View source for Polytrichastrum ohioense

{{Treatment/ID
|accepted_name=Polytrichastrum ohioense
|accepted_authority=(Renauld & Cardot) G. L. Smith
|publications={{Treatment/Publication
|title=Mem. New York Bot. Gard.
|place=21(3): 35. 1971,
}}
|basionyms={{Treatment/ID/Basionym
|name=Polytrichum ohioense
|authority=Renauld & Cardot
|rank=species
|publication_title=Rev. Bryol.
|publication_place=12: 11. 1885
}}
|synonyms=
|hierarchy=Polytrichaceae;Polytrichastrum;Polytrichastrum ohioense
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polytrichaceae]]</div><div class="higher-taxon"><small>genus</small>[[Polytrichastrum]]</div><div class="higher-taxon"><small>species</small>[[Polytrichastrum ohioense]]</div></div>
|volume=Volume 27
|mention_page=page 125, 132, 133
|treatment_page=page 131
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism fragility;whole_organism coloration;whole_organism growth form;whole_organism growth form;tuft architecture or fragility"><b>Plants </b>moderately robust, dark-green to brown plants in loose tufts.</span> <span class="statement" id="st-d0_s1" data-properties="stem height;stem height;stem architecture"><b>Stems </b>1.5–3 (–6) cm high, usually unbranched, sparsely radiculose at or near the base.</span> <span class="statement" id="st-d0_s2" data-properties="leaf some measurement;leaf orientation;leaf fixation or orientation;tip orientation;tip orientation;tip orientation"><b>Leaves </b>6–10 mm, erect and loosely appressed with recurved tips when dry, spreading and broadly recurved when moist;</span> <span class="statement" id="st-d0_s3" data-properties="sheath shape;sheath architecture;sheath coloration;sheath condition or size;hinge variability">sheath ovoid, hyaline-margined, golden brown, contracted to the blade, the cells at the shoulders forming a differentiated hinge;</span> <span class="statement" id="st-d0_s4" data-properties="blade shape;blade shape;blade shape;awn height or length or size;awn coloration;awn shape">blade long-lanceolate, coarsely toothed at least in distal 2/3, acuminate, ending in a short, reddish, toothed awn;</span> <span class="statement" id="st-d0_s5" data-properties="costa architecture;costa shape">costa shortly excurrent, sparsely toothed abaxially near the tip;</span> <span class="statement" id="st-d0_s6" data-properties="marginal lamina architecture;marginal lamina size or width;marginal lamina orientation">marginal lamina 1-stratose, narrow, mostly erect;</span> <span class="statement" id="st-d0_s7" data-properties="lamella quantity;bud height;bud architecture or shape;side course;side arrangement or shape;side shape;side arrangement or shape;section arrangement or shape;lumen size;wall fusion;wall size or width;wall coloration;wall architecture or pubescence or relief;wall relief">lamellae 6–7 cells high, entire in side view, with nearly straight sides when viewed from above, the terminal cells in section rounded or more often transversely elliptical, ± flattopped, with a much smaller lumen than the others and the free wall conspicuously thickened, often brownish, smooth, sometimes finely striate-papillose;</span> <span class="statement" id="st-d0_s8" data-properties="sheath bud length;sheath bud width;sheath bud quantity;sheath bud quantity">sheath cells 40–50 × 16–20 µm (3:1);</span> <span class="statement" id="st-d0_s9" data-properties="sheath bud length;sheath bud width;sheath bud quantity;bud some measurement;bud shape">cells of marginal lamina 12–15 µm, subquadrate;</span> <span class="statement" id="st-d0_s10" data-properties="sheath bud length;sheath bud width;sheath bud quantity;base length or size;base architecture or shape;awn prominence;awn coloration">perichaetial leaves with long, sheathing bases and conspicuous golden yellow awns.</span> <span class="statement" id="st-d0_s11" data-properties="seta some measurement;seta fragility or size;seta coloration;seta length or size;shoot architecture"><b>Seta </b>2–9 cm, stout, yellowish, much longer than the leafy shoots.</span> <span class="statement" id="st-d0_s12" data-properties="capsule some measurement;capsule coloration;capsule orientation;capsule shape"><b>Capsule </b>3–5 mm, pale-brown, suberect to strongly inclined, 4-angled;</span> <span class="statement" id="st-d0_s13" data-properties="hypophysis shape;hypophysis prominence">hypophysis cylindric but not sharply delimited;</span> <span class="statement" id="st-d0_s14" data-properties="exothecial bud pubescence or shape;exothecial bud relief;central spot width">exothecial cells not bulging or mammillose, without a central thin spot;</span> <span class="statement" id="st-d0_s15" data-properties="stoma quantity">stomata numerous, on the distal part of the hypophysis;</span> <span class="statement" id="st-d0_s16" data-properties="peristome some measurement;peristome shape;peristome quantity;tooth quantity;tooth coloration">peristome 300 µm, divided to 0.6, the teeth ca. 50, pale-brown.</span> <span class="statement" id="st-d0_s17" data-properties="spore some measurement"><b>Spores </b>11–14 µm.</span><!--

