Carex bigelowii subsp. bigelowii

Common names: Carex de Bigelow
Synonyms: Carex anguillata Drejer Carex concolor R. Brown Carex rigida Goodenough Carex rigida var. bigelowii (Torrey ex Schweinitz) Tuckerman Carex rigida var. concolor (R. Brown) Kükenthal Carex washingtoniana
Treatment appears in FNA Volume 23. Treatment on page 400. Mentioned on page 397.
Error creating thumbnail: File missing
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

V23 719-distribution-map.jpg

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.

References

None.

Lower Taxa

No lower taxa listed.

AuthorLisa A. Standley +, Jacques Cayouette + and Leo Bruederle +
AuthorityTorrey ex Schweinitz +
Common nameCarex de Bigelow +
DistributionGreenland +, Man. +, Nfld. and Labr. +, N.B. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Sask. +, Maine +, N.H. +, N.Y. +, Vt. + and Europe. +
Elevation0–2000 m +
HabitatDry to moist alpine or arctic tundra +
Illustration copyrightFlora of North America Association +
IllustratorSusan A. Reznicek +
PhenologyFruiting Aug–Sep. +
Publication titleAnn. Lyceum Nat. Hist. New York +
Publication year1824 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V23/V23 719.xml +
SynonymsCarex anguillata +, Carex concolor +, Carex rigida +, Carex rigida var. bigelowii +, Carex rigida var. concolor + and Carex washingtoniana +
Taxon familyCyperaceae +
Taxon nameCarex bigelowii subsp. bigelowii +
Taxon parentCarex bigelowii +
Taxon ranksubspecies +
VolumeVolume 23 +