View source for Grimmia longirostris

{{Treatment/ID
|accepted_name=Grimmia longirostris
|accepted_authority=Hooker
|publications={{Treatment/Publication
|title=Musci Exot.
|place=1: plate 62. 1818,
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Grimmia affinis
|authority=Hornschuch
}} {{Treatment/ID/Synonym
|name=Grimmia arctophila subsp. labradorica
|authority=Kindberg
}} {{Treatment/ID/Synonym
|name=Grimmia catalinensis
|authority=Kindberg
}} {{Treatment/ID/Synonym
|name=Grimmia catalinensis var. mutica
|authority=Bartram
}} {{Treatment/ID/Synonym
|name=Grimmia elata
|authority=Kindberg
}} {{Treatment/ID/Synonym
|name=Grimmia ortholoma
|authority=unknown
}} {{Treatment/ID/Synonym
|name=Grimmia ovalis var. affinis
|authority=(Hornschuch) Brotherus
}} {{Treatment/ID/Synonym
|name=Grimmia ovata var. affinis
|authority=(Hornschuch) Bruch & Schimper
}} {{Treatment/ID/Synonym
|name=Grimmia ovateoformis
|authority=unknown
}}
|hierarchy=Grimmiaceae;Grimmiaceae subfam. Grimmioideae;Grimmia;Grimmia subg. Guembelia;Grimmia longirostris
|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 longirostris]]</div></div>
|volume=Volume 27
|mention_page=page 230, 240, 241, 245, 259, 260
|treatment_page=page 239
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>in compact cushions, yellow-green to dark olivaceous. <b>Stems</b> 1–3 cm, central strand strong. <b>Leaves</b> ovate-lanceolate, 1.5–3 × 0.6–0.7 mm, keeled, one margin recurved proximally, not sheathing, awn 0.5–1.5 mm, costal transverse section prominent, reniform; basal juxtacostal laminal cells long-rectangular to linear, sinuose, thick-walled; basal marginal laminal cells short-rectangular, straight, with thick transverse and thin lateral walls, hyaline; medial laminal cells short-rectangular, sinuose, thick-walled; distal laminal cells 2-stratose, not bulging, marginal cells 2-stratose, not bulging. <b>Sexual</b> condition cladautoicous, perichaetial leaves not enlarged. <b>Seta</b> straight, (1–)2–4 mm. <b>Capsule</b> usually present, (emergent to) exserted, yellow, oblong-ovoid to cylindric, exothecial cells short- to long-rectangular, thin-walled, stomata present in 2–3 rows, annulus of 2 rows of rectangular, thick-walled cells, operculum long-rostrate, peristome present, fully-developed, split and perforate in distal half.</span><!--

-->{{Treatment/Body
|habitat=Exposed, dry, acidic granite and quartzite
|elevation=low to high eleavations (100-3100 m)
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Maine;Minn.;Mont.;Nev.;N.H.;N.Mex.;N.C.;Okla.;Oreg.;S.Dak.;Tex.;Utah;Vt.;Wash.;Wyo.;Mexico;Central America (Costa Rica;Guatemala;Honduras);South America;Eurasia;Africa;Pacific Islands;Australia.
|discussion=<p><i>Grimmia longirostris</i> is one of the most common species of the genus. It is most common in the eastern ranges of the Rocky Mountains, ranging from western Texas through the Canadian Rockies, and throughout much of Alaska. It is widely distributed in the Canadian sub-Arctic and Arctic, and is known from Greenland. With the exception of disjunct sites in Oklahoma and North Carolina, it is absent in the American Great Plains and Southeast. These latter areas are largely composed of calcareous rocks, a substrate avoided by <i>G. longirostris</i>. It is rare in coastal areas, becoming more common inland.</p><!--
--><p>As <i>Grimmia</i> affinis, <i>G. longirostris</i> has commonly been placed as a subspecies of <i>G. ovalis</i>. Despite G. Sayre’s (1951) resolution of the differences between these taxa, a large proportion of specimens in major herbaria in North America that are named <i>G. ovalis</i> are actually <i>G. longirostris</i>. However, <i>G. ovalis</i> is dioicous and has leaves with plane margins that are broadly concave distally, usually with a distinct ovate base and well-defined shoulders. In contrast, <i>G. longirostris</i> is autoicous, and has leaves with one recurved margin, that are narrowly keeled distally, with a poorly defined basal region, often without a distinct shoulder. These characters clearly separate these two taxa at the specific level. Hastings puts <i>G. longirostris</i> into a group that also includes <i>G. arizonae</i> and <i>G. pilifera</i>. <i>Grimmia longirostris</i> is separated from those two species by non-sheathing leaf bases, usually long-exserted capsules, and cladautiocous sexuality. <i>Grimmia longirostris</i> is further separated from <i>G. pilifera</i> by having a stem with a distinct central strand and a thin epidermis, a costal transverse section that is typically reniform, and leaves that are recurved on only one margin. Rare specimens of <i>G. longirostris</i> with immersed capsules in the American Southwest may be almost indistinguishable from <i>G. arizonae</i>. In extremely xeric environments, specimens become friable and break into individual strands, making determination of the cladautiocous sexuality impossible. In these circumstances identification will always be uncertain. However, the leaves of <i>G. longirostris</i> are not sheathing; they are only loosely attached to the stem and usually can be peeled off intact. In contrast, the leaves of <i>G. arizonae</i> are sheathing and strongly attached to the stem; they often break at the base when trying to remove them. The costal transverse sections of <i>G. longirostris</i> are characteristically reniform (J. Muñoz 1998) while those of <i>G. arizonae</i> are usually semicircular. However, gradations from semicircular to reniform are not uncommon.</p>
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-->{{#Taxon:
name=Grimmia longirostris
|author=
|authority=Hooker
|rank=species
|parent rank=subgenus
|synonyms=Grimmia affinis;Grimmia arctophila subsp. labradorica;Grimmia catalinensis;Grimmia catalinensis var. mutica;Grimmia elata;Grimmia ortholoma;Grimmia ovalis var. affinis;Grimmia ovata var. affinis;Grimmia ovateoformis
|basionyms=
|family=Grimmiaceae
|habitat=Exposed, dry, acidic granite and quartzite
|elevation=low to high eleavations (100-3100 m)
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;Que.;Sask.;Yukon;Alaska;Ariz.;Calif.;Colo.;Idaho;Maine;Minn.;Mont.;Nev.;N.H.;N.Mex.;N.C.;Okla.;Oreg.;S.Dak.;Tex.;Utah;Vt.;Wash.;Wyo.;Mexico;Central America (Costa Rica;Guatemala;Honduras);South America;Eurasia;Africa;Pacific Islands;Australia.
|reference=None
|publication title=Musci Exot.
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V27/V27_327.xml
|subfamily=Grimmiaceae subfam. Grimmioideae
|genus=Grimmia
|subgenus=Grimmia subg. Guembelia
|species=Grimmia longirostris
}}<!--

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