View source for Plagiomnium cuspidatum

{{Treatment/ID
|accepted_name=Plagiomnium cuspidatum
|accepted_authority=(Hedwig) T. J. Koponen
|publications={{Treatment/Publication
|title=Ann. Bot. Fenn.
|place=5: 146. 1968
|year=1968
}}
|basionyms={{Treatment/ID/Basionym
|name=Mnium cuspidatum
|authority=Hedwig
|publication_title=Sp. Musc. Frond.,
|publication_place=192, plate 45, figs. 5–8. 1801
}}
|synonyms=
|hierarchy=Mniaceae;Plagiomnium;Plagiomnium cuspidatum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Mniaceae]]</div><div class="higher-taxon"><small>genus</small>[[Plagiomnium]]</div><div class="higher-taxon"><small>species</small>[[Plagiomnium cuspidatum]]</div></div>
|volume=Volume 28
|mention_page=page 230, 232, 233
|treatment_page=page 231
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Erect </b>stems 1–2(–3.5) cm, not dendroid; sterile stems to 7 cm. <b>Leaves</b> dark green or yellow-green, contorted when dry, flat when moist, obovate, ± diamond-shaped or occasionally elliptic, 3–5 mm; base broadly long-decurrent; margins toothed from about mid leaf to apex, teeth sharp, of 1 (or 2) cells; apex acute or acuminate, long-cuspidate, cusp sometimes toothed; costa percurrent or excurrent; medial laminal cells short-elongate or ± isodiametric, 20–30(–40) µm, slightly smaller near margins, occasionally in longitudinal rows, rarely in diagonal rows, strongly collenchymatous, walls not pitted; marginal cells linear, in 2–4(–5) rows. <b>Sexual</b> condition synoicous. <b>Seta</b> single, yellow, brown, or sometimes reddish, 2–3 cm. <b>Capsule</b> pendent, ovoid or cylindric, 2–3.5 mm, neck not distinct; operculum conic-apiculate. <b>Spores</b> 18–31 µm.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature late spring.
|habitat=Soil, logs, rock, stumps or tree bases in wet meadows/carrs, forested rich peatlands, wet forests, fire-dependent forests/woodlands, mesic hardwood forests, cliff/talus
|elevation=low to moderate elevations
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.S.;Ont.;P.E.I.;Que.;Sask.;Ala.;Alaska;Ark.;Calif.;Colo.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;Wyo.;Mexico (México);Europe;Asia;Africa.
|discussion=<p><i>Plagiomnium cuspidatum</i>, <i>P. drummondii</i>, and <i>P. floridanum</i> are the only North American species of the genus that consistently have well-developed, sharp teeth restricted to the distal portions of the leaf margins. <i>Plagiomnium ellipticum</i> and <i>P. rostratum</i> often have leaves that are toothed only distally, but the teeth are small and mostly blunt, and the leaves are never obovate. <i>Plagiomnium cuspidatum</i> has larger leaves and larger, less collenchymatous laminal cells than <i>P. drummondii</i> and <i>P. floridanum</i>. The thinner cell walls and larger cells of <i>P. drummondii</i> give it a distinctly more translucent aspect than <i>P. cuspidatum</i> and <i>P. floridanum</i>.</p><!--
--><p>In addition to the morphological characters in the key, <i>Plagiomnium cuspidatum</i> is separated from the closely allied <i>P. floridanum</i> by sexual condition, ploidy level, and ecology (R. Wyatt and I. J. Odrzykoski 2012). <i>Plagiomnium cuspidatum</i> is synoicous and diploid, with a chromosome count of n = 12, whereas <i>P. floridanum</i> is dioicous and haploid, with a chromosome count of n = 6. Although <i>Plagiomnium cuspidatum</i> exhibits a relatively broad ecological amplitude, <i>P. floridanum</i> shows a preference for soils associated with limestone.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Plagiomnium cuspidatum
|author=
|authority=(Hedwig) T. J. Koponen
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Mnium cuspidatum
|family=Mniaceae
|phenology=Capsules mature late spring.
|habitat=Soil, logs, rock, stumps or tree bases in wet meadows/carrs, forested rich peatlands, wet forests, fire-dependent forests/woodlands, mesic hardwood forests, cliff/talus
|elevation=low to moderate elevations
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.S.;Ont.;P.E.I.;Que.;Sask.;Ala.;Alaska;Ark.;Calif.;Colo.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Vt.;Va.;W.Va.;Wis.;Wyo.;Mexico (México);Europe;Asia;Africa.
|reference=None
|publication title=Ann. Bot. Fenn.
|publication year=1968
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V28/V28_368.xml
|genus=Plagiomnium
|species=Plagiomnium cuspidatum
}}<!--

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