View source for Grimmia donniana

{{Treatment/ID
|accepted_name=Grimmia donniana
|accepted_authority=Smith in J. E. Smith et al.
|publications={{Treatment/Publication
|title=in J. E. Smith et al., Engl. Bot.
|place=18: plate 1259. 1804,
}}
|basionyms=
|synonyms=
|hierarchy=Grimmiaceae;Grimmiaceae subfam. Grimmioideae;Grimmia;Grimmia subg. Guembelia;Grimmia donniana
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Grimmiaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Grimmiaceae subfam. Grimmioideae]]</div><div class="higher-taxon"><small>genus</small>[[Grimmia]]</div><div class="higher-taxon"><small>subgenus</small>[[Grimmia subg. Guembelia]]</div><div class="higher-taxon"><small>species</small>[[Grimmia donniana]]</div></div>
|volume=Volume 27
|mention_page=page 228, 229, 234, 237, 252
|treatment_page=page 236
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>in dense cushions, dark green to almost black. <b>Stems</b> 0.8–1.2(–1.5) cm, central strand present. <b>Leaves</b> oblong-lanceolate, 1–2.2 × 0.3–0.6 mm, keeled, not plicate, margins plane, awn 0.3–1.3 mm, costal transverse section prominent, semicircular; basal juxtacostal laminal cells long-rectangular, straight, thin-walled (rarely somewhat thick-walled); basal marginal laminal cells long-rectangular, straight, thin-walled, typically hyaline; medial laminal cells short-rectangular, sinuose, thick-walled; distal laminal cells commonly 2-stratose, occasionally only 1-stratose, not bulging, marginal cells 2-stratose, not bulging. <b>Sexual</b> condition autoicous, perichaetial leaves not enlarged. <b>Seta</b> straight, 2–3 mm. <b>Capsule</b> usually abundantly present, exserted, pale yellow-brown, oblong, exothecial cells quadrate, thin-walled, stomata present, annulus of 2 rows of quadrate, thick-walled cells, operculum mammillate to rostellate, peristome present, fully-developed, perforated in distal half.</span><!--

-->{{Treatment/Body
|habitat=Exposed, acidic granite and sandstone, forests, tundra
|elevation=moderate to high elevations (800-3700 m)
|distribution=Greenland;Alta.;B.C.;Nfld. and Labr. (Labr.);N.W.T.;Que.;Yukon;Alaska;Colo.;Idaho;Maine;Mich.;Mont.;N.H.;N.Y.;Oreg.;Utah;Wash.;Wyo.;Mexico;South America;Eurasia;Africa;Antarctic.
|discussion=<p><i>Grimmia donniana</i> is widespread but relatively uncommon and sporadic along the front ranges of the Rocky Mountains from Alberta south to southern Utah and Colorado. West of the Rockies it is known from a few locations in central Washington, northern Idaho, and northern Oregon. It is rare at higher latitudes, with a few records from Alaska, the Yukon, Northwest Territories, and Greenland. There are three disjunct populations in eastern North America: one in Michigan, one in the New England states and southern Quebec, and one in Labrador. Most specimens reported from British Columbia (R. R. Ireland et al. 1987) actually represent <i>G. alpestris</i>. <i>Grimmia donniana</i> is usually recognized by: (1) leaves with plane margins and (2) a hyaline rather uniform basal lamina with long-rectangular, thin-walled cells. The leaves of <i>G. montana</i>, while often incurved distally, may also have plane margins. The latter species, however, has quadrate to short-rectangular basal marginal cells that have thick end-walls and are rarely hyaline. It is also dioicous and lacks stomata. <i>Grimmia sessitana</i> can also have leaves with plane margins, but often one margin is recurved. Its basal marginal laminal cells are rectangular, like those of <i>G. donniana</i>, but they have thick rather than thin walls and are typically not hyaline. The leaf cells of <i>G. sessitana</i> are most often bulging, mammillose; those of <i>G. donniana</i> are not.</p>
|tables=
|references=
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-->{{#Taxon:
name=Grimmia donniana
|author=
|authority=Smith in J. E. Smith et al.
|rank=species
|parent rank=subgenus
|synonyms=
|basionyms=
|family=Grimmiaceae
|habitat=Exposed, acidic granite and sandstone, forests, tundra
|elevation=moderate to high elevations (800-3700 m)
|distribution=Greenland;Alta.;B.C.;Nfld. and Labr. (Labr.);N.W.T.;Que.;Yukon;Alaska;Colo.;Idaho;Maine;Mich.;Mont.;N.H.;N.Y.;Oreg.;Utah;Wash.;Wyo.;Mexico;South America;Eurasia;Africa;Antarctic.
|reference=None
|publication title=in J. E. Smith et al., Engl. Bot.
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V27/V27_321.xml
|subfamily=Grimmiaceae subfam. Grimmioideae
|genus=Grimmia
|subgenus=Grimmia subg. Guembelia
|species=Grimmia donniana
}}<!--

-->[[Category:Treatment]][[Category:Grimmia subg. Guembelia]]