View source for Isopterygiopsis pulchella

{{Treatment/ID
|accepted_name=Isopterygiopsis pulchella
|accepted_authority=(Hedwig) Z. Iwatsuki
|publications={{Treatment/Publication
|title=J. Hattori Bot. Lab.
|place=63: 450. 1987
|year=1987
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Leskea pulchella
|authority=Hedwig
|rank=species
|publication_title=Sp. Musc. Frond.,
|publication_place=220, plate 55, figs. 7–12. 1801
}} {{Treatment/ID/Basionym
|name=Orthothecium diminutivum
|authority=Austin
|rank=species
|publication_title=Steere &amp; L. E. Anderson
|publication_place=
}}
|synonyms={{Treatment/ID/Synonym
|name=Holmgrenia diminutiva
|authority=Grout
|rank=species
}} {{Treatment/ID/Synonym
|name=Hypnum nitidulum
|authority=Wahlenberg
|rank=species
}} {{Treatment/ID/Synonym
|name=Isopterygium pulchellum
|authority=(Hedwig) A. Jaeger
|rank=species
}} {{Treatment/ID/Synonym
|name=I. pulchellum var. nitidulum
|authority=(Wahlenberg) Roth
|rank=variety
}} {{Treatment/ID/Synonym
|name=Plagiothecium passaicense
|authority=Kindberg
|rank=species
}} {{Treatment/ID/Synonym
|name=P. pseudolatebricola
|authority=(Hedwig) Schimper
|rank=species
}} {{Treatment/ID/Synonym
|name=P. pulchellum
|authority=
|rank=species
}}
|hierarchy=Hypnaceae;Isopterygiopsis;Isopterygiopsis pulchella
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hypnaceae]]</div><div class="higher-taxon"><small>genus</small>[[Isopterygiopsis]]</div><div class="higher-taxon"><small>species</small>[[Isopterygiopsis pulchella]]</div></div>
|volume=Volume 28
|mention_page=page 549, 550, 557
|treatment_page=page 551
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>in thin to dense mats, light green to yellowish. <b>Stems</b> 2 cm, 1–2 mm wide, not complanate-foliate; epidermal cells somewhat large, exterior walls thinner than interior, cortical cells in 1–several layers, smaller, walls thick. <b>Leaves</b> flaccid, erect-spreading, occasionally secund, close or sometimes distant, lanceolate to slenderly ovate-lanceolate, subconcave, 0.5–1.5 × 0.2–0.4 mm; margins plane to erect throughout, entire or sometimes minutely serrulate at apex, often 1 or 2 cells distinctly serrulate in alar region; apex gradually long-acuminate; alar cells quadrate to short-rectangular only on margins or sometimes not differentiated, 16–31 × 7–9 µm; medial laminal cells 96–156 × 5–7 µm. <b>Specialized</b> asexual reproduction rarely present as propagula, 33–61 × 9–14 µm, of 2–5 cells. <b>Sexual</b> condition autoicous. <b>Seta</b> red to reddish brown, 1–2 cm. <b>Capsule</b> subcernuous to cernuous, rarely erect, yellow to orange-brown, oblong to ovoid, straight to subarcuate, 0.5–2.5 mm; operculum conic to conic-apiculate, 0.2–0.3 mm. <b>Spores</b> 9–14 µm.</span><!--

-->{{Treatment/Body
|phenology=Capsules mature spring–late summer.
|habitat=Acidic cliff crevices, rocky banks, calcareous soil, soil on overturned tree roots, base of trees, decaying wood
|elevation=low to high elevations (10-2300 m)
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Maine;Mich.;Minn.;Mont.;N.H.;N.J.;N.Mex.;N.Y.;Oreg.;Pa.;S.Dak.;Utah;Vt.;Wash.;Wyo.;e Mexico;s South America;Europe;Asia;Africa;Pacific Islands (New Zealand).
|discussion=<p><i>Isopterygiopsis pulchella</i> is autoicous and often produces sporophytes; the other two species of <i>Isopterygiopsis</i> are dioicous and usually sterile. <i>Isopterygiopsis pulchella</i> is further distinguished by erect-spreading, sometimes secund, lanceolate to slenderly ovate-lanceolate, gradually acuminate, nondecurrent leaves with entire or minutely serrulate margins at the apex and base.</p><!--
--><p>The epidermal stem cells of <i>Isopterygiopsis alpicola</i> and <i>I. pulchella</i> are scarcely enlarged, somewhat thin-walled and not as distinctly differentiated from the interior cortical cells as those of <i>I. muelleriana</i>. All three species have papillose rhizoids and clusters of 2–6-celled cylindric or fusiform gemmae in the leaf axils; both characters readily place them in <i>Isopterygiopsis</i>. <i>Orthothecium intricatum</i> (Hartman) Schimper and <i>O. strictum</i> Lorentz may be confused with <i>I. pulchella</i> in the Arctic, but the former two species are dioicous and rarely produce sporophytes. Also, <i>Orthothecium</i> has mostly straight, erect-spreading leaves rather than secund leaves as in <i>I. pulchella</i>. The Utah record is that of S. Flowers (1973). W. A. Weber (pers. comm.) noted that O. diminutivum (Grout) H. A. Crum, Steere & L. E. Anderson (Holmgrenia diminutiva Grout) described from Colorado is synonymous with <i>I. pulchella</i> because of its papillose rhizoids and multicellular, cylindric brood bodies.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Isopterygiopsis pulchella
|authority=(Hedwig) Z. Iwatsuki
|rank=species
|parent rank=genus
|synonyms=Holmgrenia diminutiva;Hypnum nitidulum;Isopterygium pulchellum;I. pulchellum var. nitidulum;Plagiothecium passaicense;P. pseudolatebricola;P. pulchellum
|basionyms=Leskea pulchella;Orthothecium diminutivum
|family=Hypnaceae
|phenology=Capsules mature spring–late summer.
|habitat=Acidic cliff crevices, rocky banks, calcareous soil, soil on overturned tree roots, base of trees, decaying wood
|elevation=low to high elevations (10-2300 m)
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Maine;Mich.;Minn.;Mont.;N.H.;N.J.;N.Mex.;N.Y.;Oreg.;Pa.;S.Dak.;Utah;Vt.;Wash.;Wyo.;e Mexico;s South America;Europe;Asia;Africa;Pacific Islands (New Zealand).
|reference=None
|publication title=J. Hattori Bot. Lab.
|publication year=1987
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_857.xml
|genus=Isopterygiopsis
|species=Isopterygiopsis pulchella
}}<!--

-->[[Category:Treatment]][[Category:Isopterygiopsis]]