View source for Orthotrichum obtusifolium

{{Treatment/ID
|accepted_name=Orthotrichum obtusifolium
|accepted_authority=Bridel
|publications={{Treatment/Publication
|title=Muscol. Recent.
|place=2(2): 23. 1801
|year=1801
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Nyholmiella obtusifolia
|authority=(Bridel) Holmen & E. Warncke
|rank=species
}} {{Treatment/ID/Synonym
|name=Orthotrichum inflexum
|authority=Müller Hal.
|rank=species
}}
|hierarchy=Orthotrichaceae;Orthotrichum;Orthotrichum obtusifolium
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Orthotrichaceae]]</div><div class="higher-taxon"><small>genus</small>[[Orthotrichum]]</div><div class="higher-taxon"><small>species</small>[[Orthotrichum obtusifolium]]</div></div>
|volume=Volume 28
|mention_page=page 45, 56
|treatment_page=page 59
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism some measurement;whole_organism growth form"><b>Plants </b>0.3–1.4 cm.</span> <span class="statement" id="st-d0_s1" data-properties="leaf-stem fixation or orientation;leaf-stem shape;leaf-stem distance"><b>Stem-</b>leaves erect-appressed when dry, ovate to ovatelanceolate, 1.4–2 mm;</span> <span class="statement" id="st-d0_s2" data-properties="margin orientation;margin architecture or shape">margins erect-incurved, entire;</span> <span class="statement" id="st-d0_s3" data-properties="apex shape">apex obtuse;</span> <span class="statement" id="st-d0_s4" data-properties="basal laminal cell shape;wall width;wall shape">basal laminal cells ± rectangular, walls thick, not nodose;</span> <span class="statement" id="st-d0_s5" data-properties="distal cell atypical some measurement;distal cell some measurement;distal cell architecture">distal cells 13–18 (–20) µm, 1-stratose, papillae 1 per cell, conic, large.</span> <span class="statement" id="st-d0_s6" data-properties="gemma reproduction"><b>Specialized </b>asexual reproduction by gemmae on both surfaces of leaf.</span> <span class="statement" id="st-d0_s7" data-properties="papilla quantity;papilla shape;papilla size;papilla development;papilla reproduction;papilla reproduction"><b>Sexual </b>condition dioicous.</span> <span class="statement" id="st-d0_s8" data-properties="seta some measurement"><b>Seta </b>0.5 mm.</span> <span class="statement" id="st-d0_s9" data-properties="capsule quantity;capsule location;capsule shape;capsule some measurement;capsule architecture or shape"><b>Capsule </b>1/2 emergent, oblong-cylindric, 1.6–2 mm, strongly 8-ribbed to base;</span> <span class="statement" id="st-d0_s10" data-properties="stoma position">stomata superficial;</span> <span class="statement" id="st-d0_s11" data-properties="">peristome double;</span> <span class="statement" id="st-d0_s12" data-properties="prostome presence">prostome absent;</span> <span class="statement" id="st-d0_s13" data-properties="exostome tooth quantity;exostome tooth orientation;exostome tooth relief;exostome tooth coloration or pubescence or relief">exostome teeth 8, reflexed, evenly papillose, sometimes irregularly striate distally;</span> <span class="statement" id="st-d0_s14" data-properties="endostome segment quantity;endostome segment development;endostome segment architecture or pubescence or relief;row quantity">endostome segments 8, well developed, of 2 rows of cells, smooth.</span> <span class="statement" id="st-d0_s15" data-properties="calyptra shape;calyptra relief;calyptra architecture;calyptra architecture or arrangement or shape or vernation"><b>Calyptra </b>short-conic, papillose, naked, not plicate.</span> <span class="statement" id="st-d0_s16" data-properties="spore some measurement"><b>Spores </b>20–25 µm.</span><!--

-->{{Treatment/Body
|habitat=Trunks of Populus, Juniperus, aspen, base of scrub oaks, river bottoms
|elevation=low to high elevations (10-2000 m)
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Iowa;Maine;Md.;Mich.;Minn.;Mont.;Nebr.;N.H.;N.Mex.;N.Y.;N.C.;N.Dak.;Oreg.;Pa.;S.Dak.;Utah;Vt.;Wash.;Wis.;Wyo.;Europe;Asia
|discussion=<p>Orthotrichum obtusifolium is a pronounced xerophyte growing only in pioneer situations. This species might be confused with O. exiguum, O. flowersii, and O. gymnostomum, but these species do not have distal laminal cells with one papilla per cell as do those of O. obtusifolium. In addition, O. exiguum and O. flowersii have reflexed to revolute leaf margins, and both are autoicous. Orthotrichum gymnostomum has distinctly involute leaf margins and concave leaves and is dioicous. The capsule stomata of O. obtusifolium are found at or beyond mid capsule.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Orthotrichum obtusifolium
|authority=Bridel
|rank=species
|parent rank=genus
|synonyms=Nyholmiella obtusifolia;Orthotrichum inflexum
|basionyms=
|family=Orthotrichaceae
|habitat=Trunks of Populus, Juniperus, aspen, base of scrub oaks, river bottoms
|elevation=low to high elevations (10-2000 m)
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Iowa;Maine;Md.;Mich.;Minn.;Mont.;Nebr.;N.H.;N.Mex.;N.Y.;N.C.;N.Dak.;Oreg.;Pa.;S.Dak.;Utah;Vt.;Wash.;Wis.;Wyo.;Europe;Asia
|reference=None
|publication title=Muscol. Recent.
|publication year=1801
|special status=Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V28/V28_80.xml
|genus=Orthotrichum
|species=Orthotrichum obtusifolium
|apex shape=obtuse
|basal laminal cell shape=rectangular
|calyptra architecture=naked
|calyptra architecture or arrangement or shape or vernation=not plicate
|calyptra relief=papillose
|calyptra shape=short-conic
|capsule architecture or shape=8-ribbed
|capsule location=emergent
|capsule quantity=1/2
|capsule shape=oblong-cylindric
|capsule some measurement=1.6mm;2mm
|distal cell architecture=1-stratose
|distal cell atypical some measurement=18um;20um
|distal cell some measurement=13um;18um
|endostome segment architecture or pubescence or relief=smooth
|endostome segment development=developed
|endostome segment quantity=8
|exostome tooth coloration or pubescence or relief=striate
|exostome tooth orientation=reflexed
|exostome tooth quantity=8
|exostome tooth relief=papillose
|gemma reproduction=asexual
|leaf-stem distance=1.4mm;2mm
|leaf-stem fixation or orientation=erect-appressed
|leaf-stem shape=ovate;ovatelanceolate
|margin architecture or shape=entire
|margin orientation=erect-incurved
|papilla development=specialized
|papilla quantity=1
|papilla reproduction=dioicous;sexual
|papilla shape=conic
|papilla size=large
|prostome presence=absent
|row quantity=2
|seta some measurement=0.5
|spore some measurement=20um;25um
|stoma position=superficial
|wall shape=not nodose
|wall width=thick
|whole_organism growth form=plant
|whole_organism some measurement=0.3cm;1.4cm
}}<!--

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