View source for Timmia sibirica

{{Treatment/ID
|accepted_name=Timmia sibirica
|accepted_authority=Lindberg & Arnell
|publications={{Treatment/Publication
|title=Kongl. Svenska Vetensk. Acad. Handl., n. s.
|place=23(10): 24. 1890,
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Timmia norvegica var. crassiretis
|authority=Hesselbo
|rank=variety
}}
|hierarchy=Timmiaceae;Timmia;Timmia sibirica
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Timmiaceae]]</div><div class="higher-taxon"><small>genus</small>[[Timmia]]</div><div class="higher-taxon"><small>species</small>[[Timmia sibirica]]</div></div>
|volume=Volume 27
|mention_page=page 166, 168
|treatment_page=page 169
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>with deciduous longer distal leaves with a less well-developed sheath. <b>Leaf</b> apex acute to slightly acuminate; costa percurrent or subpercurrent; sheath clear in the distal leaves, clear or dark reddish black in the proximal leaves; limb green, non-pellucid; limb-sheath transition gradual; limb margins dentate in distal 1/3–1/2, crenulate or slightly toothed proximally, limb lamina cells (8–)11–18(–22) × (9–)10–19 µm, mammillose and with 2–4 papillae on the adaxial surface, with 2–4 papillae and generally also mammillose on the abaxial surface; cells of the sheath lamina with (0–)1–8(–10) large round, often verrucose papillae over the abaxial surface of the lumens; cells at leaf insertion abruptly differentiated into 1 to a few rows of fragile, hyaline cells; limb costa with the abaxial cells 1- or pluripapillose, and the adaxial cells mammillose and pluripapillose. <b>Sexual</b> condition dioicous; perichaetial leaves longer and more evenly tapering to the apex than stem leaves, with the sheath poorly developed; perigonial leaves shorter than stem leaves, consisting mostly of the sheaths, abruptly apiculate. <b>Calyptra</b> without longitudinal split, not persistent on seta. <b>Capsule</b> non-plicate (only immature ones known); exothecial cells with very sinuose walls; stomata on the neck; endostome cilia with numerous blunt appendiculations on the interior surfaces.</span><!--

-->{{Treatment/Body
|habitat=Only one sporulating specimen is known (from Alaska), but the capsules are immature. Wet or moist, predominantly calcareous sites, often near small streams, on seepage slopes, near snowmelt areas, or in depressions in open tundra, frequently intermixed with other mosses, including other species of Timmia
|elevation=low to moderate elevations (0-1500 m)
|distribution=Greenland;Alta.;B.C.;Nfld. and Labr. (Nfld.);N.W.T.;Nunavut;Que.;Yukon;Alaska;Europe (Norway;Russia).
|discussion=<p><i>Timmia sibirica</i> is a very distinct species: the limb lamina and limb costa cells that are mamillose and pluripapillose on both surfaces are unique within the genus. It is an Arctic species, rare south of 65° N. <i>Timmia sibirica</i> has somewhat larger leaf cells than <i>T. norvegica</i> (and the largest cells of any <i>Timmia</i> taxon), and it has deciduous leaves that can aid in vegetative dispersal.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Timmia sibirica
|authority=Lindberg & Arnell
|rank=species
|parent rank=genus
|synonyms=Timmia norvegica var. crassiretis
|basionyms=
|family=Timmiaceae
|habitat=Only one sporulating specimen is known (from Alaska), but the capsules are immature. Wet or moist, predominantly calcareous sites, often near small streams, on seepage slopes, near snowmelt areas, or in depressions in open tundra, frequently intermixed with other mosses, including other species of Timmia
|elevation=low to moderate elevations (0-1500 m)
|distribution=Greenland;Alta.;B.C.;Nfld. and Labr. (Nfld.);N.W.T.;Nunavut;Que.;Yukon;Alaska;Europe (Norway;Russia).
|reference=None
|publication title=Kongl. Svenska Vetensk. Acad. Handl., n. s.
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V27/V27_216.xml
|genus=Timmia
|species=Timmia sibirica
}}<!--

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