Carex joorii L.H.Bailey

Cypress swamp sedge (en)

Species

Angiosperms > Poales > Cyperaceae > Carex

Characteristics

Vigorously colonial from stout creeping rhizomes, 4–13 dm, stout; main lvs elongate, glaucous, 5–10 mm wide; staminate spike 3–5 cm; pistillate spikes 3–5, separate but overlapping, 2–6 cm, staminate at the tip, usually ± erect, the lower long-peduncled, the upper less so or subsessile; lowest bract lf-like, the upper much reduced and setaceous; pistillate scales oblong, the body shorter than the perigynium, brown-tinged, the midvein prolonged into a rough awn; perigynia dull green and glaucous when young, becoming brown, broadly obovoid, 3.2–5 mm, tapering to the base, conspicuously several-nerved, broadly rounded above into a prominent, short beak with an entire orifice; achene concavely trigonous. Wet woods and swamps, mainly on the coastal plain; se. Va. (and reputedly Md.) to Fla. and Tex., n. in the interior to se. Mo. and McCreary Co., Ky.
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Culms to 125 cm. Leaves: sheaths glaucous, fronts indistinctly veined, veins not persisting, apex thin, truncate or irregularly convex; blades 120 cm × 7–10 mm, glabrous. Inflorescences with 5–7 spikes, 30 cm; peduncle of lateral spikes to 6 cm; proximal bracts equaling inflorescences, 3–6 mm wide; lateral spikes divergent, 3–6 cm × 6–8 mm. Pistillate scales shorter and narrower than perigynia, apex acute, awn to 3 mm. Perigynia strongly divergent, red-brown, angles veined, faces prominently 6–8-veined, sessile, widely elliptic or somewhat obovate, 3.5–4.5 × 2.8–3.2 mm, base rounded, apex ± truncate proximal to beak, densely papillose with low, oblong or, rarely, minute, rounded papillae, not markedly glaucous; beak 0.3–0.5 mm, entire or minutely bidentate, teeth to 0.1 mm. Achenes rhomboid, 2.5–3 × 2.5–3 mm, base conspicuously broadened.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality -
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.4
Root system rhizome
Rooting depth (meter) 0.3
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 2-3
Soil humidity 8-8
Soil texture -
Soil acidity 2-7
Soil nutriment -
Hardiness (USDA) 4-9

Usage

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

Cultivation

Can be grown by cuttings or seedlings.
Mode cuttings seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Carex joorii unspecified picture

Distribution

Carex joorii world distribution map, present in Åland Islands, Georgia, Nicaragua, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:46429-2
WFO ID wfo-0000347863
COL ID R9W8
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Carex joorii