Difference between revisions of "Carex laxiculmis"

Schweinitz

Ann. Lyceum Nat. Hist. New York 1: 70. 1824.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 446. Mentioned on page 445.
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|distribution=Ont.;Ala.;Ark.;Conn.;D.C.;Del.;Ga.;Ill.;Ind.;Iowa;Ky.;Maine;Mass.;Md.;Mich.;Mo.;N.C.;N.H.;N.J.;N.Y.;Ohio;Pa.;R.I.;S.C.;Tenn.;Va.;Vt.;W.Va.;Wis.
 
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|distribution=Ont.;Ala.;Ark.;Conn.;D.C.;Del.;Ga.;Ill.;Ind.;Iowa;Ky.;Maine;Mass.;Md.;Mich.;Mo.;N.C.;N.H.;N.J.;N.Y.;Ohio;Pa.;R.I.;S.C.;Tenn.;Va.;Vt.;W.Va.;Wis.
 
|reference=None
 
|reference=None
 
|publication title=Ann. Lyceum Nat. Hist. New York
 
|publication title=Ann. Lyceum Nat. Hist. New York
 
|publication year=1824
 
|publication year=1824
|special status=
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|special status=Illustrated;Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V23/V23_820.xml
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|genus=Carex
 
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|section=Carex sect. Careyanae
 
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Latest revision as of 18:37, 6 November 2020

Plants densely cespitose. Culms erect, ascending, or spreading, 9–48 cm × 0.6–1 mm. Leaves: basal sheaths white or very light brown; nonbasal sheaths 7–32 mm, sheath blades 0.9–11.9 cm × 1–7 mm; leaf blades erect, ascending, or spreading, green or glaucous, 8–36 cm × 3–12 mm; blades of vegetative shoots 0–3.5 times wider than bract blades. Inflorescences: spikes (3–)4(–5) per culm, scattered; peduncles of pistillate spikes exserted 0–9 cm; of staminate spikes exserted 0–9.5 cm; bracts 2–11.8 cm × 1.3–4.8 mm. Pistillate spikes: the proximal basal, scattered, drooping. Staminate spike 1, linear, 8–22 × 1.2–3 mm. Pistillate scales keeled, 2.5–3.2 × 1–1.5 mm, midribs green, margins hyaline or, occasionally, reddish brown outward, apex cuspidate to acute, awn to 1 mm, proximal scale of lateral spike sterile or subtending a staminate flower. Staminate scales obovate, 3.5–4.5 × 1–1.2 mm, midribs green, margins hyaline or reddish brown outward, apex acute. Anthers 2–3 mm. Perigynia 4–9 per spike, finely veined, elliptic-ovoid, 2.5–4 × 1.5–2 mm; beak slightly bent, tapering. Achenes obvoid to broadly ovoid, 2.2–3.2 × 1.2–1.8 mm, slightly concave at maturity, tightly fitting in perigynia. Style slender ascending through entire orifice. 2n = 44, 46.

Distribution

V23 820-distribution-map.jpg

Ont., Ala., Ark., Conn., D.C., Del., Ga., Ill., Ind., Iowa, Ky., Maine, Mass., Md., Mich., Mo., N.C., N.H., N.J., N.Y., Ohio, Pa., R.I., S.C., Tenn., Va., Vt., W.Va., Wis.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Leaves usually glaucous; widest leaf blade 6.4–11.8 mm; longest staminate spike (10–)12–25 mm. Carex laxiculmis var. laxiculmis
1 Leaves usually bright green; widest leaf blade 5.3–8.3 mm; longest staminate spike 6–20(–23) mm. Carex laxiculmis var. copulata
... more about "Carex laxiculmis"
Charles T. Bryson +  and Robert F. C. Naczi +
Schweinitz +
Ont. +, Ala. +, Ark. +, Conn. +, D.C. +, Del. +, Ga. +, Ill. +, Ind. +, Iowa +, Ky. +, Maine +, Mass. +, Md. +, Mich. +, Mo. +, N.C. +, N.H. +, N.J. +, N.Y. +, Ohio +, Pa. +, R.I. +, S.C. +, Tenn. +, Va. +, Vt. +, W.Va. +  and Wis. +
Ann. Lyceum Nat. Hist. New York +
Illustrated +  and Endemic +
Carex laxiculmis +
Carex sect. Careyanae +
species +