Difference between revisions of "Carex arcta"
Ill. Carex, 155, plate 497. 1867.
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|name=Carex canescens var. oregana | |name=Carex canescens var. oregana | ||
|authority=L. H. Bailey | |authority=L. H. Bailey | ||
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|name=Carex canescens var. polystachya | |name=Carex canescens var. polystachya | ||
|authority=Boott | |authority=Boott | ||
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|name=Carex heleonastes var. scabriuscula | |name=Carex heleonastes var. scabriuscula | ||
|authority=Kükenthal | |authority=Kükenthal | ||
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|name=Carex kunzei | |name=Carex kunzei | ||
|authority=unknown | |authority=unknown | ||
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|publication year=1867 | |publication year=1867 | ||
|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_567.xml |
|genus=Carex | |genus=Carex | ||
|section=Carex sect. Glareosae | |section=Carex sect. Glareosae |
Revision as of 17:09, 18 September 2019
Plants densely cespitose; rhizomes short. Culms erect, slender, 15–80 cm, very rough distally. Leaves: sheaths pale to gray-brown abaxially, inner band thin, hyaline, conspicuously purplish dotted, concave at summit; ligules acute, longer than wide; blades pale to gray-green, flat, 15–50 cm × 2–4 mm, shorter than to exceeding culms. Inflorescences erect, ovoid-oblong, 1.5–4 cm × 7–12 mm; proximal bracts (sometimes also 2d) bristlelike-prolonged, from short to clearly exceeding spikes, distal bracts usually scalelike. Spikes 5–15, gynecandrous, proximal often slightly separate, distal closely approximate (sometimes hardly recognizable), containing 10–20 perigynia, sessile, oblong, 5–10 × 4–6 mm. Pistillate scales hyaline with green center, often brown tinged, ovate, shorter than perigynia, apex obtuse to short-cuspidate. Perigynia spreading-ascending, greenish, often brown in age, several-veined, ovate, widest near base, 2–3(–3.5) × 1.25–1.5 mm, minutely papillose (membranous); beak abaxial suture conspicuous, 0.75–1.25 mm, margin serrulate. Achenes pale brown, ovate, 1.25–1.5 1 mm, dull to slightly glossy. 2n = 60.
Phenology: Fruiting Jun–Sep.
Habitat: Swampy (coniferous) woods and thickets, wet meadows
Elevation: 0–2000 m
Distribution
Alta., B.C., Man., N.B., Ont., Que., Yukon, Calif., Idaho, Maine, Mass., Mich., Minn., Mont., N.H., N.Y., Oreg., Vt., Wash., Wis.
Discussion
Selected References
None.