Juncus squarrosus L.

Mosquito rush (en), Jonc raide (fr), Brossière (fr), Jonc squarreux (fr), Jonc rude (fr)

Species

Angiosperms > Poales > Juncaceae > Juncus

Characteristics

Herbs, perennial, cespitose to mat-forming, 2--5 dm. Rhizomes short, nearly erect, branching. Culms 1(--2). Cataphylls 2--4. Leaves basal, 3--6; auricles 0.2--0.4 mm, membranous to scarious; blade arcuate, spreading, grayish green, channeled, 7--30 cm x 1--2 mm, nearly leathery, margins entire. Inflorescences terminal, 7--40-flowered, somewhat loose, 3--10 x 1--2 cm; primary bract usually shorter than inflorescence. Flowers: pedicels 0.5--2 mm; bracteoles 2; tepals brown to blackish, 4--5.5 mm; outer and inner series nearly equal, apex obtuse to nearly acute; stamens 6, filaments 0.5 mm, anthers 1.5--2 mm; style 0.2 mm. Capsules brownish, 3-locular, ovoid to ellipsoid, 4--5 x 2.3--3 mm, nearly equal to perianth. Seeds brownish, ellipsoid, 0.6--0.9 mm, not tailed. 2n = 42.
More
Perennial, very dense coarse tufts (15)-25-35 cm high; roots thick, spreading. Stems stout, stiffly erect. Leaves many, usually all basal, c. ½ length of stems, wiry, very stiff, channelled, abruptly reflexed from just above very wide sheath. Inflorescence 2-8-(12) cm long, strict, with few unequal branches. Flowers in clusters of 2-3-(6) at ends of branches. Tepals 5-6 mm long, ± equal, dark chestnut-brown even in young flowers, tips subulate to acute. Stamens 6, Capsule c. 5 mm long, slightly < tepals, obovate, very shortly mucronate, yellow-brown to dark chestnut-brown.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination anemogamy
Spread epizoochory
Mature width (meter) -
Mature height (meter) 0.2 - 0.5
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light 4-9
Soil humidity 5-7
Soil texture 1-4
Soil acidity 1-5
Soil nutriment -
Hardiness (USDA) 4-9

Usage

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

Cultivation

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

Images

Habit

Juncus squarrosus habit picture by Kees Verhoek (cc-by-sa)
Juncus squarrosus habit picture by Jen Jones (cc-by-sa)

Leaf

Juncus squarrosus leaf picture by phileasfogg_xxi (cc-by-sa)
Juncus squarrosus leaf picture by NaNo_ N9 (cc-by-sa)
Juncus squarrosus leaf picture by evert verboom (cc-by-sa)

Flower

Juncus squarrosus flower picture by Peter V (cc-by-sa)
Juncus squarrosus flower picture by Nathan Nathan (cc-by-sa)
Juncus squarrosus flower picture by Bea Logtenberg (cc-by-sa)

Fruit

Juncus squarrosus fruit picture by Groupe Botanique de Bruxelles (cc-by-sa)

Distribution

Juncus squarrosus world distribution map, present in Andorra, Australia, Austria, Belgium, Belarus, Canada, Switzerland, Czech Republic, Germany, Denmark, Spain, Estonia, France, United Kingdom of Great Britain and Northern Ireland, Greenland, Croatia, Iceland, Italy, Lithuania, Luxembourg, Latvia, Morocco, Netherlands, Norway, New Zealand, Poland, Portugal, Russian Federation, Slovakia, Sweden, Seychelles, Ukraine, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:443512-1
WFO ID wfo-0000777271
COL ID 6NH9D
BDTFX ID 75196
INPN ID 104334
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Juncus ellmanii Juncus strictus Juncus sprengelii Juncus squarrosus subsp. ellmanii Juncus squarrosus var. glomeratus Juncus squarrosus var. longibracteatus Juncus squarrosus