View source for Plagiothecium

{{Treatment/ID
|accepted_name=Plagiothecium
|accepted_authority=Schimper
|publications={{Treatment/Publication
|title=in P. Bruch and W. P. Schimper, Bryol. Europ.
|place=5: 179, plates 494 – 506. 1851
|year=1851
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Stereodon sect. Plagiothecium
|authority=(Schimper) Mitten
|rank=section
}}
|hierarchy=Plagiotheciaceae;Plagiothecium
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Plagiotheciaceae]]</div><div class="higher-taxon"><small>genus</small>[[Plagiothecium]]</div></div>
|etymology=Greek, plagios, oblique, and theke, case, alluding to capsule orientation
|volume=Volume 28
|mention_page=page 485, 518, 567, 568, 644
|treatment_page=page 484
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>dark green to yellow-green, glossy or sometimes dull. <b>Stems</b> 2–6(–8) cm, 0.5–4 mm wide across leafy stem. <b>Leaves</b> 0.7–4 × (0.2–)0.4–2 mm; alar cells spheric, oval, quadrate, or rectangular, in 1–8 vertical rows, region triangular, or auriculate and oval; basal laminal cells shorter, broader than medial; medial cells 36–180 × 3–21 µm; apical cells often shorter. <b>Specialized</b> asexual reproduction by 2–7-celled propagula borne on branched stalks in leaf axils or in clusters without stalks on abaxial leaf surface. <b>Seta</b> yellow or orange to red-brown. <b>Capsule</b> yellowish, orange-brown, reddish, light brown, or dark red when mature, oblong to ovoid, smooth to striate, often wrinkled at neck, often contracted below mouth when dry; annulus differentiated; endostome cilia 1–3, usually as long as segments or nearly so, nodulose, rarely rudimentary or absent.</span><!--

-->{{Treatment/Body
|distribution=North America;Mexico;Central America;South America;Europe;Asia;Africa;Pacific Islands (New Guinea);Australia;Antarctica.
|discussion=<p>Species ca. 90 (6 in the flora).</p><!--
--><p><i>Plagiothecium</i> is a genus of terrestrial habitats in coniferous and deciduous woods, on rotten logs, stumps, bases of trees, humus and soil, frequently overlying acidic cliffs and boulders, sometimes in swamps and marshes, in temperate, boreal and Arctic regions, and in the tropics at high elevations.</p>
|tables=
|references={{Treatment/Reference
|id=ireland1969b
|text=Ireland, R. R. 1969b. A Taxonomic Revision of the Genus Plagiothecium for North America, North of Mexico. Ottawa.
}}{{Treatment/Reference
|id=ireland1986a
|text=Ireland, R. R. 1986. Synopsis of the genus Plagiothecium for North America. Lindbergia 12: 49–56.
}}{{Treatment/Reference
|id=ireland1987a
|text=Ireland, R. R. 1987. Scanning electron microscope study of the spores of the North American species of Plagiothecium. Mem. New York Bot. Gard. 45: 95–110.
}}
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Alar cells oval, quadrate, rectangular, or spheric; leaf margins broadly recurved
|[[#key-0-2| > 2]]
|-id=key-0-1
|1
|Alar cells rectangular; leaf margins plane or narrowly recurved
|[[#key-0-3| > 3]]
|-id=key-0-2
|2
|Stems complanate-foliate or sometimes julaceous; leaf apices acute to acuminate or rarely narrowly obtuse, seldom recurved; medial laminal cells 12-21 µm wide.
|[[Plagiothecium denticulatum|Plagiothecium denticulatum]]
|-id=key-0-2
|2
|Stems julaceous; leaf apices acuminate, usually recurved; medial laminal cells 6-12 µm wide.
|[[Plagiothecium berggrenianum|Plagiothecium berggrenianum]]
|-id=key-0-3
|3
|Leaf apices abruptly contracted to long-filiform acumen.
|[[Plagiothecium piliferum|Plagiothecium piliferum]]
|-id=key-0-3
|3
|Leaf apices not abruptly contracted
|[[#key-0-4| > 4]]
|-id=key-0-4
|4
|Leaves asymmetric, flat.
|[[Plagiothecium laetum|Plagiothecium laetum]]
|-id=key-0-4
|4
|Leaves symmetric, concave
|[[#key-0-5| > 5]]
|-id=key-0-5
|5
|Stems to 2 cm, 0.5-1 mm wide across leafy stem; leaves erect-spreading; medial laminal cells 4-10 µm wide; hydric habitats.
|[[Plagiothecium latebricola|Plagiothecium latebricola]]
|-id=key-0-5
|5
|Stems to 4 cm, 1-4 mm wide across leafy stem; leaves erect or sometimes spreading; medial laminal cells 7-17 µm wide; mesic or somewhat xeric habitats.
|[[Plagiothecium cavifolium|Plagiothecium cavifolium]]
|}
</div></div><!--

-->{{#Taxon:
name=Plagiothecium
|authority=Schimper
|rank=genus
|parent rank=family
|synonyms=Stereodon sect. Plagiothecium
|basionyms=
|family=Plagiotheciaceae
|distribution=North America;Mexico;Central America;South America;Europe;Asia;Africa;Pacific Islands (New Guinea);Australia;Antarctica.
|reference=ireland1969b;ireland1986a;ireland1987a
|publication title=in P. Bruch and W. P. Schimper, Bryol. Europ.
|publication year=1851
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_754.xml
|genus=Plagiothecium
}}<!--

-->[[Category:Treatment]][[Category:Plagiotheciaceae]]