Difference between revisions of "Juncus polycephalus"

Michaux

Flora Boreali-Americana 1: 192. 1803 (as polycephalos).

Synonyms: Juncus echinatus Muhlenberg Juncus engelmannii Buchenau
Treatment appears in FNA Volume 22.
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Revision as of 21:00, 16 December 2019

Herbs, perennial, cespitose, 6–10 dm. Culms erect, 3–14 mm diam. Cataphylls absent. Leaves: basal 2–3(–6), cauline 1–4, brownish green; auricles absent; blade 8–70 cm × 4–8 mm. Inflorescences panicles of 16–82 heads, 10–30 cm; primary bract erect; heads 20–30-flowered, spheric, 8–12 mm diam. Flowers: tepals green to reddish, lance-subulate, 3–4 mm, nearly equal, apex acuminate; stamens 3, anthers 1/3–1/2 length of filaments. Capsules exserted, straw-colored, 1-locular, narrowly ovoid, 4–5 mm, apex tapering to beak, remaining after dehiscence. Seeds lance-ellipsoid, 0.5–0.6 mm, not tailed.


Phenology: Fruiting spring–fall.
Habitat: Wet or seasonally wet shores, depressions, occasionally in fairly deep water of streams, usually with a peaty or mucky substrate, occasionally sandy to gravelly
Elevation: 0–100 m

Distribution

V22 513-distribution-map.jpg

Ala., Fla., Ga., La., Md., Miss., N.C., S.C., Tex.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Juncus polycephalus"
Ralph E. Brooks* +  and Steven E. Clemants* +
Michaux +
Juncus sect. Ensifolii +
Ala. +, Fla. +, Ga. +, La. +, Md. +, Miss. +, N.C. +, S.C. +  and Tex. +
0–100 m +
Wet or seasonally wet shores, depressions, occasionally in fairly deep water of streams, usually with a peaty or mucky substrate, occasionally sandy to gravelly +
Fruiting spring–fall. +
Flora Boreali-Americana +
Juncus echinatus +  and Juncus engelmannii +
Juncus polycephalus +
Juncus subg. Ensifolii +
species +