View source for Homalothecium megaptilum

{{Treatment/ID
|accepted_name=Homalothecium megaptilum
|accepted_authority=(Sullivant) H. Robinson
|publications={{Treatment/Publication
|title=Bryologist
|place=65: 100. 1963
|year=1963
}}
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Camptothecium megaptilum
|authority=Sullivant
|rank=species
|publication_title=Icon. Musc., suppl.,
|publication_place=102, plate 78. 1874
}}
|synonyms={{Treatment/ID/Synonym
|name=Trachybryum megaptilum
|authority=(Sullivant) W. B. Schofield
|rank=species
}}
|hierarchy=Brachytheciaceae;Homalothecium;Homalothecium megaptilum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brachytheciaceae]]</div><div class="higher-taxon"><small>genus</small>[[Homalothecium]]</div><div class="higher-taxon"><small>species</small>[[Homalothecium megaptilum]]</div></div>
|volume=Volume 28
|mention_page=page 440, 444, 445
|treatment_page=page 446
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>very large, in loose mats, pale whitish yellow, in deep shade often green. <b>Stems</b> to 15 cm, regularly pinnate in one plane, branches to 15–20(–30) mm, straight to slightly curved. <b>Stem</b> leaves erect, triangular-ovate to broadly ovate-lanceolate, 3.5–4.5 × 1–1.8 mm; base slightly narrowed, narrowly decurrent; margins plane or recurved in places, serrulate throughout or occasionally subentire; apex gradually tapered, apiculate; costa to 70–90% leaf length, terminal spine sometimes present; alar cells elongate, 50 × 9 µm, region in up to 6 rows; laminal cells linear, 60–110 × 4–6 µm; basal cells elongate, region in 2 or 3 rows, gradually differentiated from distal cells. <b>Branch</b> leaves erect when dry or moist, oblong, narrower than stem leaves, to 3 × 0.8 mm in proximal portions of branches, smaller to minute near branch bases; margins plane to very narrowly recurved at places, more strongly serrulate; apex acute, sometimes blunt; costa to 70–90% leaf length, terminal spine absent; laminal cells very narrow, 50–95 × 4–5 µm; basal cells in fewer rows than those in stem leaves; distal cells smooth. <b>Sexual</b> condition dioicous or phyllodioicous. <b>Seta</b> to 2.5 cm, rough. <b>Capsule</b> horizontal, ovoid-oblong, curved, to 2.5 mm; annulus separating by fragments; operculum long-conic; peristome xerocastique, perfect; exostome teeth with long transitional zone; endostome basal membrane high, segments as long as exostome teeth, narrow, cilia as long as segments, appendiculate. <b>Spores</b> 10–20 µm.</span><!--

-->{{Treatment/Body
|habitat=Litter in coniferous forests, among grasses in open sites, logs, rock
|elevation=low to moderate elevations (60-1300 m)
|distribution=B.C.;Calif.;Idaho;Mont.;Oreg.;Wash.
|discussion=<p><i>Homalothecium megaptilum</i> is easily recognizable by its large size, regular pinnate branching in one plane when wet, and usually very pale color. The stems coil upward when dry and flatten when moist; the stem leaf apiculus is often somewhat blunt, hooklike, and recurved or incurved; the basal laminal cells are porose; and the sporophytes are infrequent.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Homalothecium megaptilum
|authority=(Sullivant) H. Robinson
|rank=species
|parent rank=genus
|synonyms=Trachybryum megaptilum
|basionyms=Camptothecium megaptilum
|family=Brachytheciaceae
|habitat=Litter in coniferous forests, among grasses in open sites, logs, rock
|elevation=low to moderate elevations (60-1300 m)
|distribution=B.C.;Calif.;Idaho;Mont.;Oreg.;Wash.
|reference=None
|publication title=Bryologist
|publication year=1963
|special status=Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_694.xml
|genus=Homalothecium
|species=Homalothecium megaptilum
}}<!--

-->[[Category:Treatment]][[Category:Homalothecium]]