Juncus brachycarpus

Herbs, perennial, not cespitose, rhizomatous, (3–)4.5–8(–9) dm. Rhizomes tuberous, 3–4 mm diam. Culms erect, terete, 2–3 mm diam., smooth. Cataphylls 0(–1), straw-colored, apex acute. Leaves: basal 1–2, cauline 2–4, auricles 0.5–3.5 mm, apex rounded, scarious; blade green to straw-colored, terete, 3–50 cm × 1–2 mm diam. Inflorescences terminal panicles of 2–10(–20) heads or a single head, 1–4(–10) cm, branches ascending; primary bract erect; heads 30–100-flowered, spheric, 8–10 mm diam. Flowers: tepals green to straw-colored, often red-tinted, lanceolate-subulate, apex acuminate; outer tepals 2.5–3.8 mm; inner tepals 2–3.2 mm; stamens 3, anthers 1/4–1/2 filament length. Capsules included, chestnut brown, 1-locular, obconic or ovoid, 1.8–2.7 mm, apex obtuse, valves separating at dehiscence, fertile throughout or only proximal to middle. Seeds ellipsoid to oblique-oblong, 0.3–0.4 mm, not tailed; cody clear to yellow-brown. 2n = 44.

Phenology: Fruiting mid summer–fall.
Habitat: Damp clayey, peaty, or sandy soils, swamps, ditches, ponds, wet woods, wet prairies
Elevation: 0–500 m

Distribution

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Ont., Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Kans., Ky., La., Md., Mass., Mich., Minn., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va.

Discussion

Selected References

None.

Lower Taxa

None.