View source for Pogonatum urnigerum

{{Treatment/ID
|accepted_name=Pogonatum urnigerum
|accepted_authority=(Hedwig) P. Beauvois
|publications={{Treatment/Publication
|title=Prodr. Aethéogam.,
|place=84. 1805,
}}
|basionyms={{Treatment/ID/Basionym
|name=Polytrichum urnigerum
|authority=Hedwig
|rank=species
|publication_title=Sp. Musc. Frond.,
|publication_place=100, plate 22, figs. 5–7. 1801
}}
|synonyms=
|hierarchy=Polytrichaceae;Pogonatum;Pogonatum urnigerum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polytrichaceae]]</div><div class="higher-taxon"><small>genus</small>[[Pogonatum]]</div><div class="higher-taxon"><small>species</small>[[Pogonatum urnigerum]]</div></div>
|volume=Volume 27
|mention_page=page 15, 126, 155, 156, 159
|treatment_page=page 158
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>medium to robust, in loose tufts or scattered among other mosses, green to glaucous green, brownish with age. <b>Stems</b> 2–5 cm, commonly branching by innovations, frequently dendroid. <b>Leaves</b> 2.5–6 mm, densely imbricate and crowded toward the stem and branch tips, erect-appressed and somewhat incurved when dry, reflexed and widely spreading when moist, gradually to rather abruptly contracted to the blade, the hinge-cells sharply differentiated; sheath ovate to obovate, hyaline-margined on the flanks, with a wedge of incrassate hinge cells at the shoulders and extending a short distance up the blade margin; blade broadly oblong-lanceolate to narrowly linear-lanceolate, only slightly concave, toothed from apex almost to the shoulders, or sometimes subentire; costa percurrent or slightly excurrent as a subulate, serrate to smooth point, smooth abaxially or sparingly toothed towards the tip; lamellae 30–46, entire in profile, 4–7 cells high, the marginal cells enlarged, thick-walled and coarsely papillose, in section rounded to elliptical, broader than high, the distal wall broadly convex, the lumen rounded pentagonal; sheath cells short-rectangular to ± isodiametric approaching the blade; cells on abaxial surface of blade 24–27 µm, irregularly quadrate, ± isodiametric, thick-walled, the transverse walls often thicker. <b>Seta</b> 1–4 cm, typically one per perichaetium but several per plant at the tips of branches. <b>Capsule</b> 2–3 mm, short-cylindric to ovate-cylindric, erect to inclined, light brown to reddish brown to blackish with age; exothecium mammillose, densely areolate, the cells rounded quadrate, incrassate, with slit-like pits in the outer wall; peristome 300–350 µm, divided to 0.6, the teeth rather broad, reddish brown with hyaline margins. <b>Spores</b> 10–18 µm.</span><!--

-->{{Treatment/Body
|habitat=Disturbed sandy or gravelly soil on stream banks, roadsides, crevices of cliffs and boulders, and in late snow areas
|elevation=moderate to high elevations
|distribution=Greenland;Alta.;B.C.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Colo.;Idaho;Mont.;N.H.;N.Y.;Oreg.;Tenn.;Vt.;Wash.;Wis.;Europe;Caucasus;Siberia;e Asia (Philippines;New Guinea.);Atlantic Islands (Iceland).
|discussion=<p>The most widely distributed species of the genus, <i>Pogonatum urnigerum</i> is notably absent from Middle America and south-temperate South America. In Nunavut, it is known from Baffin, Ellesmere, and Melville islands. The plants are usually more robust than are those of <i>P. dentatum</i>, often repeatedly branched, and the crowding of the leaves at the tips of the branches produces a distinctive tiered effect. The marginal cells of the lamellae are rounded in section, and the lumen is pentagonal, resembling the gable end of a house. Fruiting plants of the two species can be easily distinguished also by the peristome, which in <i>P. dentatum</i> is deeply divided almost to the base. <i>Polytrichastrum alpinum</i> also branches repeatedly, but the plants are generally larger and absent the bluish glaucous appearance characteristic of <i>P. urnigerum</i> in the field.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Pogonatum urnigerum
|authority=(Hedwig) P. Beauvois
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Polytrichum urnigerum
|family=Polytrichaceae
|habitat=Disturbed sandy or gravelly soil on stream banks, roadsides, crevices of cliffs and boulders, and in late snow areas
|elevation=moderate to high elevations
|distribution=Greenland;Alta.;B.C.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Colo.;Idaho;Mont.;N.H.;N.Y.;Oreg.;Tenn.;Vt.;Wash.;Wis.;Europe;Caucasus;Siberia;e Asia (Philippines;New Guinea.);Atlantic Islands (Iceland).
|reference=None
|publication title=Prodr. Aethéogam.,
|publication year=
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V27/V27_198.xml
|genus=Pogonatum
|species=Pogonatum urnigerum
}}<!--

-->[[Category:Treatment]][[Category:Pogonatum]]