Juncus triglumis L.

Three-hulled rush (en), Jonc à trois glumes (fr)

Species

Angiosperms > Poales > Juncaceae > Juncus

Characteristics

Plants usually tufted, 7--20(--30) cm tall. Rhizome short. Stems terete, 0.7--1 mm in diam. Leaves all basal; leaf sheath auricles often purplish red, obtuse; leaf blade linear, 2--6 cm × ca. 0.7 mm. Inflorescences terminal; head solitary; flowers (2 or)3--5 in a horizontal row; bracts 3 or 4, erect-spreading, broadly ovate, 4--6 × 2.8--3.5 mm. Perianth segments yellowish white, lanceolate, 3--4 × 1.3--1.6 mm, unequal with outer ones slightly longer than inner, apex acuminate. Stamens 6; filaments ca. 3 mm; anthers oblong, 0.7--1 mm. Style ca. 0.8 mm; stigmas slightly longer than style. Capsule trigonous ellipsoid, ca. 4 mm, 3-septate, apex obtuse and mucronate. Seeds oblong, ca. 0.9 mm; appendages 2, whitish, subequal. Fl. Jun--Jul, fr. Jul--Aug. 2 n = 50.
More
Herbs, perennial, cespitose, 0.3--3.5 dm. Culms 1--8, 0.3--0.5 mm diam. Cataphylls 1--2. Leaves basal, 2--4; auricles slightly prolonged, rounded, scarious to ± leathery; blade deeply channeled, 2--10 cm, mostly shorter than culms. Inflorescences solitary heads, each with 2--3(--50) flowers; primary bracts brownish, nearly equal to or slightly shorter thanabout equaling inflorescence. Flowers: tepals pale brown or darker, oblong-lanceolate, 3--5 mm, outer and inner series nearly equal; stamens 6, filaments 2.5--4 mm, anthers 0.6--1 mm; styles 0.5--0.8 mm. Capsules tan, pseudo-3-locular, 3-gonous--cylindric, apex obtuse, mucronate. Seeds tan or darker, fusiform, body 0.5--1 mm, tails 0.6--1 mm.
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) 0.05 - 0.2
Root system rhizome
Rooting depth (meter) 0.2
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light 7-8
Soil humidity 7-8
Soil texture 1-2
Soil acidity 5-7
Soil nutriment -
Hardiness (USDA) 4-10

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

Juncus triglumis unspecified picture

Distribution

Juncus triglumis world distribution map, present in China, France, Pakistan, and United States of America

Conservation status

Juncus triglumis threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:443609-1
WFO ID wfo-0000777480
COL ID 6NGY2
BDTFX ID 36755
INPN ID 104363
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Juncus gontscharovii Juncus triglumis Juncus triglumis f. acutiusculus Tristemon simplex Juncus triglumis var. acutiusculus Juncus triglumis var. copelandii Juncus triglumis var. fuscatus Juncus triglumis var. nigricans Juncus triglumis var. triglumis Juncus triglumis var. typicus

Lower taxons

Juncus triglumis subsp. albescens Juncus triglumis subsp. triglumis