Juncus brachycarpus

Engelmann

in A. Gray, Manual of Botany of the Northern United States (ed. 5) 542. 1867.

Endemic
Treatment appears in FNA Volume 22.

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

V22 313-distribution-map.jpg

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.
... more about "Juncus brachycarpus"
Ralph E. Brooks* +  and Steven E. Clemants* +
Engelmann +
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. +  and W.Va. +
0–500 m +
Damp clayey, peaty, or sandy soils, swamps, ditches, ponds, wet woods, wet prairies +
Fruiting mid summer–fall. +
in A. Gray, Manual of Botany of the Northern United States (ed. 5) +
Juncus sect. Septati +
Juncus brachycarpus +
Juncus subg. Septati +
species +