View source for Orthotrichum pumilum

{{Treatment/ID
|accepted_name=Orthotrichum pumilum
|accepted_authority=Swartz
|publications={{Treatment/Publication
|title=Monthly Rev.
|place=34: 538. 1801
|year=1801
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Orthotrichum affine var. fallax
|authority=(Bridel) Hampe
}} {{Treatment/ID/Synonym
|name=O. brachytrichum
|authority=Bridel
}} {{Treatment/ID/Synonym
|name=O. fallax
|authority=Hammar
}} {{Treatment/ID/Synonym
|name=O. fallax var. truncatulum
|authority=Austin
}} {{Treatment/ID/Synonym
|name=O. pumilum var. americanum
|authority=Venturi
}} {{Treatment/ID/Synonym
|name=O. pumilum subsp. fallax
|authority=(Bridel) Bertsch
}} {{Treatment/ID/Synonym
|name=O. pumilum var. fallax
|authority=(Bridel) J. Kickx f.
}} {{Treatment/ID/Synonym
|name=O. schimperi
|authority=unknown
}} {{Treatment/ID/Synonym
|name=O. schimperi var. truncatulum
|authority=(Austin) Paris
}} {{Treatment/ID/Synonym
|name=O. tenellum var. pumilum
|authority=(Swartz) Boulin
}}
|hierarchy=Orthotrichaceae;Orthotrichum;Orthotrichum pumilum
|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 pumilum]]</div></div>
|volume=Volume 28
|mention_page=page 49, 54, 55, 64, 69
|treatment_page=page 63
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>to 0.5 cm. <b>Stem</b> leaves stiff, loosely erect-appressed when dry, ovate-lanceolate to lanceolate, 1.8–2.8 mm; margins revolute nearly to apex, entire; apex sharply to slenderly acute, usually apiculate, rarely obtuse, not carinate, not incurved when dry; basal laminal cells rectangular, grading to quadrate at margin, walls thin, not nodose; distal cells 14–20 µm, 1-stratose, lumina smooth, rounded, smooth or papillae 1 or 2 per cell, conic, small. <b>Specialized</b> asexual reproduction occasional, by gemmae on leaves. <b>Sexual</b> condition autoicous. <b>Vaginula</b> with hairs absent. <b>Seta</b> to 0.5 mm. <b>Capsule</b> immersed to 3/4 emergent, oblong to oblong-cylindric, 1.2–1.5 mm, strongly 8-ribbed, sometimes constricted below mouth when dry; stomata immersed, mid capsule, not or to 1/2 covered by subsidiary cells, cells projecting or not, inner walls thickened or not; peristome double; prostome absent; exostome teeth 8, rarely splitting to 16, reflexed, finely and evenly papillose; endostome segments 8, not well developed, of 1 or 2 rows of cells, smooth. <b>Calyptra</b> oblong, smooth, sparsely hairy or rarely naked, hairs smooth. <b>Spores</b> 14–21 µm.</span><!--

-->{{Treatment/Body
|habitat=Trunks, lower branches, base of deciduous trees, coniferous trees, crevices of rock, open, hardwood forests, trees along roadsides
|elevation=low to moderate elevations (10-1000 m)
|distribution=Alta.;Man.;Ont.;Sask.;Ariz.;Calif.;Colo.;D.C.;Idaho;Ill.;Iowa;Kans.;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Okla.;Pa.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Europe;n Africa.
|discussion=<p><i>Orthotrichum pumilum</i> usually can be distinguished by the strongly ribbed capsules, reflexed peristome teeth, apiculate leaves with cells larger than 14 µm, and papillae that are very small or absent. In eastern North America, this taxon is uniform and non-variable, but in the West it is much more variable. Many western specimens have capsules that are oblong-cylindric, often strangulate, over 1/2 emergent, and gradually contracted to the seta.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Orthotrichum pumilum
|author=
|authority=Swartz
|rank=species
|parent rank=genus
|synonyms=Orthotrichum affine var. fallax;O. brachytrichum;O. fallax;O. fallax var. truncatulum;O. pumilum var. americanum;O. pumilum subsp. fallax;O. pumilum var. fallax;O. schimperi;O. schimperi var. truncatulum;O. tenellum var. pumilum
|basionyms=
|family=Orthotrichaceae
|habitat=Trunks, lower branches, base of deciduous trees, coniferous trees, crevices of rock, open, hardwood forests, trees along roadsides
|elevation=low to moderate elevations (10-1000 m)
|distribution=Alta.;Man.;Ont.;Sask.;Ariz.;Calif.;Colo.;D.C.;Idaho;Ill.;Iowa;Kans.;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Mont.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Okla.;Pa.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Europe;n Africa.
|reference=None
|publication title=Monthly Rev.
|publication year=1801
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V28/V28_90.xml
|genus=Orthotrichum
|species=Orthotrichum pumilum
}}<!--

-->[[Category:Treatment]][[Category:Orthotrichum]]