Juncus repens

Michaux

Flora Boreali-Americana 1: 191. 1803.

Common names: Creeping rush
Treatment appears in FNA Volume 22.

Herbs, perennial, cespitose, floriferous culm 0.5–3 dm. Culms first ascending, soon arcuate-stoloniferous and creeping or floating, or growing submersed along bottom, each node with cluster of basal leaves and fibrous-roots, eventually each emergent terrestrial node with floriferous culm. Leaves basal; auricles 0.5–1 mm, apex acutish, membranous or thicker; blade spreading, flat, 2–10 (–15) cm × 1–3 mm. Inflorescences glomerules, (1–) 2–10, each with 3–12 flowers, open; primary bract usually shorter than inflorescence. Flowers: tepals green, margins scarious; inner series narrowly lanceolate, 5–9 mm, apex usually recurved; outer series obviously shorter, apex usually erect; stamens 3, filaments 1.5–3 mm, anthers 0.5–0.8 mm; style 0.5 mm. Capsules tan, 3-locular, narrowly ellipsoid, 3.5–5.5 × 0.8–1.2 mm. Seeds brown, ovoid, 0.3–0.4 mm, not tailed.


Phenology: Flowering and fruiting summer–fall.
Habitat: Shores of ponds, lakes, and borrow pits, flatwood depressions, ditches, and drainage canals

Distribution

V22 519-distribution-map.jpg

Ala., Ark., Del., Fla., Ga., La., Md., Miss., N.C., Okla., S.C., Tenn., Tex., Va., Mexico (Tabasco), West Indies (Cuba)

Discussion

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Juncus repens"
persistent +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
erect +  and recurved +
acutish +
membranous +
thicker +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Ralph E. Brooks* +  and Steven E. Clemants* +
Michaux +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
channeled;terete;flat +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
ellipsoid +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Creeping rush +
floriferous +  and arcuate-stoloniferous +
flattened +  and round +
Ala. +, Ark. +, Del. +, Fla. +, Ga. +, La. +, Md. +, Miss. +, N.C. +, Okla. +, S.C. +, Tenn. +, Tex. +, Va. +, Mexico (Tabasco) +  and West Indies (Cuba) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
arranged +  and cluster +
headlike +
Shores of ponds, lakes, and borrow pits, flatwood depressions, ditches, and drainage canals +
pseudoaxillary +  and terminal +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
3 +  and 1 +
green;brown or purplish black +
persistent +
Flowering and fruiting summer–fall. +
parietal +  and axile +
Flora Boreali-Americana +
not tailed;ovoid +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
green;brown or purplish black +
persistent +
generally longer +
0.5 cm5 mm <br />0.005 m <br /> (?) +
Juncus sect. Graminifolii +
Juncus repens +
Juncus subg. Graminifolii +
species +
herb +  and cespitose +