Difference between revisions of "Juncus debilis"

A. Gray

Manual 481506. 1848.

Common names: Weak rush
Synonyms: Juncus acuminatus var. debilis (A. Gray) Engelmann Juncus radicans Schlechtendal
Treatment appears in FNA Volume 22.
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|name=Juncus acuminatus var. debilis
 
|name=Juncus acuminatus var. debilis
 
|authority=(A. Gray) Engelmann
 
|authority=(A. Gray) Engelmann
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|rank=variety
 
}} {{Treatment/ID/Synonym
 
}} {{Treatment/ID/Synonym
 
|name=Juncus radicans
 
|name=Juncus radicans
 
|authority=Schlechtendal
 
|authority=Schlechtendal
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|rank=species
 
}}
 
}}
 
|hierarchy=Juncaceae;Juncus;Juncus subg. Septati;Juncus debilis
 
|hierarchy=Juncaceae;Juncus;Juncus subg. Septati;Juncus debilis
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name=Juncus debilis
 
name=Juncus debilis
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|authority=A. Gray
 
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|publication year=1848
 
|publication year=1848
 
|special status=
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V22/V22_196.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V22/V22_196.xml
 
|genus=Juncus
 
|genus=Juncus
 
|subgenus=Juncus subg. Septati
 
|subgenus=Juncus subg. Septati

Revision as of 20:56, 16 December 2019

Herbs, perennial, cespitose, 1–2.5 dm. Culms erect, terete, 1–2 mm diam., smooth. Cataphylls 0–1, maroon or dark green, apex acute. Leaves: basal 0–1, cauline 1–3; auricles 1–1.5 mm, apex rounded, scarious; blade maroon or dark green, terete, 1–12.5 cm × 0.5–1.5 mm. Inflorescences terminal panicles of 3–50 heads, 2–8 cm, branches ascending to spreading; primary bract erect; heads 2–10-flowered, obpyramidal, 2–5 mm diam. Flowers: tepals green to straw-colored, lanceolate, 1.8–2.3(–2.5) mm, apex sharply acuminate; stamens 3, 1/2 filament length. Capsules exserted, straw-colored, 1-locular, narrowly ellipsoid to lanceoloid, 2.8–3.7 7(–4.2) mm, apex acute, valves separating at dehiscence. Seeds ellipsoid, 0.3–0.4 mm, not tailed; body clear yellow-brown.


Phenology: Fruiting summer.
Habitat: Marshy shores, in small streams, swamps, wet clearings, spring runs, commonly in very soft mucky substrates
Elevation: 0–700 m

Distribution

V22 196-distribution-map.jpg

Ala., Ark., Del., Fla., Ga., Ill., Ky., La., Md., Miss., Mo., N.J., N.Y., N.C., Pa., S.C., Tenn., Tex., Va., Mexicos (Chiapas), Central America (Honduras).

Discussion

Juncus debilis A. Gray is a name being proposed for conservation.

Selected References

None.

Lower Taxa

None.
... more about "Juncus debilis"
Ralph E. Brooks* +  and Steven E. Clemants* +
A. Gray +
Weak rush +
Ala. +, Ark. +, Del. +, Fla. +, Ga. +, Ill. +, Ky. +, La. +, Md. +, Miss. +, Mo. +, N.J. +, N.Y. +, N.C. +, Pa. +, S.C. +, Tenn. +, Tex. +, Va. +, Mexicos (Chiapas) +  and Central America (Honduras). +
0–700 m +
Marshy shores, in small streams, swamps, wet clearings, spring runs, commonly in very soft mucky substrates +
Fruiting summer. +
Juncus acuminatus var. debilis +  and Juncus radicans +
Juncus debilis +
Juncus subg. Septati +
species +