Difference between revisions of "Carex bigelowii subsp. bigelowii"
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|name=Carex anguillata | |name=Carex anguillata | ||
|authority=Drejer | |authority=Drejer | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Carex concolor | |name=Carex concolor | ||
|authority=R. Brown | |authority=R. Brown | ||
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|name=Carex rigida | |name=Carex rigida | ||
|authority=Goodenough | |authority=Goodenough | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Carex rigida var. bigelowii | |name=Carex rigida var. bigelowii | ||
|authority=(Torrey ex Schweinitz) Tuckerman | |authority=(Torrey ex Schweinitz) Tuckerman | ||
| − | }}{{Treatment/ID/Synonym | + | }} {{Treatment/ID/Synonym |
|name=Carex rigida var. concolor | |name=Carex rigida var. concolor | ||
|authority=(R. Brown) Kükenthal | |authority=(R. Brown) Kükenthal | ||
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|name=Carex washingtoniana | |name=Carex washingtoniana | ||
|authority=unknown | |authority=unknown | ||
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|elevation=0–2000 m | |elevation=0–2000 m | ||
|distribution=Greenland;Man.;Nfld. and Labr.;N.B.;N.W.T.;Nunavut;Ont.;Que.;Sask.;Maine;N.H.;N.Y.;Vt.;Europe. | |distribution=Greenland;Man.;Nfld. and Labr.;N.B.;N.W.T.;Nunavut;Ont.;Que.;Sask.;Maine;N.H.;N.Y.;Vt.;Europe. | ||
| − | |discussion=<p>Carex bigelowii subsp. bigelowii is highly variable in height and shape, stipe length, and color of perigynia. The isolated populations at the southeastern extreme of the range (New York and New England) tend to have larger, more apically acute perigynia than in the northern parts of the range. Although usually distinct from the western subsp. lugens, occasional eastern plants are not distinguishable based on morphology.</p><!-- | + | |discussion=<p><i>Carex bigelowii </i>subsp.<i> bigelowii</i> is highly variable in height and shape, stipe length, and color of perigynia. The isolated populations at the southeastern extreme of the range (New York and New England) tend to have larger, more apically acute perigynia than in the northern parts of the range. Although usually distinct from the western <i></i>subsp.<i> lugens</i>, occasional eastern plants are not distinguishable based on morphology.</p><!-- |
| − | --><p>The ecology of Carex bigelowii subsp. bigelowii has been extensively studied (K. A. Kershaw 1962; T. V. Callaghan 1976; R. W. Fonda and L. C. Bliss 1966). Chromosome numbers reported for subsp. bigelowii are lower than the number reported for subsp. lugens, and indicate that there may be considerable genetic differentiation between these taxa as suggested by Hultén’s hypothesis that these are the two ends of a circumpolar Rassenkreise.</p> | + | --><p>The ecology of <i>Carex bigelowii </i>subsp.<i> bigelowii</i> has been extensively studied (K. A. Kershaw 1962; T. V. Callaghan 1976; R. W. Fonda and L. C. Bliss 1966). Chromosome numbers reported for <i></i>subsp.<i> bigelowii</i> are lower than the number reported for <i></i>subsp.<i> lugens</i>, and indicate that there may be considerable genetic differentiation between these taxa as suggested by Hultén’s hypothesis that these are the two ends of a circumpolar Rassenkreise.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
| − | |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/V23/V23_719.xml |
|genus=Carex | |genus=Carex | ||
|section=Carex sect. Phacocystis | |section=Carex sect. Phacocystis | ||
Revision as of 17:10, 18 September 2019
Plants not cespitose. Proximal pistillate spike loosely flowered, base often attenuate, less often cuneate. Perigynia green, spotted purple-black on apical 1/2, not uniformly black, 1.8–3.5 × 1.1–2 mm; stipe 0.15–0.45 mm, apex acute, sometimes rounded, minutely papillose. 2n = 68–71.
Phenology: Fruiting Aug–Sep.
Habitat: Dry to moist alpine or arctic tundra
Elevation: 0–2000 m
Distribution
Greenland, Man., Nfld. and Labr., N.B., N.W.T., Nunavut, Ont., Que., Sask., Maine, N.H., N.Y., Vt., Europe.
Discussion
Carex bigelowii subsp. bigelowii is highly variable in height and shape, stipe length, and color of perigynia. The isolated populations at the southeastern extreme of the range (New York and New England) tend to have larger, more apically acute perigynia than in the northern parts of the range. Although usually distinct from the western subsp. lugens, occasional eastern plants are not distinguishable based on morphology.
The ecology of Carex bigelowii subsp. bigelowii has been extensively studied (K. A. Kershaw 1962; T. V. Callaghan 1976; R. W. Fonda and L. C. Bliss 1966). Chromosome numbers reported for subsp. bigelowii are lower than the number reported for subsp. lugens, and indicate that there may be considerable genetic differentiation between these taxa as suggested by Hultén’s hypothesis that these are the two ends of a circumpolar Rassenkreise.
Selected References
None.