Juncus rigidus Desf.

Sea rush (en), Jonc rigide (fr)

Species

Angiosperms > Poales > Juncaceae > Juncus

Characteristics

Perennial, tufted, hard, with coarse, compact horizontal rhizomes and thick roots covered with a velamen of root hairs. Stems up to 1.5 m tall, terete, hard. Leaves terete, pungent, as long as stems, sheaths auriculate; cataphylls present. Inflorescence pseudolateral with subtending bract forming continuation of stem, decompound, interrupted, many-flowered. Flowers usually solitary or 2-few together on branchlets of varying lengths. Tepals linear-acuminate, with membranous margins, 4-5 mm long, usually straw-coloured. Stamens 6; filaments short; anthers c. 1 mm long. Ovary ovoid; style short; stigmas about as long as style, usually exserted sideways. Capsule narrowly cylindrical, tricostate, acute, light brown, exserted from perianth; seeds somewhat fusiform with funicle and apex forming long, white appendages.
More
Tufted, perennial, rhizomatous herb, with coarse, hard, compact horizontal rhizomes and thick roots. Leaves basal, terete, without septa, apex pungent; sheaths 4 or 5 to each leaf, auriculate; cataphylls present. Scape pseudolateral, with subtending bract forming continuation of stem, decompound, interrupted, many-flowered. Flowers solitary or 2-few together on branchlets of varying lengths, paniculate. Perianth segments linear-acuminate to narrowly ovate with membranous margins, 4-5 mm long. Stamens 6; filaments short; anthers ± 1 mm long. Ovary ovoid; style short, stigmas ± as long as style, usually exserted sideways. Capsule narrowly cylindrical, tricostate, acute. Seeds ovoid with long white appendages at each end.
Robust, tufted, perennial halophyte, up to 1.5 m high. Leaves non-septate, basal, rigid, pungent. Flowers: inflorescence paniculate, usually elongated and rather compact; bisexual; inner perianth segments acute, with hyaline margins; perianth yellowish brown. Fruit subterete, triangular, with pointed tip, exserted from perianth. Seeds with white appendages.
Hard, tufted perennial, up to 1.5 m tall. Leaves as long as stems, cylindrical in cross section, pungent. Flowers in a somewhat lateral cluster, subtending bract continuous with stem, usually straw-coloured.
Tufted, perennial herb, up to 1.5 m high. Inflorescence more loosely branched, with flowers 1 to few on shorter and longer side branchlets. Capsule exserted..Seed appendaged. Flowers yellowish brown.
A rush. It forms tufts. It keeps growing from year to year. It has underground stems or rhizomes. It grows 60 cm high.
Inflorescences about 60 cm. high
A tufted perennial herb
Very acute leaf apices
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.15 - 1.5
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a tropical plant. It grows in salt marshes and brackish pools in oasis in the Sahara and on coastal sand dunes.
More
In salt marshes and salt water pools by oases.
Light -
Soil humidity 3-8
Soil texture 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 7-12

Usage

The young shoots are eaten.
Uses animal food environmental use food gene source material medicinal
Edible shoots
Therapeutic use Diarrhea (unspecified), Diuretic (unspecified), Dysuria (unspecified), Dropsy (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Juncus rigidus world distribution map, present in Afghanistan, Angola, Anguilla, United Arab Emirates, Bahrain, Botswana, Cyprus, Algeria, Egypt, Iran (Islamic Republic of), Iraq, Israel, Italy, Kuwait, Libya, Lesotho, Morocco, Mali, Mozambique, Malawi, Niger, Oman, Pakistan, Qatar, Saudi Arabia, Sudan, Senegal, Somalia, eSwatini, Chad, Tajikistan, Turkmenistan, Tunisia, Uzbekistan, South Africa, Zambia, and Zimbabwe

Conservation status

Juncus rigidus threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:443427-1
WFO ID wfo-0000777168
COL ID 6NH6H
BDTFX ID 36667
INPN ID 104312
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Juncus arabicus Juncus nevskii Juncus rigidus Juncus maritimus f. rigidus Juncus maritimus var. arabicus Juncus maritimus var. biancae Juncus maritimus var. rigidus Juncus maritimus subsp. rigidus