View source for Brachythecium rotaeanum

{{Treatment/ID
|accepted_name=Brachythecium rotaeanum
|accepted_authority=De Notaris
|publications={{Treatment/Publication
|title=Comment. Soc. Crittog. Ital.
|place=2: 285. 1867
|year=1867
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Brachythecium capillaceum
|authority=(F. Weber & D. Mohr) Giacomini
|rank=species
}} {{Treatment/ID/Synonym
|name=B. salebrosum var. capillaceum
|authority=(F. Weber & D. Mohr) Lorentz
|rank=variety
}} {{Treatment/ID/Synonym
|name=Chamberlainia rotaeana
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Hypnum salebrosum var. capillaceum
|authority=F. Weber & D. Mohr
|rank=variety
}}
|hierarchy=Brachytheciaceae;Brachythecium;Brachythecium rotaeanum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brachytheciaceae]]</div><div class="higher-taxon"><small>genus</small>[[Brachythecium]]</div><div class="higher-taxon"><small>species</small>[[Brachythecium rotaeanum]]</div></div>
|volume=Volume 28
|mention_page=page 415, 419
|treatment_page=page 426
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>medium-sized to moderately large, in loose to moderately dense mats, light green with somewhat bluish tinge, fading to yellowish green, then brownish stramineous. <b>Stems</b> to 7 cm, creeping but ascending from substrate, terete-foliate, irregularly branched, branches to 6 mm, straight to slightly curved, terete-foliate. <b>Stem</b> leaves erect to erect-appressed, imbricate, ovate-lanceolate, broadest at 1/10 leaf length, concave, not strongly plicate, plication variable in same plant, (1.7–)2–2.8 × 0.6–0.9 mm; base slightly narrowed, narrowly short-decurrent; margins plane or occasionally recurved at places, especially in transition to acumen and in leaf corners, almost entire to strongly serrate, dentition variable on same plant; apex gradually tapered or acuminate; costa to 60–75% leaf length, slender, terminal spine present or absent; alar cells subquadrate to short-rectangular, same size or smaller than basal cells, 12–20 × 10–12 µm, walls moderately thick, region indistinctly delimited, in several submarginal rows; laminal cells linear, 45–90(–120) × 6–10 µm; basal cells to 12–16(–19) µm wide, region in 5–8 rows, pellucid, markedly different from more distal cells. <b>Branch</b> leaves with margins usually strongly serrate. <b>Sexual</b> condition autoicous. <b>Seta</b> dark cherry red when young, red-brown with age, (1–)2.3 cm, smooth. <b>Capsule</b> occasionally inclined to horizontal and curved, cherry brown to very dark brown, elongate to subcylindric, straight proximally, somewhat curved distally, 1.8–2.3 mm; annulus separating by fragments; operculum long-conic, sometimes broadly short-rostrate. <b>Spores</b> 16–20 µm.</span><!--

-->{{Treatment/Body
|habitat=Trees, bases and inclined trunks, fresh logs, soil, rock
|elevation=low to high elevations (0-2900 m)
|distribution=B.C.;N.B.;Ont.;Ala.;Alaska;Conn.;Del.;Fla.;Ill.;Ind.;Iowa;Ky.;La.;Maine;Md.;Mich.;Minn.;Mo.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Tenn.;Vt.;Va.;W.Va.;Wis.;Eurasia.
|discussion=<p><i>Brachythecium rotaeanum</i> belongs to the <i>B. salebrosum</i> complex; many collections have been identified in herbaria as <i>B. salebrosum</i>. H. Robinson (1962) separated this species from <i>B. salebrosum</i> mainly by the homogeneous basal cells, somewhat similar to those of <i>B. laetum</i>. This is closer to the circumscription accepted here, although the basal cells of <i>B. rotaeanum</i>, which are rather large, should probably not be considered very similar to those of <i>B. laetum</i>, which are small and opaque. When growing protected from direct light, <i>B. rotaeanum</i> has a green and slightly glaucous color, often useful for recognition of it in the field. This color is more similar to that of <i>B. laetum</i> than of <i>B. salebrosum</i> (dirty yellowish) or <i>B. campestre</i> (stramineous to somewhat whitish). In the southern states, there is also a problem with the separation of small plants of <i>B. rotaeanum</i> from depressed phenotypes of <i>B. ruderale</i> with only branch leaves that are ovate-lanceolate with homogeneous cells across the leaf base. However, even in such phenotypes of <i>B. ruderale</i>, it is possible to find stem leaves that are abruptly long-acuminate; in addition, the latter species is dioicous, while <i>B. rotaeanum</i> is autoicous.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Brachythecium rotaeanum
|authority=De Notaris
|rank=species
|parent rank=genus
|synonyms=Brachythecium capillaceum;B. salebrosum var. capillaceum;Chamberlainia rotaeana;Hypnum salebrosum var. capillaceum
|basionyms=
|family=Brachytheciaceae
|habitat=Trees, bases and inclined trunks, fresh logs, soil, rock
|elevation=low to high elevations (0-2900 m)
|distribution=B.C.;N.B.;Ont.;Ala.;Alaska;Conn.;Del.;Fla.;Ill.;Ind.;Iowa;Ky.;La.;Maine;Md.;Mich.;Minn.;Mo.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Tenn.;Vt.;Va.;W.Va.;Wis.;Eurasia.
|reference=None
|publication title=Comment. Soc. Crittog. Ital.
|publication year=1867
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_662.xml
|genus=Brachythecium
|species=Brachythecium rotaeanum
}}<!--

-->[[Category:Treatment]][[Category:Brachythecium]]