View source for Sphagnum girgensohnii

{{Treatment/ID
|accepted_name=Sphagnum girgensohnii
|accepted_authority=Russow
|publications={{Treatment/Publication
|title=Beitr. Torfm.,
|place=46. 1865,
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Sphagnum mehneri
|authority=Warnstorf
}}
|hierarchy=Sphagnaceae;Sphagnum;Sphagnum sect. Acutifolia;Sphagnum girgensohnii
|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. Acutifolia]]</div><div class="higher-taxon"><small>species</small>[[Sphagnum girgensohnii]]</div></div>
|volume=Volume 27
|mention_page=page 85, 86, 95, 96, 97
|treatment_page=page 94
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>moderate-sized to robust, open, very stiff and slender, less frequently compact, capitulum large, flat, and stellate; typically deep green in shaded sites to yellowish brown in more open sites; without metallic lustre when dry. <b>Stems</b> pale green to yellow-brown; superficial cortical cells with a single large round pore in distal portion of cell usually free from cell wall. <b>Stem</b> leaves lingulate, broadly lingulate to lingulate-spatulate; 0.8–1.3 mm, apex broad, truncate and lacerate, border broad at base (more than 0.25 of base); hyaline cells rhomboid, efibrillose, and rarely septate. <b>Branches</b> typically long and tapering, not 5-ranked. <b>Branch</b> fascicles with 2 spreading and 1–2 pendent branches. <b>Branch</b> stem with solitary retort cells or in groups of 2–3, necks moderately distinct. <b>Branch</b> leaves ovate to ovate-lanceolate, 1–1.4(–1.8) mm, concave, straight, apex strongly involute, margins entire; hyaline cells on convex surface with numerous elliptic pores along the commissures, grading from small pores near the apex to large pores near the base, concave surface with large round pores along the margins and base. <b>Sexual</b> condition dioicous. <b>Spores</b> 21–27 µm, moderately to coarsely papillose on both surfaces; proximal laesura less than 0.5 spore radius.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature late summer.
|habitat=Shade tolerant, forming carpets on moist forest floors, along small streams, up through subalpine zone
|elevation=low to high elevations
|distribution=Greenland;Alta. B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Conn.;Idaho.;Ill.;Ind.;Maine;Md.;Mass.;Mich.;Minn.;N.H.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Oreg.;Pa.;R.I.;Tenn.;Vt.;Va.;Wash.;W.Va.;Wis.;Eurasia.
|discussion=<p>Sporophytes are uncommon in <i>Sphagnum girgensohnii</i>. This species is most frequently associated with <i>S. russowii</i>, but also found growing with <i>S. centrale</i>, <i>S. fallax</i>, <i>S. fimbriatum</i>, <i>S. warnstorfii</i>, and <i>S. magellanicum</i> when growing in shaded sites of mires. It is very similar to <i>S. rubiginosum</i>, but <i>S. girgensohnii</i> lacks any reddish pigments, has only 2 spreading branches per fascicle, infrequently produces sporophytes, and differs in spore morphology. Throughout much of its range, <i>S. girgensohnii</i> is readily recognized by its green color and its large, slender, strongly stellate capitulum. In the more northern portion of its range, it frequently forms compact stands with a golden brown color and then the stem leaf must often be examined for accurate identification. In Alaska it overlaps morphogically with <i>S. fimbriatum </i>subsp.<i> concinnum</i>, which can look very similar but will have a more spatulate stem leaf that is lacerate completely across the broad flat apex and slightly down the sides. <i>Sphagnum girgensohnii</i>, on the other hand, has stem leaves only lacerate for about 3/4 of the apex width and less conspicuously broadened at the apex.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Sphagnum girgensohnii
|author=
|authority=Russow
|rank=species
|parent rank=section
|synonyms=Sphagnum mehneri
|basionyms=
|family=Sphagnaceae
|phenology=Capsules mature late summer.
|habitat=Shade tolerant, forming carpets on moist forest floors, along small streams, up through subalpine zone
|elevation=low to high elevations
|distribution=Greenland;Alta. B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Conn.;Idaho.;Ill.;Ind.;Maine;Md.;Mass.;Mich.;Minn.;N.H.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Oreg.;Pa.;R.I.;Tenn.;Vt.;Va.;Wash.;W.Va.;Wis.;Eurasia.
|reference=None
|publication title=Beitr. Torfm.,
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V27/V27_94.xml
|genus=Sphagnum
|section=Sphagnum sect. Acutifolia
|species=Sphagnum girgensohnii
}}<!--

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