Juncus torreyi

Coville

Bulletin of the Torrey Botanical Club 22:303. 1895.

Common names: Torrey's rush
Illustrated
Basionym: Juncus nodosus var. megacephalus Torrey Fl. New York 2: 326. 1843 J.uncus megacephalus (Torrey) A. W. Wood 1862, J.uncus nodosus var. megacephalus Torrey Fl. New York 2: 326. 1843 J.uncus megacephalus (Torrey) A. W. Wood (1862)
Treatment appears in FNA Volume 22.

Herbs, perennial, rhizomatous, (3–) 4–10 dm. Rhizomes 1–3 mm diam., with swollen nodes. Culms erect, terete, 3–5 mm diam., smooth. Cataphylls 0. Leaves: basal 1–3, cauline 2–5, auricles 1–4 mm, apex rounded, scarious; blade strawberry-colored, green, or pink, terete, 13–30 cm × 1–5 mm. Inflorescences terminal clusters of 1–23 heads or single heads, 2–5.5 cm, branches spreading; primary bract erect to ascending; heads 25–100-flowered, globose, 10–15 mm diam. Flowers: tepals green to straw-colored, occasionally reddish, lanceolate-subulate; outer tepals (3.7–) 4–6 mm, apex acuminate; inner tepals (3–) 3.4–4.6 mm, apex acuminate; stamens 6, anthers 1/2 filament length. Capsules equaling perianth or slightly exserted, straw-colored or chestnut-brown, 1-locular, lance-subulate, 4.3–5.7 mm, apex tapering to subulate tip, valves separating at dehiscence, fertile throughout or only proximal to middle. Seeds oblong to ellipsoid, 0.4–0.5 mm, not tailed; body clear yellowbrown. 2n = 40.


Phenology: Fruiting early summer–fall.
Habitat: Wet sandy shores, edges of sloughs, along slightly alkaline watercourses, swamps, sometimes on clay soils, calcareous wet meadows, and alkaline soils
Elevation: 0–600

Distribution

V22 78-distribution-map.jpg

Alta., B.C., Man., N.B., Ont., Que., Sask., Ala., Ariz., Ark., Calif., Colo., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.Dak., Ohio, Okla., Oreg., Pa., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Mexico (Baja California), Mexico (probably elsewhere in n Mexico)

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Juncus torreyi"
persistent +
tapering +  and subulate +
scarious +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Ralph E. Brooks* +  and Steven E. Clemants* +
Coville +
Juncus nodosus var. megacephalus +, J.uncus megacephalus +  and J.uncus nodosus var. megacephalus +
pink +, green +  and strawberry-colored +
13 cm130 mm <br />0.13 m <br /> (30 cm300 mm <br />0.3 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
clear yellowbrown +
ascending +  and erect +
terete +, involute +  and flat +
Torrey's rush +
Alta. +, B.C. +, Man. +, N.B. +, Ont. +, Que. +, Sask. +, Ala. +, Ariz. +, Ark. +, Calif. +, Colo. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +, Mexico (Baja California) +  and Mexico (probably elsewhere in n Mexico) +
0–600 +
arranged +  and cluster +
headlike +
Wet sandy shores, edges of sloughs, along slightly alkaline watercourses, swamps, sometimes on clay soils, calcareous wet meadows, and alkaline soils +
25-100-flowered +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
single;1;23 +
globose +
pseudoaxillary +  and terminal +
2 cm20 mm <br />0.02 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
0.34 cm3.4 mm <br />0.0034 m <br /> (0.46 cm4.6 mm <br />0.0046 m <br />) +
cauline +  and basal +
3 +  and 1 +
swollen +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
chestnut-brown +  and straw-colored +
lance-subulate +
0.43 cm4.3 mm <br />0.0043 m <br /> (0.57 cm5.7 mm <br />0.0057 m <br />) +
green;brown or purplish black +
persistent +
Fruiting early summer–fall. +
parietal +  and axile +
erect +  and ascending +
Bulletin of the Torrey Botanical Club +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not tailed;oblong;ellipsoid +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
green;brown or purplish black +
persistent +
Illustrated +
generally longer +
Juncus sect. Septati +
Juncus torreyi +
Juncus subg. Septati +
species +
reddish +, green +  and straw-colored +
lanceolate-subulate +
only proximal;middle +