Difference between revisions of "Juncus acuminatus"

Revision as of 19:02, 24 September 2019

Copyright: Flora of North America Association

Herbs, perennial, cespitose, not rhizomatous, 1.4–10 dm. Culms erect, terete, 1–3 mm diam., smooth. Cataphylls 1–2, gray, apex acute. Leaves: basal 1–2, cauline 1–2; auricles 1–1.5 mm, apex rounded, scarious; blade green, straw-colored, or pink, nearly terete, 1–40 cm. Inflorescences terminal panicles of 5–50 heads, 5–15 cm, branches ascending; primary bract erect; heads (2–)5–20(–50)-flowered, hemispheric (to spheric), 3–10 mm diam. Flowers: tepals light brown to greenish, lanceolate, 2.6–3.5(–3.9) mm, apex acuminate; stamens 3 (or 6), anthers 1/3 filament length. Capsules equaling perianth or slightly exserted, straw-colored, 1-locular, ellipsoid to narrowly ovoid, 2.8–3.5(–4) mm, apex acute, valves separating at dehiscence, fertile throughout or only proximal to middle. Seeds ellipsoid to oblong, 0.3–0.4 mm, not tailed; body clear yellow-brown. 2n = 40.

Phenology: Fruiting early summer–fall.
Habitat: Shores, swamps, ditches, springs, wet meadows, and rock outcrops
Elevation: 0–2200 m

B.C., N.S., Ont., Que., Ala., Ariz., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., N.H., N.J., N.Mex., N.Y., N.C., Ohio., Okla., Oreg., Pa., R.I., S.C., Tenn., Tex., Vt., Va., Wash., W.Va., Wis., Mexico, Central America (Honduras).

Discussion

Selected References

None.

Lower Taxa