View source for Sciuro-hypnum curtum

{{Treatment/ID
|accepted_name=Sciuro-hypnum curtum
|accepted_authority=(Lindberg) Ignatov
|publications={{Treatment/Publication
|title=Arctoa
|place=16: 71. 2008
|year=2008
}}
|basionyms={{Treatment/ID/Basionym
|name=Hypnum curtum
|authority=Lindberg
|rank=species
|publication_title=Musc. Scand. ,
|publication_place=35. 1879
}}
|synonyms={{Treatment/ID/Synonym
|name=Brachythecium curtum
|authority=(Lindberg) Limpricht
|rank=species
}}
|hierarchy=Brachytheciaceae;Sciuro-hypnum;Sciuro-hypnum curtum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brachytheciaceae]]</div><div class="higher-taxon"><small>genus</small>[[Sciuro-hypnum]]</div><div class="higher-taxon"><small>species</small>[[Sciuro-hypnum curtum]]</div></div>
|volume=Volume 28
|mention_page=page 419, 422, 454, 456, 461, 463
|treatment_page=page 462
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism size;whole_organism coloration;whole_organism coloration;whole_organism coloration;whole_organism growth form;tuft architecture or fragility"><b>Plants </b>medium-sized to large, in loose tufts, green, sometimes yellowish or brownish.</span> <span class="statement" id="st-d0_s1" data-properties="stem some measurement;stem orientation;stem orientation;stem course;stem shape;stem architecture;stem architecture or shape;branch some measurement;branch course;branch shape;branch architecture"><b>Stems </b>to 10 cm, ascending or more commonly arching, flexuose, terete to subcomplanate-foliate, irregularly pinnate, branches to 10 mm, often curved, terete to complanate-foliate.</span> <span class="statement" id="st-d0_s2" data-properties="stem-leaf orientation;stem-leaf arrangement;stem-leaf shape;stem-leaf shape;stem-leaf shape;stem-leaf architecture or arrangement or shape or vernation;stem-leaf length;stem-leaf width"><b>Stem-</b>leaves erectopatent to patent, loosely arranged, ovate or ovate-triangular, slightly concave, not plicate, 1.4–2.4 × 0.9–1.5 mm;</span> <span class="statement" id="st-d0_s3" data-properties="base size or width;decurrency width">base with decurrency broad proximally, becoming very narrow;</span> <span class="statement" id="st-d0_s4" data-properties="margin shape;margin architecture or shape">margins plane, serrulate;</span> <span class="statement" id="st-d0_s5" data-properties="apex shape">apex gradually acuminate to narrowly acute;</span> <span class="statement" id="st-d0_s6" data-properties="leaf character;leaf fragility">costa to 30–75% leaf length, weak, terminal abaxial spine small or absent;</span> <span class="statement" id="st-d0_s7" data-properties="terminal abaxial spine size;terminal abaxial spine presence;cell size;cell length;cell width;wall width;region prominence;region coloration">alar cells larger than basal juxtacostal cells, 15–40 × 12–18 µm, walls relatively thin, region abruptly or occasionally gradually delimited, pellucid;</span> <span class="statement" id="st-d0_s8" data-properties="laminal cell arrangement or course or shape;laminal cell length;laminal cell width;basal-cell width;basal-cell height or length or size;row quantity">laminal cells linear, 60–150 × 7–12 µm; basal-cells broader, shorter than laminal cells, region in 3 rows.</span> <span class="statement" id="st-d0_s9" data-properties="branch leaf shape"><b>Branch </b>leaves ovate;</span> <span class="statement" id="st-d0_s10" data-properties="base architecture or shape">base asymmetric;</span> <span class="statement" id="st-d0_s11" data-properties="margin orientation;margin architecture or shape">margins recurved basally on one side, more strongly serrulate to coarsely serrate distally;</span> <span class="statement" id="st-d0_s12" data-properties="apex shape">apex acute;</span> <span class="statement" id="st-d0_s13" data-properties="terminal spine prominence;abaxial tooth quantity">costa in some leaves with terminal spine prominent, with several abaxial teeth.</span> <span class="statement" id="st-d0_s14" data-properties="costa reproduction;costa reproduction"><b>Sexual </b>condition autoicous.</span> <span class="statement" id="st-d0_s15" data-properties="seta coloration;seta some measurement;seta pubescence or relief"><b>Seta </b>reddish, 1.7–3.2 cm, rough.</span> <span class="statement" id="st-d0_s16" data-properties="capsule orientation;capsule coloration;capsule shape;capsule course;capsule some measurement"><b>Capsule </b>horizontal to pendent, reddish, oblong, curved, especially when young (sometimes forming 180–270° arch), 2 mm.</span> <span class="statement" id="st-d0_s17" data-properties="spore some measurement"><b>Spores </b>13–17 µm.</span><!--

