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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|elevation=elevation unknown | |elevation=elevation unknown | ||
|distribution=Nunavut. | |distribution=Nunavut. | ||
| − | |discussion=<p>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.</p> | + | |discussion=<p>It is unclear whether <i>Calliergon orbicularicordatum</i> is an expression of another <i>Calliergon</i> species from unfavorable conditions or if it should be recognized as a distinct species. K. Karczmarz (1971) reported <i>C. orbicularicordatum</i> from Alaska, Greenland, and Svalbard, but the features he used to distinguish this taxon are unclear.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1909 | |publication year=1909 | ||
|special status=Endemic | |special status=Endemic | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V28/V28_614.xml |
|genus=Calliergon | |genus=Calliergon | ||
|species=Calliergon orbicularicordatum | |species=Calliergon orbicularicordatum | ||
Revision as of 17:06, 18 September 2019
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.