Difference between revisions of "Juncus megacephalus"
Boston J. Nat. Hist. 1: 132. 1835.
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|place=1: 132. 1835 | |place=1: 132. 1835 | ||
|year=1835 | |year=1835 | ||
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| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
}} | }} | ||
|basionyms= | |basionyms= | ||
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|name=Juncus scirpoides var. carolinianus | |name=Juncus scirpoides var. carolinianus | ||
|authority=Coville | |authority=Coville | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Juncus scirpoides var. echinatus | |name=Juncus scirpoides var. echinatus | ||
|authority=Engelmann | |authority=Engelmann | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Juncaceae;Juncus;Juncus subg. Septati;Juncus megacephalus | |hierarchy=Juncaceae;Juncus;Juncus subg. Septati;Juncus megacephalus | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Juncus megacephalus | name=Juncus megacephalus | ||
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|authority=M. A. Curtis | |authority=M. A. Curtis | ||
|rank=species | |rank=species | ||
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|publication title=Boston J. Nat. Hist. | |publication title=Boston J. Nat. Hist. | ||
|publication year=1835 | |publication year=1835 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V22/V22_120.xml |
|genus=Juncus | |genus=Juncus | ||
|subgenus=Juncus subg. Septati | |subgenus=Juncus subg. Septati | ||
Latest revision as of 20:29, 5 November 2020
Herbs, perennial, rhizomatous, 3–11 dm. Rhizomes 3–4 diam. Culms erect, terete, 3–4 mm diam., smooth. Cataphylls 1–2, purple, apex acute. Leaves: basal 0–1, cauline 2–3; auricles 0.5–2 mm, apex acute, membranaceous; blade terete, 0–24 cm × 0.5–1.7 mm, most distal cauline leaf blade 0–2 cm, shorter than sheath. Inflorescences panicles of (1–)3–21 heads, 1–8 cm, branches erect to spreading; primary bract erect; heads 40–60-flowered, spheric, 8–12 mm diam. Flowers: tepals straw-colored to reddish brown, lanceolate-subulate; outer tepals 2.9–4.1 mm, apex acuminate; inner tepals 2.2–3.7 mm, apex acuminate; stamens 3, anthers 1/4–1/2 filament length. Capsules exserted, , straw-colorerd, 1-locular, subulate, 2.5–4.2 mm, apex tapering to subulate beak, valves not separat ing at dehiscence, fertile throughout or only proximal to middle. Seeds ellipsoid to ovoid, 0.4 mm, not tailed; body clear yellow-brown.
Phenology: Fruiting summer.
Habitat: Fresh marshes, moist hollows of sand dunes, swales, roadside ditches, and dry fertile soil
Elevation: 0–100 m
Distribution
Ala., Fla., Ga., La., Md., Miss., N.C., S.C., Tex., Va.
Discussion
Selected References
None.