View source for Homalothecium nuttallii

{{Treatment/ID
|accepted_name=Homalothecium nuttallii
|accepted_authority=(Wilson) A. Jaeger
|publications={{Treatment/Publication
|title=Ber. Thätigk. St. Gallischen Naturwiss. Ges.
|place=1876 – 1877: 310. 1878
|year=1878
}}
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms={{Treatment/ID/Basionym
|name=Hypnum nuttallii
|authority=Wilson
|rank=species
|publication_title=Bryol. Brit.,
|publication_place=334, 339. 1855
}}
|synonyms=
|hierarchy=Brachytheciaceae;Homalothecium;Homalothecium nuttallii
|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 nuttallii]]</div></div>
|volume=Volume 28
|mention_page=page 440, 442
|treatment_page=page 443
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>small to medium-sized, in dense tufts, light green when young, golden or brownish yellow with age. <b>Stems</b> to 5(–10) cm, densely pinnate, branches 3–5 mm, curved and secund away from substrate. <b>Stem</b> leaves erect-appressed, ± homomallous, triangular-lanceolate, 1–2(–2.5) × (0.2–)0.4–0.7(–0.8) mm; base short-rounded, narrowly decurrent; margins plane or often recurved in places, minutely serrulate to subentire, teeth in alar region small, conspicuous, recurved; apex long-acuminate, acumen filiform, providing hyaline-villous aspect; costa to 70–90% leaf length, often vanishing in plication, terminal spine sometimes present; alar cells subquadrate, 6–7 µm wide, region of 6–9 × 5–8 cells, distinctly delimited, not reaching margins; laminal cells linear-flexuose, 35–95 × 4–6 µm; basal cell shape irregular, short, region in 2 rows, indistinctly delimited from more distal cells. <b>Branch</b> leaves appressed when dry, spreading when moist, narrowly lanceolate, (0.5–)0.7–1.7 × (0.1–)0.2–0.4 mm; margins plane or recurved at places, serrulate or serrate proximally, entire or minutely serrulate distally, teeth in alar region conspicuously recurved; apex acuminate; costa to 70–90% leaf length, disappearing in acumen, terminal spine sometimes present; alar cells subquadrate, 6–7 µm wide, region small, distinctly delimited; laminal cells linear-flexuose, 25–85 × 4–6 µm; basal cells in 1 (or 2) rows; distal cells smooth. <b>Sexual</b> condition phyllodioicous or dioicous. <b>Seta</b> 0.7–1.5 cm, rough. <b>Capsule</b> erect, cylindric, sometimes slightly curved, 2–2.5 mm; annulus separating by fragments; operculum long-conic; peristome hygrocastique; exostome teeth with long transitional zone; endostome basal membrane high, segments as long as teeth, very narrow, cilia very short or absent. <b>Spores</b> dimorphic; 10–14 µm or 16–20 µm.</span><!--

-->{{Treatment/Body
|habitat=Epiphytic on trunks and branches of hardwood trees and Douglas fir, forests and open stands, especially Quercus garryana, rock, rotten logs
|elevation=low to high elevations (0-1600 m)
|distribution=B.C.;Alaska;Calif.;Oreg.;Wash.
|discussion=<p>A. J. Grout (1928–1940, vol. 3) reported <i>Homalothecium nuttallii</i> from Idaho and Montana, but H. Hofmann (1998) found that these specimens are <i>H. nevadense</i>. E. Lawton (1965) did not cite H. nuttalii for these states. The species can be recognized in the field by the relatively narrow, leafy branches. Also, the branch leaves are distally filiform and, when dry, look hyaline-villous, resembling species of <i>Fabronia</i>. Under the microscope, the recurved teeth of leaf margins allow immediate species identification. The branch leaves may be straight, homomallous, or falcate-secund; the small spores are smooth, the larger papillose.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Homalothecium nuttallii
|authority=(Wilson) A. Jaeger
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Hypnum nuttallii
|family=Brachytheciaceae
|habitat=Epiphytic on trunks and branches of hardwood trees and Douglas fir, forests and open stands, especially Quercus garryana, rock, rotten logs
|elevation=low to high elevations (0-1600 m)
|distribution=B.C.;Alaska;Calif.;Oreg.;Wash.
|reference=None
|publication title=Ber. Thätigk. St. Gallischen Naturwiss. Ges.
|publication year=1878
|special status=Endemic;Illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V28/V28_687.xml
|genus=Homalothecium
|species=Homalothecium nuttallii
}}<!--

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