Difference between revisions of "Calliergon orbicularicordatum"
in H. G. A. Engler and K. Prantl, Nat. Pflanzenfam. 231[I,3]: 1037. 1909.
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|accepted_name=Calliergon orbicularicordatum | |accepted_name=Calliergon orbicularicordatum | ||
| − | |accepted_authority=(Renauld & Cardot) Brotherus | + | |accepted_authority=(Renauld & Cardot) Brotherus |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in H. G. A. Engler and K. Prantl, Nat. Pflanzenfam. | |title=in H. G. A. Engler and K. Prantl, Nat. Pflanzenfam. | ||
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|name=Hypnum orbicularicordatum | |name=Hypnum orbicularicordatum | ||
|authority=Renauld & Cardot | |authority=Renauld & Cardot | ||
| + | |rank=species | ||
|publication_title=Bull. Herb. Boissier | |publication_title=Bull. Herb. Boissier | ||
|publication_place=4: 19. 1896 | |publication_place=4: 19. 1896 | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Calliergon orbicularicordatum | name=Calliergon orbicularicordatum | ||
| − | + | |authority=(Renauld & Cardot) Brotherus | |
| − | |authority=(Renauld & Cardot) Brotherus | ||
|rank=species | |rank=species | ||
|parent rank=genus | |parent rank=genus | ||
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|publication year=1909 | |publication year=1909 | ||
|special status=Endemic | |special status=Endemic | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V28/V28_614.xml |
|genus=Calliergon | |genus=Calliergon | ||
|species=Calliergon orbicularicordatum | |species=Calliergon orbicularicordatum | ||
Latest revision as of 21:36, 5 November 2020
Plants medium-sized to large, brownish yellow. Stems unbranched or sparsely branched (few shoots seen); axillary hair apical cell elongate-rectangular to short-linear. Stem leaves broadly ovate or broadly ovate-cordate; costa single, 90–109 µm wide near base, ending shortly below apex; alar regions indistinctly delimited, broadly oblong to transversely triangular, from margins 65–80% distance to costa; proximal laminal cells to 2 times as wide as distal cells; medial cells to 18(–20) µm wide proximally, 40–126 × 7–12(–14) µm in distal 1/3–1/2. Sexual condition unknown. Spores unknown.
Habitat: Habitat unknown
Elevation: elevation unknown
Discussion
It is unclear whether Calliergon orbicularicordatum is an expression of another Calliergon species from unfavorable conditions or if it should be recognized as a distinct species. K. Karczmarz (1971) reported C. orbicularicordatum from Alaska, Greenland, and Svalbard, but the features he used to distinguish this taxon are unclear.
Selected References
None.