View source for Hylocomiastrum

{{Treatment/ID
|accepted_name=Hylocomiastrum
|accepted_authority=M. Fleischer ex Brotherus in H. G. A. Engler et al.
|publications={{Treatment/Publication
|title=in H. G. A. Engler et al., Nat. Pflanzenfam. ed.
|place=2, 11: 486. 1925
|year=1925
}}
|basionyms=
|synonyms=
|hierarchy=Hylocomiaceae;Hylocomiastrum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hylocomiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Hylocomiastrum]]</div></div>
|etymology=Genus Hylocomium and Latin - astrum, incomplete resemblance
|volume=Volume 28
|mention_page=page 643, 648
|treatment_page=page 326
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>creeping, 1–3 mm wide across leafy stem, sympodial, remotely and irregularly pinnate to regularly 1- or 2-pinnate; paraphyllia many, base multiseriate, branches 1- or 2-seriate. <b>Stem</b> leaves erect to spreading, heteromallous, often remote, broadly ovate, ovate-deltoid, or ovate, strongly plicate (often obscuring costa), not rugose, 0.8–2.5 mm; base not cordate-clasping, not to somewhat decurrent; margins serrulate to nearly entire basally, spinose-serrate to serrate in distal 2/3; apex acute to acuminate; costa single, double, or rarely triple, sometimes 2-fid, 1/3–3/4 leaf length; alar cells not differentiated; laminal cells smooth. <b>Branch</b> leaves ovate to lanceolate; costa single, double, or 2-fid, 1/2–3/4 leaf length. <b>Capsule</b> inclined to horizontal; operculum conic; exostome teeth irregularly cross striolate to somewhat reticulate proximally; endostome segments narrowly perforate.</span><!--

-->{{Treatment/Body
|distribution=North America;Eurasia;n Africa;cool temperate and boreal regions.
|discussion=<p>Species 3 (2 in the flora).</p><!--
--><p>Proximal stem and branch leaves of <i>Hylocomiastrum</i> are distinctly shorter than the more distal and have nearly entire margins, acute to bluntly apiculate apices, and weaker costae. <i>Hylocomiastrum</i> differs from <i>Hylocomium</i>, with which it is often combined, in having shorter-branched paraphyllia, strongly plicate leaves, strong costae that are often single and end in a spine, smooth laminal cells, endostome segments with narrow perforations, and conic-apiculate opercula. The third species in the genus, <i>Hylocomiastrum</i> himalayanum (Mitten) Brotherus, is known from Asia.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Stem leaves erect to erect-spreading, loosely imbricate, ovate to elliptic-ovate, usually longer than 1.7 mm; branch leaves longer than 1.2 mm; costae single.
|[[Hylocomiastrum pyrenaicum|Hylocomiastrum pyrenaicum]]
|-id=key-0-1
|1
|Stem leaves erect-spreading to wide-spreading, distant, broadly ovate to deltoid, usually shorter than 2 mm; branch leaves shorter than 1.2 mm; costae usually double in stem leaves, single in branch leaves, but variable.
|[[Hylocomiastrum umbratum|Hylocomiastrum umbratum]]
|}
</div></div><!--

-->{{#Taxon:
name=Hylocomiastrum
|authority=M. Fleischer ex Brotherus in H. G. A. Engler et al.
|rank=genus
|parent rank=family
|synonyms=
|basionyms=
|family=Hylocomiaceae
|distribution=North America;Eurasia;n Africa;cool temperate and boreal regions.
|reference=None
|publication title=in H. G. A. Engler et al., Nat. Pflanzenfam. ed.
|publication year=1925
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V28/V28_507.xml
|genus=Hylocomiastrum
}}<!--

-->[[Category:Treatment]][[Category:Hylocomiaceae]]