Difference between revisions of "Carex schweinitzii"
Ann. Lyceum Nat. Hist. New York 1: 71. 1824.
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|elevation=100–600 m | |elevation=100–600 m | ||
|distribution=Ont.;Conn.;Mass.;Mich.;Mo.;N.Y.;Pa.;Vt.;Va.;Wis. | |distribution=Ont.;Conn.;Mass.;Mich.;Mo.;N.Y.;Pa.;Vt.;Va.;Wis. | ||
− | |discussion=<p>Carex schweinitzii is very local and uncommon but often forms large colonies where present. It hybridizes occasionally with C. hystericina. The single, old Missouri collection (G. Yatskievych 1999+) seems so far disjunct as to suggest that there may have been a label mixup.</p> | + | |discussion=<p><i>Carex schweinitzii</i> is very local and uncommon but often forms large colonies where present. It hybridizes occasionally with <i>C. hystericina</i>. The single, old Missouri collection (G. Yatskievych 1999+) seems so far disjunct as to suggest that there may have been a label mixup.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1824 | |publication year=1824 | ||
|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_948.xml |
|genus=Carex | |genus=Carex | ||
|section=Carex sect. Vesicariae | |section=Carex sect. Vesicariae |
Revision as of 17:12, 18 September 2019
Plants extensively colonial; rhizomes long. Culms trigonous in cross section, 18–65 cm, smooth distally. Leaves: basal sheaths pale brown; ligules as wide to wider than long; blades pale to mid green, flat to W-shaped, 4–11 mm wide, glabrous. Inflorescences 8–24 cm; proximal bract 11–37 cm, exceeding inflorescence; proximal 2–4 spikes pistillate, erect or often the proximal ascending to spreading; terminal 1(–2) spikes staminate. Pistillate scales lanceolate-acuminate, 2.4–6.9 × 0.3–0.9 mm, shorter than or the proximal longer than perigynia, margins serrulate-ciliate, apex with prominent scabrous awn. Staminate scales acute to acuminate, smooth except at tip. Perigynia ascending, 7–11-veined, narrowly elliptic, 4.2–7 × 1.3–1.8 mm, apex tapered; beak 1.4–2.4 mm, bidentulate, smooth, teeth straight, 0.2–0.5 mm. Stigmas 3. Achenes pale brown, trigonous, smooth.
Phenology: Fruiting Jun–Jul.
Habitat: Shallow cold streams, springheads, seeps, margins of fens, and seepy stream, pond, and lakeshores in open or lightly shaded sites, in highly calcareous soils
Elevation: 100–600 m
Distribution
![V23 948-distribution-map.jpg](/w/images/9/96/V23_948-distribution-map.jpg)
Ont., Conn., Mass., Mich., Mo., N.Y., Pa., Vt., Va., Wis.
Discussion
Carex schweinitzii is very local and uncommon but often forms large colonies where present. It hybridizes occasionally with C. hystericina. The single, old Missouri collection (G. Yatskievych 1999+) seems so far disjunct as to suggest that there may have been a label mixup.
Selected References
None.