Difference between revisions of "Arctoa hyperborea"
Bryol. Europ. 1: 157. 1846,.
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|name=Bryum hyperboreum | |name=Bryum hyperboreum | ||
|authority=Gunnerus ex Withering | |authority=Gunnerus ex Withering | ||
+ | |rank=species | ||
|publication_title=Syst. Arr. Brit. Pl. ed. | |publication_title=Syst. Arr. Brit. Pl. ed. | ||
|publication_place=4, 3: 811. 1801 | |publication_place=4, 3: 811. 1801 | ||
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|name=Cynodontium hyperboreum | |name=Cynodontium hyperboreum | ||
|authority=(Gunnerus ex Withering) Hagen | |authority=(Gunnerus ex Withering) Hagen | ||
+ | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Dicranum hyperboreum | |name=Dicranum hyperboreum | ||
|authority=(Gunnerus ex Withering) Smith | |authority=(Gunnerus ex Withering) Smith | ||
+ | |rank=species | ||
}} | }} | ||
|hierarchy=Dicranaceae;Arctoa;Arctoa hyperborea | |hierarchy=Dicranaceae;Arctoa;Arctoa hyperborea | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Arctoa hyperborea | name=Arctoa hyperborea | ||
− | |||
|authority=(Gunnerus ex Withering) Bruch & Schimper | |authority=(Gunnerus ex Withering) Bruch & Schimper | ||
|rank=species | |rank=species | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V27/V27_508.xml |
|genus=Arctoa | |genus=Arctoa | ||
|species=Arctoa hyperborea | |species=Arctoa hyperborea |
Latest revision as of 22:26, 5 November 2020
Plants in compact, dark green tufts. Stems 1–3(–5) cm. Leaves erect-spreading, lanceolate, subulate, 2–3 mm; costa 30–55 µm wide at base, short-excurrent, rough near tip; distal laminal cells mostly subquadrate (1–2:1), incrassate; basal laminal cells elongate, alar cells differentiated, quadrate or slightly enlarged. Seta 4–6(–8) mm. Capsule exserted, slightly curved, obscurely to distinctly ribbed when dry, annulus developed, separating; peristome large, not spreading outward when dry. Spores 18–30 µm.
Phenology: Capsules mature summer.
Habitat: Siliceous rock or soil
Elevation: high-alpine elevations
Distribution
Greenland, Europe.
Discussion
Arctoa hyperborea is a rare arctic-alpine moss found on rock ledges or crevices at high elevations. It is distinguished from other species of the genus by its short-excurrent costa, shorter seta (the length is highly variable), and peristome not spreading when dry.
Selected References
None.