View source for Grimmia reflexidens

{{Treatment/ID
|accepted_name=Grimmia reflexidens
|accepted_authority=Müller Hal.
|publications={{Treatment/Publication
|title=Syn. Musc. Frond.
|place=1: 795. 1849,
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Grimmia grisea
|authority=Cardot
|rank=species
}}
|hierarchy=Grimmiaceae;Grimmiaceae subfam. Grimmioideae;Grimmia;Grimmia subg. Guembelia;Grimmia reflexidens
|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 reflexidens]]</div></div>
|volume=Volume 27
|mention_page=page 227, 237, 239
|treatment_page=page 238
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>in compact hairy cushions, grayish green. <b>Stems</b> 1–2 cm, central strand absent. <b>Leaves</b> ovate to oblong-lanceolate, 0.1–1.15 × 0.3–0.5 mm, keeled, not plicate, margins plane, awns 1–2 mm, very long, smooth to slightly denticulate, flattened basally, long-decurrent, costal transverse section prominent, semi-circular; basal juxtacostal laminal cells rectangular, sometimes nodulose, thin- to thick-walled; basal marginal laminal cells rectangular with thickened transverse walls, pellucid in 2–4 rows; medial laminal cells rounded-quadrate, slightly sinuose, thick-walled; distal laminal cells yellowish green, 1-stratose with 2-stratose ridges, not bulging, marginal cells 2-stratose, not bulging. <b>Sexual</b> condition dioicous, perichaetial leaves enlarged. [Seta straight, 1.5–2 mm. <b>Capsule</b> absent in northern hemisphere material, emergent to shortly exserted, yellowish brown, oblate, exothecial cells irregularly short-rectangular, thin-walled, stomata absent, annulus of 1 row of quadrate, thick-walled cells, operculum mammillate to rostrate, peristome present, nearly fully-developed, split and perforated only in apex, papillose.]</span><!--

-->{{Treatment/Body
|habitat=Dry acidic rock
|elevation=low [to moderate] elevations (50[-300] m)
|distribution=Nfld. and Labr. (Nfld.);South America (Argentina;Chile);Atlantic Islands (Iceland);Pacific Islands (New Zealand);Australia.
|discussion=<p>Of conservation concern.</p><!--
--><p>Previous to its discovery in Iceland, as <i>Grimmia</i> grisea (H. C. Greven 1998), <i>G. reflexidens</i> was known from only the Southern Hemisphere. It had previously been collected east of East Bay, Newfoundland, now the only known locality in North America, but was not recognized as <i>G. reflexidens</i>. The latter is similar to G. asperitricha Dixon & Sainsbury of New Zealand, and the two species have been confused by G. O. K. Sainsbury (1945) as well as by R. Ochyra (1993). J. Muñoz (1998b) synonymized <i>G. reflexidens</i> with <i>G. sessitana</i>. However, the former is readily separated from the latter by: (1) enlarged perichaetial leaves, (2) decurrent awns, (3) non-bulging laminal cells, and (4) dioicous sexual condition. Capsules are unknown from Northern Hemisphere material, but <i>G. reflexidens</i> lacks stomata while they are present for <i>G. sessitana</i>. Although <i>G. reflexidens</i> and <i>G. teretinervis</i> both have decurrent awns they are easily separated by a number of characters: <i>G. reflexidens</i> grows in compact cushions, has long awns, and a semicircular costa; <i>G. teretinervis</i> grows in loose clumps, is hyaline-tipped to short-awned, and has a unique costa that is distally almost completely circular in transverse section.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Grimmia reflexidens
|authority=Müller Hal.
|rank=species
|parent rank=subgenus
|synonyms=Grimmia grisea
|basionyms=
|family=Grimmiaceae
|habitat=Dry acidic rock
|elevation=low [to moderate] elevations (50[-300] m)
|distribution=Nfld. and Labr. (Nfld.);South America (Argentina;Chile);Atlantic Islands (Iceland);Pacific Islands (New Zealand);Australia.
|reference=None
|publication title=Syn. Musc. Frond.
|publication year=
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V27/V27_325.xml
|subfamily=Grimmiaceae subfam. Grimmioideae
|genus=Grimmia
|subgenus=Grimmia subg. Guembelia
|species=Grimmia reflexidens
}}<!--

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