-->{{Treatment/Body
|habitat=Forest floors, coniferous forests, soil rich in humus, logs, mineral soil, tree bases, under tall herb vegetation
|elevation=low to moderate elevations (0-900 m)
|distribution=Man.;N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;P.E.I.;Que.;Colo.;Conn.;Maine;Md.;Mich.;Mont.;N.H.;N.J.;N.Y.;Pa.;Vt.;W.Va.;n Eurasia;Atlantic Islands
|discussion=<p>In the West, Sciuro-hypnum curtum is known only from two collections: North American Mosses 259, Montana, Columbia Falls, R. S. Williams in 1896 (NY), and Manitoba, south of Harashville, Mueller-Dombois 068–13 (MO). Most collections in American herbaria are deposited under the name Brachythecium starkei. Sciuro-hypnum curtum becomes very slender and loosely foliate in deep shade. It can be recognized by not plicate, ovate to ovate-triangular leaves; relatively short costa, often ending at 0.4–0.6 leaf length; pellucid group of cells adjacent to decurrency or sometimes extending to most of leaf base; frequent sporophytes; coarse serration of leaf margins; cells often longer than 100 µm in stem leaves; and strongly curved capsules. Brachythecium rutabulum is similar, and when optimally developed forms rather dense tufts that never occur in S. curtum. However, B. rutabulum from deeply shaded habitats may have loose tufts and nearly plane leaves, and strongly resemble S. curtum. The leaf of S. curtum from its broadest point is tapered at 35–45°, while for B. rutabulum at 30–35°, resulting in more acuminate leaves of the former. The patterns of decurrencies are also distinct: S. curtum has long and narrowly decurrent leaves, while in B. rutabulum decurrencies are triangular, broad and rather short.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Sciuro-hypnum curtum
|authority=(Lindberg) Ignatov
|rank=species
|parent rank=genus
|synonyms=Brachythecium curtum
|basionyms=Hypnum curtum
|family=Brachytheciaceae
|habitat=Forest floors, coniferous forests, soil rich in humus, logs, mineral soil, tree bases, under tall herb vegetation
|elevation=low to moderate elevations (0-900 m)
|distribution=Man.;N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;P.E.I.;Que.;Colo.;Conn.;Maine;Md.;Mich.;Mont.;N.H.;N.J.;N.Y.;Pa.;Vt.;W.Va.;n Eurasia;Atlantic Islands
|reference=None
|publication title=Arctoa
|publication year=2008
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V28/V28_719.xml
|genus=Sciuro-hypnum
|species=Sciuro-hypnum curtum
|abaxial tooth quantity=several
|apex shape=acute;gradually acuminate;narrowly acute
|basal-cell height or length or size=shorter
|basal-cell width=broader
|base architecture or shape=asymmetric
|base size or width=narrow
|branch architecture=complanate-foliate
|branch course=curved
|branch leaf shape=ovate
|branch shape=terete
|branch some measurement=0mm;10mm
|capsule coloration=reddish
|capsule course=curved
|capsule orientation=horizontal;pendent
|capsule shape=oblong
|capsule some measurement=2
|cell length=15um;40um
|cell size=larger
|cell width=12um;18um
|costa reproduction=autoicous;sexual
|decurrency width=broad
|laminal cell arrangement or course or shape=linear
|laminal cell length=60um;150um
|laminal cell width=7um;12um
|leaf character=length
|leaf fragility=weak
|margin architecture or shape=strongly serrulate;coarsely serrate
|margin orientation=recurved
|margin shape=plane
|region coloration=pellucid
|region prominence=delimited
|row quantity=3
|seta coloration=reddish
|seta pubescence or relief=rough
|seta some measurement=1.7cm;3.2cm
|spore some measurement=13um;17um
|stem architecture=subcomplanate-foliate
|stem architecture or shape=pinnate
|stem course=flexuose
|stem orientation=arching;ascending
|stem shape=terete
|stem some measurement=0cm;10cm
|stem-leaf architecture or arrangement or shape or vernation=not plicate
|stem-leaf arrangement=arranged
|stem-leaf length=1.4mm;2.4mm
|stem-leaf orientation=erectopatent;patent
|stem-leaf shape=concave;ovate-triangular;ovate
|stem-leaf width=0.9mm;1.5mm
|terminal abaxial spine presence=absent
|terminal abaxial spine size=small
|terminal spine prominence=prominent
|tuft architecture or fragility=loose
|wall width=thin
|whole_organism coloration=brownish;yellowish;green
|whole_organism growth form=plant
|whole_organism size=medium-sized;large
}}<!--

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