View source for Sphagnum tenerum

{{Treatment/ID
|accepted_name=Sphagnum tenerum
|accepted_authority=Sullivant in A. Gray
|publications={{Treatment/Publication
|title=in A. Gray, Manual ed.
|place=2, 611. 1856,
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Sphagnum capillaceum var. tenerum
|authority=(Sullivant) H. A. Crum
}} {{Treatment/ID/Synonym
|name=Sphagnum capillifolium var. tenerum
|authority=(Sullivant) H. A. Crum
}} {{Treatment/ID/Synonym
|name=Sphagnum tenerum var. virginicum
|authority=H.A. Crum & L. E. Anderson
}}
|hierarchy=Sphagnaceae;Sphagnum;Sphagnum sect. Acutifolia;Sphagnum tenerum
|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 tenerum]]</div></div>
|volume=Volume 27
|mention_page=page 80, 88, 92, 95, 101
|treatment_page=page 100
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>± robust, weak-stemmed, and compact, capitulum hemispherical, branches in capitulum short and blunt; typically mottled pale yellow-green and purplish red, without metallic sheen when dry. <b>Stems</b> pale yellow-green to pink; superficial cortical cells nearly always aporose. <b>Stem</b> leaves 1.4–1.8 mm, elongate-triangular, lingulate-triangular, hemiisophyllous forms elongate triangular-ovate, 1.4–1.8 mm, apex usually conspicuously toothed, border narrow at base (less than 0.25 width); hyaline cells narrowly rhombic to S-shaped, can be efibrillose and aporose but more commonly fibrillose and porose, 0–1-septate. <b>Branches</b> turgid and terete, leaves, not 5-ranked. <b>Branch</b> fascicles with 2 spreading and 1–2 pendent branches. <b>Branch</b> leaves ovate, 1.1–1.7 mm, slightly concave, straight, apex weakly involute and conspicuously toothed; hyaline cells on the convex surface with round to elliptic pores along the commissures, grading from moderate-sized pores near apex to large pores at leaf base, concave surface with large round pores throughout. <b>Sexual</b> condition uncertain, monoicous or dioicous or possibly both. <b>Spores</b> 22–25 µm, finely roughened.</span><!--

-->{{Treatment/Body
|habitat=Damp sand and thin humus especially around pond margins, open savannas, and pine barrens
|elevation=low to moderate elevations
|distribution=Ala.;Del.;D.C.;Fla.;Ga.;Ky.;Md.;N.J.;N.Y.;N.C.;Pa.;R.I.;S.C.;Tenn.;Va.
|discussion=<p>Sporophytes are uncommon in Spagnum tenerum. The sexual condition is uncertain because of past taxonomic confusion with <i>S. capillifolium</i> (R. E. Andrus 1980). <i>Sphagnum tenerum</i> is usually described (incorrectly) as having hemiisophyllous stem leaves, and many collections of other species of sect. Acutifolia with such leaves have been called <i>S. tenerum</i>. When correctly characterized, <i>S. tenerum</i> is can be confused only with <i>S. capillifolium</i>, with which it has only a very small range overlap. Microscopically, besides the otherwise quite different <i>S. angermanicum</i>, <i>S. tenerum</i> is the only species of sect. Acutifolia with large round free pores in most of the branch leaf hyaline cells on their concave surfaces. See also discussion under 71. <i>S. capillifolium</i>. Sexual condition and spore features were taken from H. A. Crum (1984).</p><!--
--><p>The name <i>Sphagnum</i> evansii Warnstorf has also been used for this taxon.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Sphagnum tenerum
|author=
|authority=Sullivant in A. Gray
|rank=species
|parent rank=section
|synonyms=Sphagnum capillaceum var. tenerum;Sphagnum capillifolium var. tenerum;Sphagnum tenerum var. virginicum
|basionyms=
|family=Sphagnaceae
|habitat=Damp sand and thin humus especially around pond margins, open savannas, and pine barrens
|elevation=low to moderate elevations
|distribution=Ala.;Del.;D.C.;Fla.;Ga.;Ky.;Md.;N.J.;N.Y.;N.C.;Pa.;R.I.;S.C.;Tenn.;Va.
|reference=None
|publication title=in A. Gray, Manual ed.
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V27/V27_106.xml
|genus=Sphagnum
|section=Sphagnum sect. Acutifolia
|species=Sphagnum tenerum
}}<!--

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