View source for Sphagnum henryense

{{Treatment/ID
|accepted_name=Sphagnum henryense
|accepted_authority=Warnstorf
|publications={{Treatment/Publication
|title=Hedwigia
|place=39: 107. 1900,
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Sphagnum henryense var. bartlettii
|authority=Warnstorf
|rank=variety
}}
|hierarchy=Sphagnaceae;Sphagnum;Sphagnum sect. Sphagnum;Sphagnum henryense
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Sphagnaceae]]</div><div class="higher-taxon"><small>genus</small>[[Sphagnum]]</div><div class="higher-taxon"><small>section</small>[[Sphagnum sect. Sphagnum]]</div><div class="higher-taxon"><small>species</small>[[Sphagnum henryense]]</div></div>
|volume=Volume 27
|mention_page=page 49, 52, 53, 92
|treatment_page=page 51
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>moderate-sized to robust, capitulum typically flat, ± 5-radiate and with terminal bud slightly visible; green, pale green, to pale pinkish brown tinged with brown to reddish brown; forming carpets or low hummocks. <b>Stems</b> pale green to brown; superficial cortical layer with spiral reinforcing fibrils clearly visible, usually 4 or more pores per cell, comb-fibrils lacking on onterior wall. <b>Stem</b> leaves to 1.9 × 1 mm; rarely hemiisophyllous; hyaline cells non-ornamented, nonseptate or septate. <b>Branches</b> ± tapering to a point, leaves spreading to moderately imbricate. <b>Branch</b> fascicles with 2 spreading and 2 pendent branches. <b>Branch</b> stems with hyaline cells non-ornamented; funnel-like projections absent from interior end walls, large round pores on superficial walls. <b>Branch</b> leaves ovate, to 2.7 × 1 mm; hyaline cells on convex surface with numerous small round pores along the commissures, cell walls overlying chlorophyll cells often with a network of irregular worm like ridges although they may be lacking; chlorophyllous cells isosceles-triangular to narrowly ovate triangular in transverse section and just enclosed on convex surface,end wall not thickened. <b>Sexual</b> condition dioicous. <b>Capsule</b> with numerous pseudostomata. <b>Spores</b> 24–29 µm; surface finely papillose to nearly smooth.</span><!--

-->{{Treatment/Body
|habitat=Poor to medium fens, common in wooded fens and pond margins
|elevation=low to moderate elevations
|distribution=B.C.;Nfld. and Labr. (Nfld.);N.S.;P.E.I.;Ala.;Alaska;Ark.;Calif.;Conn.;Del.;D.C.;Fla.;Ga.;Ill.;Ind.;La.;Maine;Md.;Mass.;Mich.;Miss.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Oreg.;S.C.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;Asia.
|discussion=<p>The typical form of <i>Sphagnum henryense</i> is a large plant with a quite flat capitulum with a small terminal bud. Microscopically, typical material has distinct ridges on the branch leaf hyaline cells and relatively small and round pores on the branch leaf hyaline cell convex surface. <i>Sphagnum palustre</i>, which has the same branch leaf chlorophyll cell cross section, typically has smooth hyaline cell walls and hyaline cell pores that are larger and more elliptical in shape. However, <i>Sphagnum</i> species are plastic phenotypically and it is common to find plants that cannot be reliably assigned to either <i>S. henryense</i> or <i>S. palustre</i>. For example, some species of <i>Sphagnum</i> that are relatively easy to distinguish on other characteristics, such as <i>S. papillosum</i>, <i>S. alaskense</i> and <i>S. affine</i>, may occasionally completely lack any hyaline cell ornamentation or display it in reduced form. Since these can be distinguished on other characters, the species are still readily identifiable, but when <i>S. henryense</i> lacks the ornamentation, there is no other solid character to distinguish it from <i>S. palustre</i>. Thus, although we can find material from both North American coasts that has good ornamentation (R. E. Andrus 1980), there is much other material that looks in other respects like <i>S. henryense</i> but lacks the ornamentation. Barring taxonomy beyond microscopic examination, many collections of henryense/palustre will of necessity not be absolutely identifiable. Where their ranges overlap, mixed stands may often be found. We believe that the species are still good, but accurate delimitation of their distinctive ecologies and ranges will be very problematic.</p>
|tables=
|references=
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-->{{#Taxon:
name=Sphagnum henryense
|authority=Warnstorf
|rank=species
|parent rank=section
|synonyms=Sphagnum henryense var. bartlettii
|basionyms=
|family=Sphagnaceae
|habitat=Poor to medium fens, common in wooded fens and pond margins
|elevation=low to moderate elevations
|distribution=B.C.;Nfld. and Labr. (Nfld.);N.S.;P.E.I.;Ala.;Alaska;Ark.;Calif.;Conn.;Del.;D.C.;Fla.;Ga.;Ill.;Ind.;La.;Maine;Md.;Mass.;Mich.;Miss.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Okla.;Oreg.;S.C.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;Asia.
|reference=None
|publication title=Hedwigia
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V27/V27_12.xml
|genus=Sphagnum
|section=Sphagnum sect. Sphagnum
|species=Sphagnum henryense
}}<!--

-->[[Category:Treatment]][[Category:Sphagnum sect. Sphagnum]]