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Juncus dichotomus Elliott

Forked rush (en)

Species

Angiosperms > Poales > Juncaceae > Juncus

Characteristics

Herbs, perennial, to 10 dm. Rhizomes densely branched to short-creeping. Cataphylls 1--3. Leaves basal, (1--)2--3; auricles 0.2--0.5(--0.6) mm, scarious to leathery; blade nearly terete, channeled or flat, 10--25(--40) cm x (0.5--)0.7--1(--1.2) mm, margins entire. Inflorescences terminal, (5--)10--85(--100)-flowered, congested to somewhat loose, (1--)2.5--10--13) cm; primary bract usually exceeding inflorescence. Flowers: bracteoles 2; tepals green, lanceolate, (3--)3.3--4.5(--5.5) mm; outer and inner series nearly equal; stamens 6, filaments 0.6--1.2 mm, anthers 0.4--0.8(--1) mm; style 0.2 mm. Capsules tan to brown, 1-locular to pseudo-3-locular, ellipsoid to widely so, (2.5--)2.8--3.5(--4.5)  1x 1.6--2.2 mm. Seeds brownish to amber, ellipsoid to lunate, 0.3--0.4 mm, not tailed. 2n = ca. 80.
More
Perennial, stiff erect clumps c, 60 cm high. stems rigid, bearing several basal sheaths and leaves. Leaves much < stems ± rigid, narrow, subterete, channelled; lowest sheaths light brown, sheaths of upper leaves reddish-purple with short truncate cartilaginous auricles. Inflorescence 4-10 cm long, with several ± rigid branches, and very slender bract not much > inflorescence. Flowers many, sessile, evenly spaced and often second along branches or more clustered. Tepals 3.5-4.5 mm long, all ± equal, acuminate, spreading from capsule at maturity. Stamens 6. Capsule   long, ± = or slightly < tepals, ovoid, shortly mucronate, shining, light brown.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.9
Root system rhizome
Rooting depth (meter) 0.2
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light 5-6
Soil humidity 5-6
Soil texture 1-2
Soil acidity 2-5
Soil nutriment -
Hardiness (USDA) 8-11

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

Leaf

Juncus dichotomus leaf picture by Trap Hers (cc-by-sa)

Flower

Juncus dichotomus flower picture by Trap Hers (cc-by-sa)
Juncus dichotomus flower picture by Trap Hers (cc-by-sa)

Fruit

Juncus dichotomus fruit picture by Trap Hers (cc-by-sa)

Distribution

Juncus dichotomus world distribution map, present in Argentina, Australia, Bolivia (Plurinational State of), Brazil, Chile, Costa Rica, Guatemala, Honduras, Jamaica, Mexico, New Zealand, Puerto Rico, Paraguay, El Salvador, Uruguay, United States of America, and Venezuela (Bolivarian Republic of)

Identifiers

LSID urn:lsid:ipni.org:names:442886-1
WFO ID wfo-0000776306
COL ID 3QTMT
BDTFX ID 121688
INPN ID 629965
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Juncus dichotomus Juncus albicans Juncus cognatus Juncus platyphyllus Juncus dichotomus var. platyphyllus Juncus tenuis var. dichotomus Juncus tenuis var. unicornis Juncus tenuis subsp. dichotomus Juncus tenuis var. platyphyllus
WorldFloraDB 2024