Juncus dudleyi

Wiegand

Bulletin of the Torrey Botanical Club 27: 524. 1900.

Common names: Dudley's rush
Illustrated
Synonyms: Juncus tenuis var. dudleyi (Wiegand) F. J. Hermann Juncus tenuis var. uniflorus Farwell
Treatment appears in FNA Volume 22.

Herbs, perennial, 2–10 dm. Rhizomes densely branching. Culms 1–20. Cataphylls 1–3. Leaves basal, 2–3; auricles yellowish, 0.2–0.4 mm, leathery; blade flat, 5–30 cm × 0.5–1 mm, margins entire, turned up, occasionally involute. Inflorescences compact and few flowered to loose and lax with to 80 flowers, 1.5–5 (–9) cm; primary bract usually exceeding inflorescence. Flowers: bracteoles 2; tepals greenish, lanceolate, 4–5 mm; inner series nearly equal, spreading in fruit, nearly equal to or exceeding capsule; stamens 6, filaments 0.8–1.2 mm, anthers 0.6–1 mm; style 0.2 mm. Capsules tan, 1-locular to pseudo-3-locular, ellipsoid, 2.9–3.6 × 1.5–1.9 mm. Seeds tan to amber, ellipsoid to lunate, 0.4–0.67 mm, not tailed. 2n = ca. 84.


Phenology: Flowering and fruiting spring–early summer.
Habitat: Exposed or shaded sites in sandy to clayey soils, usually moist areas such as along stream banks, ditches, around springs

Distribution

V22 359-distribution-map.jpg

Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon, Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., 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., R.I., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Mexico

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Juncus dudleyi"
persistent +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
Ralph E. Brooks* +  and Steven E. Clemants* +
Wiegand +
5 cm50 mm <br />0.05 m <br /> (30 cm300 mm <br />0.3 m <br />) +
channeled;terete +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
ascending +  and erect +
terete +, involute +  and flat +
0.29 cm2.9 mm <br />0.0029 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
ellipsoid +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
Dudley's rush +
flattened +  and round +
Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, 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. +, R.I. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +  and Mexico +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
arranged +  and cluster +
headlike +
Exposed or shaded sites in sandy to clayey soils, usually moist areas such as along stream banks, ditches, around springs +
flowered +  and loose +
5 cm50 mm <br />0.05 m <br /> (9 cm90 mm <br />0.09 m <br />) +
pseudoaxillary +  and terminal +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
3 +  and 1 +
green;brown or purplish black +
persistent +
Flowering and fruiting spring–early summer. +
parietal +  and axile +
Bulletin of the Torrey Botanical Club +
not tailed;ellipsoid;lunate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.067 cm0.67 mm <br />6.7e-4 m <br />) +
green;brown or purplish black +
persistent +
Illustrated +
generally longer +
0.2 cm2 mm <br />0.002 m <br /> (?) +
Juncus tenuis var. dudleyi +  and Juncus tenuis var. uniflorus +
Juncus dudleyi +
Juncus subg. Poiophylli +
species +
lanceolate +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +