderate elevations (0-1500 m)
|distribution=Greenland;Alta.;B.C.;N.W.T.;Nunavut;Yukon;Europe (Finland).
|discussion=<p>In size and general aspect, <i>Hypnum holmenii</i> often resembles <i>H. plicatulum</i>, but differs in its usually not markedly auriculate leaves and differentiated alar cells. The enlarged alar cells are not differentiated in <i>H. plicatulum</i>. From <i>H. callichroum</i>, <i>H. holmenii</i> differs in its gradually differentiated alar cells (abruptly differentiated in the former). <i>Hypnum hamulosum</i> differs in its strongly hamate stem leaves and less differentiated alar cells. <i>Hypnum holmenii</i> often resembles related species, thus its distribution has been inadequately documented. The plants are shiny and loosely affixed to the substrate; the pseudoparaphyllia margins are irregularly dentate.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Hypnum holmenii
|authority=Ando
|rank=species
|parent rank=genus
|synonyms=Stereodon holmenii
|basionyms=
|family=Hypnaceae
|phenology=Capsules mature Jul–Aug.
|habitat=Moist heaths, shrub thickets, spruce forests, calcareous substrates
|elevation=low to moderate elevations (0-1500 m)
|distribution=Greenland;Alta.;B.C.;N.W.T.;Nunavut;Yukon;Europe (Finland).
|reference=None
|publication title=Hikobia
|publication year=1994
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V28/V28_841.xml
|genus=Hypnum
|species=Hypnum holmenii
}}<!--

-->[[Category:Treatment]][[Category:Hypnum]]