View source for Sphagnum contortum

{{Treatment/ID
|accepted_name=Sphagnum contortum
|accepted_authority=Schultz
|publications={{Treatment/Publication
|title=Prodr. Fl. Starg. Suppl.,
|place=64. 1819,
}}
|basionyms=
|synonyms=
|hierarchy=Sphagnaceae;Sphagnum;Sphagnum sect. Subsecunda;Sphagnum contortum
|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. Subsecunda]]</div><div class="higher-taxon"><small>species</small>[[Sphagnum contortum]]</div></div>
|volume=Volume 27
|mention_page=page 78, 84, 98
|treatment_page=page 80
}}<!--

--><span class="statement" id="st-d0_s0" data-properties=""><b>Plants </b>moderate to small-sized, weak-stemmed to spawling;</span> <span class="statement" id="st-d0_s1" data-properties="whole_organism size;whole_organism architecture;whole_organism coloration;whole_organism coloration;whole_organism growth form">green, yellow-green to golden brown;</span> <span class="statement" id="st-d0_s2" data-properties="branch course">capitulum usually large and flat with curved branches;</span> <span class="statement" id="st-d0_s3" data-properties="capitulum size;capitulum prominence or shape;capitulum coloration;capitulum coloration;capitulum coloration;capitulum coloration;capitulum coloration">green, yellow-green, or golden brown.</span> <span class="statement" id="st-d0_s4" data-properties="stem coloration;stem coloration"><b>Stems </b>pale green to light-brown, rarely dark-brown;</span> <span class="statement" id="st-d0_s5" data-properties="layer quantity;bud size;bud architecture">superficial cortex of 2–3 layers of enlarged, thin-walled cells.</span> <span class="statement" id="st-d0_s6" data-properties="leaf-stem shape;leaf-stem distance"><b>Stem-</b>leaves triangular-lingulate to lingulate, 0.7–1.4 mm;</span> <span class="statement" id="st-d0_s7" data-properties="apex shape;apex shape">apex rounded-obtuse and weakly denticulate;</span> <span class="statement" id="st-d0_s8" data-properties="bud coloration;bud architecture;bud architecture;bud atypical quantity">hyaline cells nonseptate, mostly efibrillose, and, if porose, with more pores per cell on the concave surface (3–6) than on the convex surface (0–2).</span> <span class="statement" id="st-d0_s9" data-properties="branch course;leaf orientation"><b>Branches </b>somewhat curved, leaves spreading.</span> <span class="statement" id="st-d0_s10" data-properties="branch arrangement;branch quantity;branch orientation;branch atypical quantity;branch quantity;branch orientation"><b>Branch </b>fascicles with 2–3 spreading and 2–3 (4) pendent branches.</span> <span class="statement" id="st-d0_s11" data-properties=""><b>Branch </b>leaves ovate to ovatelanceolate, 1.2–2 mm;</span> <span class="statement" id="st-d0_s12" data-properties="branch leaf shape;branch leaf some measurement;branch leaf arrangement">subsecund;</span> <span class="statement" id="st-d0_s13" data-properties="bud coloration;bud quantity;pore quantity;pore size;line architecture;surface shape;surface shape">hyaline cells with numerous tiny pores in a continuous line along the commissures on the convex surface, no or scattered pores on the concave surface.</span> <span class="statement" id="st-d0_s14" data-properties="pore arrangement;pore reproduction;pore reproduction"><b>Sexual </b>condition dioicous.</span> <span class="statement" id="st-d0_s15" data-properties="capsule position;pseudostomatum arrangement"><b>Capsule </b>exserted, with scattered pseudostomata.</span> <span class="statement" id="st-d0_s16" data-properties="spore some measurement;spore relief"><b>Spores </b>22–28 µm; papillose on both surfaces;</span> <span class="statement" id="st-d0_s17" data-properties="proximal laesura quantity">proximal laesurae more than 0.5 spore radius.</span><!--

-->{{Treatment/Body
|habitat=Very minerotrophic, sometimes found in slightly basic mires, intolerant of shade
|elevation=low to moderate elevations
|distribution=Alta.;B.C.;Nfld. and Labr. (Nfld.);N.S.;Ont.;Que.;Alaska;Calif.;Colo.;Conn.;Idaho;Ill.;Ind.;Maine;Md.;Mass.;Mich.;Minn.;N.H.;N.J.;N.Y.;N.C.;Ohio;Oreg.;Pa.;R.I.;Vt.;Wash.;W.Va.;Wis.;Eurasia
|discussion=<p>Sporophytes are rare in Sphagnum contortum. This species is often associated with S. warnstorfii, S. centrale, Campylium stellatum, and Calliergonella cuspidata. The relatively small size, curved capitulum branches, and loosely spreading, subsecund branch leaves separate this species along with S. subsecundum. See also discussion under 61. S. platyphyllum.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Sphagnum contortum
|authority=Schultz
|rank=species
|parent rank=section
|synonyms=
|basionyms=
|family=Sphagnaceae
|habitat=Very minerotrophic, sometimes found in slightly basic mires, intolerant of shade
|elevation=low to moderate elevations
|distribution=Alta.;B.C.;Nfld. and Labr. (Nfld.);N.S.;Ont.;Que.;Alaska;Calif.;Colo.;Conn.;Idaho;Ill.;Ind.;Maine;Md.;Mass.;Mich.;Minn.;N.H.;N.J.;N.Y.;N.C.;Ohio;Oreg.;Pa.;R.I.;Vt.;Wash.;W.Va.;Wis.;Eurasia
|reference=None
|publication title=Prodr. Fl. Starg. Suppl.,
|publication year=
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V27/V27_67.xml
|genus=Sphagnum
|section=Sphagnum sect. Subsecunda
|species=Sphagnum contortum
|apex shape=denticulate;rounded-obtuse
|branch arrangement=fascicles
|branch atypical quantity=4
|branch course=curved;curved
|branch leaf arrangement=subsecund
|branch leaf shape=ovate;ovatelanceolate
|branch leaf some measurement=1.2mm;2mm
|branch orientation=pendent;spreading
|branch quantity=2;3
|bud architecture=porose;efibrillose;thin-walled
|bud atypical quantity=0;2
|bud coloration=hyaline;hyaline
|bud quantity=no
|bud size=enlarged
|capitulum coloration=golden brown;yellow-green;golden brown;yellow-green;green
|capitulum prominence or shape=flat
|capitulum size=large
|capsule position=exserted
|layer quantity=2;3
|leaf orientation=spreading
|leaf-stem distance=0.7mm;1.4mm
|leaf-stem shape=triangular-lingulate;lingulate
|line architecture=continuous
|pore arrangement=scattered
|pore quantity=numerous
|pore reproduction=dioicous;sexual
|pore size=tiny
|pseudostomatum arrangement=scattered
|spore relief=papillose
|spore some measurement=22um;28um
|stem coloration=dark-brown;pale green;light-brown
|surface shape=concave;convex
|whole_organism architecture=weak-stemmed
|whole_organism coloration=yellow-green;golden brown
|whole_organism growth form=plant
|whole_organism size=moderate;small-sized
}}<!--

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