View source for Leptodictyum riparium

{{Treatment/ID
|accepted_name=Leptodictyum riparium
|accepted_authority=(Hedwig) Warnstorf
|publications={{Treatment/Publication
|title=Krypt.-Fl. Brandenburg
|place=2: 878. 1906
|year=1906
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Hypnum riparium
|authority=Hedwig
|rank=species
|publication_title=Sp. Musc. Frond.,
|publication_place=241. 1801
}}
|synonyms={{Treatment/ID/Synonym
|name=Amblystegium brevipes
|authority=Cardot & Thériot
|rank=species
}} {{Treatment/ID/Synonym
|name=A. riparium
|authority=(Hedwig) Schimper
|rank=species
}} {{Treatment/ID/Synonym
|name=A. riparium var. flaccidum
|authority=(Lesquereux & James) Renauld & Cardot
|rank=variety
}} {{Treatment/ID/Synonym
|name=A. riparium var. fluitans
|authority=(Lesquereux & James) Renauld & Cardot
|rank=variety
}} {{Treatment/ID/Synonym
|name=A. riparium var. longifolium
|authority=(Schultz) Schimper
|rank=variety
}} {{Treatment/ID/Synonym
|name=Brachythecium pennellii
|authority=(P. Beauvois) Brotherus
|rank=species
}} {{Treatment/ID/Synonym
|name=Campylium polygamum var. longinerve
|authority=(Renauld & Cardot) Grout
|rank=variety
}} {{Treatment/ID/Synonym
|name=Leptodictyum brevipes
|authority=Dixon & Grout
|rank=species
}} {{Treatment/ID/Synonym
|name=L. laxirete
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=L. riparium var. abbreviatum
|authority=(Schimper) Grout
|rank=variety
}} {{Treatment/ID/Synonym
|name=L. riparium var. brachyphyllum
|authority=(Cardot & Thériot) Grout
|rank=variety
}} {{Treatment/ID/Synonym
|name=L. riparium var. elongatum
|authority=(Schimper) Warnstorf
|rank=variety
}} {{Treatment/ID/Synonym
|name=L. riparium var. flaccidum
|authority=(Lesquereux & James) Grout
|rank=variety
}} {{Treatment/ID/Synonym
|name=L. sipho
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=L. vacillans
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Rhynchostegiella georgiana
|authority=
|rank=species
}}
|hierarchy=Amblystegiaceae;Leptodictyum;Leptodictyum riparium
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Amblystegiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Leptodictyum]]</div><div class="higher-taxon"><small>species</small>[[Leptodictyum riparium]]</div></div>
|volume=Volume 28
|mention_page=
|treatment_page=page 291
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>in flat, loose, long trailing mats, light green to yellow-brown. <b>Stems</b> 6–20 cm, flaccid, irregularly branched. <b>Leaves</b> erect- to wide-spreading or appearing distichous, somewhat complanate especially in branches, often obliquely attached to stem, slightly contorted when dry, 2.5–6 mm; margins entire; apex broadly short- to gradually long-acuminate; costa (45–)52–114 µm wide at base; alar region differentiated; basal laminal cell walls lax; distal cells (34–)42–117 × 7–12(–13) µm. <b>Seta</b> single, light to dark brown, 0.8–2.6 cm. <b>Capsule</b> brown to reddish, 2.2–2.5 mm; annulus deciduous, 2- or 3-seriate, cells large; operculum conic, apiculate; peristome yellow to brown. <b>Calyptra</b> naked.</span><!--

-->{{Treatment/Body
|habitat=Humus, logs, tree bases, swamps, wet depressions in forests, aquatic on rock in streams and rivers
|elevation=low to moderate elevations
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Ala.;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;Mexico;Central America;South America;Europe;Asia;Africa;Indian Ocean Islands;Pacific Islands;Australia.
|discussion=<p>As the specific epithet implies, <i>Leptodictyum riparium</i> occurs along rivers, often in flooded areas where the plants are stranded on tree bases in hardwood forests. The species is sometimes confused with another wetland species, <i>Drepanocladus aduncus</i>, which differs by its axillary hairs with 1–3 hyaline distal cells. There is tremendous morphological variability among the North American specimens of <i>L. riparium</i>, suggesting the existence of several ecotypes, which have been erroneously named as many varieties and forms in <i>Leptodictyum</i>, <i>Amblystegium</i>, and <i>Campylium</i>; these synonyms are summarized by A. J. Grout (1928–1940, vol. 3), H. S. Conard (1959), and H. A. Crum and L. E. Anderson (1981).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Leptodictyum riparium
|authority=(Hedwig) Warnstorf
|rank=species
|parent rank=genus
|synonyms=Amblystegium brevipes;A. riparium;A. riparium var. flaccidum;A. riparium var. fluitans;A. riparium var. longifolium;Brachythecium pennellii;Campylium polygamum var. longinerve;Leptodictyum brevipes;L. laxirete;L. riparium var. abbreviatum;L. riparium var. brachyphyllum;L. riparium var. elongatum;L. riparium var. flaccidum;L. sipho;L. vacillans;Rhynchostegiella georgiana
|basionyms=Hypnum riparium
|family=Amblystegiaceae
|habitat=Humus, logs, tree bases, swamps, wet depressions in forests, aquatic on rock in streams and rivers
|elevation=low to moderate elevations
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Ala.;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;Fla.;Ga.;Ill.;Ind.;Iowa;Kans.;La.;Maine;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;Nebr.;N.H.;N.J.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;Mexico;Central America;South America;Europe;Asia;Africa;Indian Ocean Islands;Pacific Islands;Australia.
|reference=None
|publication title=Krypt.-Fl. Brandenburg
|publication year=1906
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_454.xml
|genus=Leptodictyum
|species=Leptodictyum riparium
}}<!--

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