Carex swanii Mack.

Swan's sedge (en)

Species

Angiosperms > Poales > Cyperaceae > Carex

Characteristics

Culms 15–75 cm, sparsely pilose. Leaves: ligules longer than wide; blades 1.5–3 mm wide, pilose. Inflorescences: lateral spikes 5–15(–19) × 2–4 mm, proximal distant; terminal spike gynecandrous, at least 1/2 flowers pistillate, (5–)11–20 mm. Pistillate scales ovate, 1.3–2.4 × 0.6–1.4 mm, apex acute to acuminate, with awn to 0.5 mm, as long as perigynia. Staminate scales ovate, 2.4–4.1 mm, apex obtuse to acuminate. Anthers 0.7–1.3(–1.6) mm. Perigynia ascending, obscurely 5–13-veined, obovate-circular, trigonous in cross section, 1.7–2.4 × 1–1.5 mm, densely pilose; beak absent. Achenes 1.4–1.8 × 0.8–1.1 mm. 2n = 54.
More
Much like no. 160 [Carex virescens Willd.]; lvs often overtopping the stems; terminal spike 1–2 cm; pistillate spikes 1–2 cm, ellipsoid or thick-cylindric, densely fld throughout; anthers 0.7–1.5 mm; body of the pistillate scales much shorter than the perigynia, often ending in a cusp equaling the perigynium; perigynia obovoid, obscurely trigonous, 1.8–2.5 mm, blunt. Dry woods and fields; N.S. to Wis., s. to N.C. and Ark. (C. virescens var. minima)
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality -
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Spread -
Mature width (meter) -
Mature height (meter) 0.19 - 0.54
Root system fibrous-root
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Blooming months
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JulAugSep
OctNovDec
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Environment

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Hardiness (USDA) 4-9

Usage

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Edible -
Therapeutic use -
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Animal toxicity -

Cultivation

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Images

Carex swanii unspecified picture

Distribution

Carex swanii world distribution map, present in Åland Islands, Canada, Micronesia (Federated States of), Georgia, Malaysia, Nicaragua, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:47246-2
WFO ID wfo-0000351791
COL ID RC5W
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Carex swanii Carex virescens var. swanii