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Juncus greenei Oakes & Tuck.

Greene's rush (en)

Species

Angiosperms > Poales > Juncaceae > Juncus

Characteristics

Herbs, perennial, tufted, to 7 dm. Rhizomes short, densely branched. Culms 1--30. Cataphylls 1--2. Leaves basal, (1--)2--3; auricles (0.2--)0.4--0.6 (--0.8) mm, scarious, rarely ± leathery; ; blade dark green, nearly terete, 5--30 cm x 0.4--0.8 mm, margins entire. Inflorescences terminal, 5--50-flowered, usually congested, 1--8 cm; primary bract usually surpassing inflorescence. Flowers: bracteoles 2; tepals dark green or darker, lanceolate, 2.5--4.2 mm; outer and inner series nearly equal, apex acute; stamens 6, filaments 0.5--0.8 mm, anthers 0.5--0.8 mm; style 0.2 mm. Capsules chestnut brown or dark brown, infrequently lighter, 3-locular, ellipsoid, (2.5--)2.9--3.5(--4) x (1.1--)1.5--1.8 mm, slightly exceeding tepals, apex somewhat truncate. Seeds dark tan, ellipsoid to lunate, 0.48--0.65--(0.7) mm, not tailed. 2n = ca. 80.
More
Stems cespitose from a short rhizome, 2–8 dm; basal lvs filiform, subterete, 5–20 cm; invol lvs similar, 2–15(–20) cm; infl small and compact, obpyramidal, 2–5 cm; fls prophyllate; tep lance-oblong, permanently appressed, acute or aristulate, the sep 2.3–4 mm, the pet 1.9–3.4 mm; fr trilocular, ovoid-cylindric, 3–4+ mm, half as thick, truncate, conspicuously surpassing the tep; seeds oblong to obovoid, 0.3–0.6 mm, merely apiculate; 2n=80. Moist to dry, clay or sandy soil, sometimes on dunes; N.B. to N.J., mostly near the coast; also inland from sw. Ont. to Ind., Io., and Minn.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.55 - 0.7
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 1-2
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 -

Distribution

Juncus greenei world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:279041-2
WFO ID wfo-0000776567
COL ID 3QTRP
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Juncus greenei
WorldFloraDB 2024