Juncus caesariensis Coville

New jersey rush (en)

Species

Angiosperms > Poales > Juncaceae > Juncus

Characteristics

Herbs, perennial, cespitose, 3--9 dm. Culms erect, 2--4 mm diam., scabrous. Cataphylls 0 or 1--2, straw-colored, apex acuminate. Leaves: basal 1--2, cauline 1--2; auricles 1--7.5 mm, apex rounded, scarious; blade terete, 4--25 cm x 1--1.8 mm, scabrous. Inflorescences panicles of 5--30 heads, 12--15 cm, erect to ascending branches; primary bract erect; heads 2--6-flowered, broadly obovoid, 5--10 mm diam. Flowers: tepals green to reddish brown, lanceolate; outer tepals 3.3--3.9 mm, apex acuminate; inner tepals 3.9--4.7 mm, acuminate; stamens 6, anthers 1/2 filament length. Capsules exserted, chestnut brown, 3-locular, ovoid, 4.5--5.3 mm, apex acuminate, valves separating at dehiscence. Seeds fusiform, 2.2--2.6 mm, tailed. ; seed body covered with whitish translucent veil.
More
Cespitose, 4–7 dm; lvs scabrous (visibly so at 10×), conspicuously septate, the lower to 3 dm, the upper much shorter; invol lf inconspicuous, to 2 cm; infl divaricately branched, 6–12 cm, two-thirds as wide, the glomerules terminal and lateral, 2–6-fld, 1 cm thick; fls eprophyllate; tep lance-subulate, rigid, striate, the sep 3.7–4.3 mm, the pet 3.9–5.2 mm; fr 4.5–5.7 mm, strongly trigonous, ovoid, tapering to a short beak, subtrilocular, the partitions incomplete distally; seeds slenderly fusiform, caudate at both ends, 2–2.3 mm, the body two-fifths as long. Sphagnum-bogs in the pine-barrens; N.S.; s. N.J. to se. Va. (J. asper, a preoccupied name)
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 0.9
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

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

Conservation status

Juncus caesariensis threat status: Vulnerable

Identifiers

LSID urn:lsid:ipni.org:names:132057-2
WFO ID wfo-0000776115
COL ID 3QTK7
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Juncus caesariensis Juncus asper