-->{{Treatment/Body
|habitat=Soil, humus, rocks, dry to moist woods
|elevation=low to moderate elevations
|distribution=Ont.;Ala.;Ark.;Conn.;Del.;Ga.;Ill.;Ind.;Iowa;Kans.;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;N.J.;N.Mex.;N.Y.;N.C.;Ohio;Okla.;Pa.;R.I.;Tenn.;Va.;W.Va.;Wis.
|discussion=<p>Polytrichastrum ohioense is endemic to eastern North America, and is common in the Appalachian mixed oak (formerly oak-chestnut) forest, the oak-hickory forest of the interior United States (to eastern Kansas and Oklahoma), the oak-pine forests of the Atlantic coastal plain, and the maple-beech forest in Indiana, Ohio, southern Michigan, and Ontario. At higher elevations and in more northerly latitudes in coniferous forests, it is replaced by P. pallidisetum. An isolated population of P. ohioense occurs in a wooded canyon in the San Andres Mountains, northeast of Las Cruces, New Mexico. In the field, P. ohioense has a distinctive appearance. The seta typically far exceeds the leafy shoots in length, and the perichaetial leaves have conspicuous rough, golden yellow awns. The transversely elliptical, thick-walled marginal cells of the lamellae are also unique to this species. In side view the lamellae are entire, and the lumen greatly restricted. In P. pallidisetum the terminal cells of the lamellae are flat-topped to shallowly retuse, and in side view the lamellae are crenulate, their marginal cells not notably thick-walled.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Polytrichastrum ohioense
|authority=(Renauld & Cardot) G. L. Smith
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Polytrichum ohioense
|family=Polytrichaceae
|habitat=Soil, humus, rocks, dry to moist woods
|elevation=low to moderate elevations
|distribution=Ont.;Ala.;Ark.;Conn.;Del.;Ga.;Ill.;Ind.;Iowa;Kans.;Md.;Mass.;Mich.;Minn.;Miss.;Mo.;N.J.;N.Mex.;N.Y.;N.C.;Ohio;Okla.;Pa.;R.I.;Tenn.;Va.;W.Va.;Wis.
|reference=None
|publication title=Mem. New York Bot. Gard.
|publication year=
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V27/V27_160.xml
|genus=Polytrichastrum
|species=Polytrichastrum ohioense
|awn coloration=golden yellow;reddish
|awn height or length or size=short
|awn prominence=conspicuous
|awn shape=toothed
|base architecture or shape=sheathing
|base length or size=long
|blade shape=acuminate;toothed;long-lanceolate
|bud architecture or shape=entire
|bud height=high
|bud shape=subquadrate
|bud some measurement=12um;15um
|capsule coloration=pale-brown
|capsule orientation=suberect;strongly inclined
|capsule shape=4-angled
|capsule some measurement=3mm;5mm
|central spot width=thin
|costa architecture=excurrent
|costa shape=toothed
|exothecial bud pubescence or shape=not bulging
|exothecial bud relief=mammillose
|hinge variability=differentiated
|hypophysis prominence=delimited
|hypophysis shape=cylindric
|lamella quantity=6;7
|leaf fixation or orientation=appressed
|leaf orientation=erect
|leaf some measurement=6mm;10mm
|lumen size=smaller
|marginal lamina architecture=1-stratose
|marginal lamina orientation=erect
|marginal lamina size or width=narrow
|peristome quantity=0.6
|peristome shape=divided
|peristome some measurement=300
|section arrangement or shape=elliptical
|seta coloration=yellowish
|seta fragility or size=stout
|seta length or size=much longer
|seta some measurement=2cm;9cm
|sheath architecture=hyaline-margined
|sheath bud length=40um;50um
|sheath bud quantity=3;3;1;3
|sheath bud width=16um;20um
|sheath coloration=golden brown
|sheath condition or size=contracted
|sheath shape=ovoid
|shoot architecture=leafy
|side arrangement or shape=elliptical;elliptical
|side course=straight
|side shape=rounded
|spore some measurement=11um;14um
|stem architecture=unbranched
|stem height=1.5cm;3cm
|stoma quantity=numerous
|tip orientation=recurved;spreading;recurved
|tooth coloration=pale-brown
|tooth quantity=50
|tuft architecture or fragility=loose
|wall architecture or pubescence or relief=smooth
|wall coloration=brownish
|wall fusion=free
|wall relief=striate-papillose
|wall size or width=thickened
|whole_organism coloration=dark-green;brown
|whole_organism fragility=robust
|whole_organism growth form=plant;plant
}}<!--

-->[[Category:Treatment]][[Category:Polytrichastrum]]