View source for Grimmia leibergii

{{Treatment/ID
|accepted_name=Grimmia leibergii
|accepted_authority=Paris
|publications={{Treatment/Publication
|title=Actes Soc. Linn. Bordeaux, sér.
|place=5, 9: 528. 1895,
}}
|basionyms={{Treatment/ID/Basionym
|name=Grimmia jacutica
|authority=E. Ignatova
|rank=species
|publication_title=H. Bednarek-Ochyra, O. Afonina &amp; J. Muñoz
|publication_place=
}}
|synonyms={{Treatment/ID/Synonym
|name=Grimmia pachyphylla
|authority=Leiberg
|rank=species
}}
|hierarchy=Grimmiaceae;Grimmiaceae subfam. Grimmioideae;Grimmia;Grimmia subg. Rhabdogrimmia;Grimmia leibergii
|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. Rhabdogrimmia]]</div><div class="higher-taxon"><small>species</small>[[Grimmia leibergii]]</div></div>
|volume=Volume 27
|mention_page=page 206, 228, 249, 251, 272
|treatment_page=page 252
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>robust, ascending from a decumbent base, dark olivaceous. <b>Stems</b> 5–12 cm, repeatedly dichotomous, central strand absent. <b>Leaves</b> loosely appressed when dry, patent to spreading when moist, often becoming secund distally on the stem, lanceolate to ovate-lanceolate, 3–4 × 0.6–0.9 mm, keeled, margins recurved on both sides, awns denticulate, flattened proximally, sometimes decurrent, costa yellowish to pale orange proximally, wider (± 100 µm) near the base, channeled distally, semicircular on abaxial side; basal juxtacostal laminal cells elongate to linear, weakly orange at insertion, nodulose, thick-walled; basal marginal laminal cells in a few rows quadrate to short-rectangular, thick-walled; medial laminal cells quadrate to short-rectangular, strongly sinuose, thin to thick oblique transverse walls and extremely thick lateral walls; distal laminal cells 1-stratose, margins partly 2-stratose. <b>Gemmae</b> absent. <b>Sexual</b> condition dioicous. <b>Seta</b> arcuate, 3–4 mm. <b>Capsule</b> occasionally present, exserted, yellowish green, oblong-ovoid, striate, exothecial cells rather thick-walled, annulus present, operculum rostrate, peristome teeth orange to reddish, perforated, irregularly cleft at apex, nearly smooth basally, papillose distally. <b>Calyptra</b> mitrate.</span><!--

-->{{Treatment/Body
|habitat=Dry acidic boulders
|elevation=moderate elevations (400-500 m)
|distribution=B.C.;Calif.;Idaho;Mont.;Oreg.;Wash.;Eurasia.
|discussion=<p><i>Grimmia leibergii</i>, formerly thought to be endemic to western North America, has the habit of <i>Racomitrium</i> heterostichum. Nearly all specimens of <i>G. leibergii</i> in NY, and probably also in other North American herbaria, have been filed as varieties of R. heterostichum (= <i>Bucklandiella heterosticha</i>). This confusion probably accounts for <i>G. leibergii</i> not being commonly recognized in North America. J. B. Leiberg (1893) stated that it is most closely related to G. decipiens, a species that does not occur in North America. Both taxa share broadly ovate-lanceolate leaves with both margins recurved, rectangular mid leaf cells with extremely thick and sinuose lateral walls and elongate to linear, nodulose, thick-walled basal juxtacostal cells. However, G. decipiens is autoicous, it is a much smaller species, with long, sharply denticulate awns. The gametophytes form comal tufts, so the distal leaves are 2–3 times longer than the lower leaves, and are not secund. <i>Grimmia</i> jacutica has been described separately from eastern Asia and Alaska but all specimens of it that we have examined are just slightly smaller forms of <i>G. leibergii</i> with slightly more sinouse mid leaf cells. The extension of <i>G. leibergii</i> into eastern Asia is a significant find and speaks to our poor knowledge of <i>Grimmia</i> distribution patterns on a worldwide basis.</p>
|tables=
|references=
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-->{{#Taxon:
name=Grimmia leibergii
|authority=Paris
|rank=species
|parent rank=subgenus
|synonyms=Grimmia pachyphylla
|basionyms=Grimmia jacutica
|family=Grimmiaceae
|habitat=Dry acidic boulders
|elevation=moderate elevations (400-500 m)
|distribution=B.C.;Calif.;Idaho;Mont.;Oreg.;Wash.;Eurasia.
|reference=None
|publication title=Actes Soc. Linn. Bordeaux, sér.
|publication year=
|special status=
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V27/V27_348.xml
|subfamily=Grimmiaceae subfam. Grimmioideae
|genus=Grimmia
|subgenus=Grimmia subg. Rhabdogrimmia
|species=Grimmia leibergii
}}<!--

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