Carex crawfordii Fernald

Crawford's sedge (en), Laîche de crawford (fr), Laîche de Crawford (fr)

Species

Angiosperms > Poales > Cyperaceae > Carex

Characteristics

Plants densely cespitose. Culms 25–60(–85) cm; vegetative culms with few leaves clustered at apex. Leaves: sheaths adaxially white-hyaline, summits U-shaped; distal ligules 1.5–6 mm; blades (2–)3–4(–5) per fertile culm, 7–22 cm × 2–4 mm. Inflorescences erect, usually dense, green, gold, or dark brown, 1.8–3 cm8–14 mm; proximal internode 2–3(–5) mm; 2d internode 1–3 mm; proximal bracts bristlelike, shorter than or equaling inflorescences. Spikes 6–14, distant, distinct, ovoid to broadly ovoid, 8–10 × 4.5–6.5 mm, base and apex acute to truncate. Pistillate scales gold to dark brown, with whitish, green, or brown midstripe, lanceolate, 3–3.8 mm, shorter and narrower than perigynia, apex acuminate to short-awned. Perigynia ascending, white to gold or light brown, 0–5-veined abaxially, 0–4-veined adaxially, narrowly lanceolate to narrowly ovate, flat except over achene or, occasionally, plano-convex, 3.4–4.1(–4.7) × 0.9–1.3 mm, 0.15–0.35 mm thick, margin flat, including wing 0.1–0.2 mm wide, usually crinkled distally; beak brown or red-brown at tip, flat, ± ciliate-serrulate, abaxial suture inconspicuous, distance from beak tip to achene (1.8–)2.1–3 mm. Achenes ± elliptic, 1.1–1.5 × 0.6–0.8 mm, 0.15–0.35 mm thick; style usually persistent, sinuate. 2n = 52, ca. 66, 70.
More
Tufted, 2–7 dm, aphyllopodic; main lvs 1–3 mm wide, shorter than the stems; sheaths ventrally hyaline; spikes 5–12, gynaecandrous, 5–10 mm, subglobose to oblong, pale greenish to dull-stramineous or tan, sessile in a compact spike or narrow head 1.5–3 cm; bracts inconspicuous, or the lowest one to about as long as the infl; pistillate scales shorter and narrower than the perigynia, sometimes mucronulate; perigynia appressed-ascending, planoconvex and not much wider than the achene, 3.3–4 × 0.8–1 mm, 3.5–5 times as long as wide, lightly few-nerved on both sides or nearly nerveless especially ventrally, narrowly wing-margined and serrulate, especially distally, tapering gradually into the slender, distally terete beak; achene lenticular, 1–1.3 × 0.6–0.7 mm; 2n=68, 70. Wet soil, meadows, swamps, and shores; Nf. to B.C., s. to N.J., Mich., Minn., and Wash.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality monoecy
Pollination anemogamy
Spread hydrochory
Mature width (meter) -
Mature height (meter) 0.25 - 0.6
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Flower color
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JanFebMar
AprMayJun
JulAugSep
OctNovDec
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Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light -
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Hardiness (USDA) 4-9

Usage

Uses medicinal
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
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Images

Carex crawfordii unspecified picture

Distribution

Carex crawfordii world distribution map, present in Canada, Colombia, Germany, France, Micronesia (Federated States of), Malaysia, Netherlands, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:46005-2
WFO ID wfo-0000345750
COL ID R8SG
BDTFX ID 13606
INPN ID 88446
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Carex crawfordii Carex crawfordii var. vigens Carex scoparia var. minor Carex crawfordii f. vigens