Juncus validus var. validus

Endemic
Treatment appears in FNA Volume 22.

Inflorescences 10–30 cm; heads 20–30-flowered. Capsules exserted, valves separating at dehiscence. 2n = 40.


Phenology: Fruiting late spring–fall.
Habitat: Moist to wet open sites, usually sandy, sometimes peaty, exposed or marshy shores of ponds, lakes, and streams, ditches, and fields
Elevation: 0–100 m

Distribution

V22 588-distribution-map.jpg

Ala., Ark., Fla., Ga., Kans., La., Miss., Mo., N.C., Okla., S.C., Tenn., Tex., Va.

Discussion

Juncus validus var. validus closely resembles J. polycephalus but differs in having complete septa, long-exserted capsules, and terete stems.

Selected References

None.

Lower Taxa

None.
persistent +
acuminate +  and acute +
membranaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Ralph E. Brooks* +  and Steven E. Clemants* +
Coville +
Juncus crassifolius +
9 cm90 mm <br />0.09 m <br /> (70 cm700 mm <br />0.7 m <br />) +
compressed +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
clear yellowbrown +
ascending +  and erect +
terete +, involute +  and flat +
straw-colored +
tapering;subulate +
5 cm50 mm <br />0.05 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Ala. +, Ark. +, Fla. +, Ga. +, Kans. +, La. +, Miss. +, Mo. +, N.C. +, Okla. +, S.C. +, Tenn. +, Tex. +  and Va. +
0–100 m +
arranged +  and cluster +
headlike +
Moist to wet open sites, usually sandy, sometimes peaty, exposed or marshy shores of ponds, lakes, and streams, ditches, and fields +
20-30-flowered +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
spheric +
pseudoaxillary +  and terminal +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
cauline +  and basal +
3 +  and 1 +
green;brown or purplish black +
persistent +
Fruiting late spring–fall. +
parietal +  and axile +
Bulletin of the Torrey Botanical Club +
2 cm20 mm <br />0.02 m <br /> (?) +
not tailed;ellipsoid +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
green;brown or purplish black +
persistent +
generally longer +
Juncus sect. Septati +
Juncus validus var. validus +
Juncus validus +
variety +
green +  and reddish +
lance-subulate +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
not +  and separating +
only proximal;middle +
herb +  and cespitose +