Difference between revisions of "Hypnum procerrimum"
Flora 49: 458. 1866.
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|name=Pseudostereodon procerrimus | |name=Pseudostereodon procerrimus | ||
|authority=(Molendo) M. Fleischer | |authority=(Molendo) M. Fleischer | ||
+ | |rank=species | ||
}} | }} | ||
|hierarchy=Hypnaceae;Hypnum;Hypnum procerrimum | |hierarchy=Hypnaceae;Hypnum;Hypnum procerrimum | ||
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|elevation=low to moderate elevations (0-1500 m) | |elevation=low to moderate elevations (0-1500 m) | ||
|distribution=Alta.;B.C.;Nfld. and Labr. (Nfld.);N.W.T.;Nunavut;Yukon;Alaska;Mont.;Europe. | |distribution=Alta.;B.C.;Nfld. and Labr. (Nfld.);N.W.T.;Nunavut;Yukon;Alaska;Mont.;Europe. | ||
− | |discussion=<p>Hypnum procerrimum has an interrupted distribution in Arctic and alpine areas of the Northern Hemisphere, usually in well-drained sites. Plants of H. procerrimum have blunt, weakly toothed pseudoparaphyllia and triangular alar regions; the medial laminal cells are linear-flexuose with somewhat pitted walls. The species is very distinctive; some small forms might be confused with Ctenidium molluscum, but the toothed leaves and the laminal cells often with projecting distal ends distinguish the latter.</p> | + | |discussion=<p><i>Hypnum procerrimum</i> has an interrupted distribution in Arctic and alpine areas of the Northern Hemisphere, usually in well-drained sites. Plants of <i>H. procerrimum</i> have blunt, weakly toothed pseudoparaphyllia and triangular alar regions; the medial laminal cells are linear-flexuose with somewhat pitted walls. The species is very distinctive; some small forms might be confused with <i>Ctenidium molluscum</i>, but the toothed leaves and the laminal cells often with projecting distal ends distinguish the latter.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Hypnum procerrimum | name=Hypnum procerrimum | ||
− | |||
|authority=Molendo | |authority=Molendo | ||
|rank=species | |rank=species | ||
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|publication year=1866 | |publication year=1866 | ||
|special status= | |special status= | ||
− | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_848.xml |
|genus=Hypnum | |genus=Hypnum | ||
|species=Hypnum procerrimum | |species=Hypnum procerrimum |
Latest revision as of 22:38, 5 November 2020
Plants large, rusty brown to golden brown or occasionally dark green, dull. Stems 2–8 cm, yellowish to brownish, suberect to procumbent, densely branched, regularly pinnate, branches 0.1–1.5 cm; hyalodermis absent, central strand present; pseudoparaphyllia foliose. Stem leaves falcate-secund, ovate-oblong, gradually narrowing to apex, 1–1.5 × 0.5–0.8 mm; base often auriculate; margins plane, entire to sinuate; acumen tapering; costa double and slender or ecostate; alar cells many, subquadrate to hexagonal, region well defined in auriculate portion, not excavate, 7–8 cells high along margin, 6–8 cells wide; basal laminal cells slender, yellowish or brownish, walls porose; medial cells 60 × 8 µm. Sexual condition dioicous. Sporophytes unknown.
Habitat: Terrestrial, calcareous open terrain, rock, cliff ledges and bases, tundra, open spruce forests, edges of sandy beaches
Elevation: low to moderate elevations (0-1500 m)
Distribution
![V28 848-distribution-map.gif](/w/images/b/b9/V28_848-distribution-map.gif)
Alta., B.C., Nfld. and Labr. (Nfld.), N.W.T., Nunavut, Yukon, Alaska, Mont., Europe.
Discussion
Hypnum procerrimum has an interrupted distribution in Arctic and alpine areas of the Northern Hemisphere, usually in well-drained sites. Plants of H. procerrimum have blunt, weakly toothed pseudoparaphyllia and triangular alar regions; the medial laminal cells are linear-flexuose with somewhat pitted walls. The species is very distinctive; some small forms might be confused with Ctenidium molluscum, but the toothed leaves and the laminal cells often with projecting distal ends distinguish the latter.
Selected References
None.