Difference between revisions of "Juncus validus"

Coville

Bulletin of the Torrey Botanical Club 22:305. 1895.

Basionym: Juncus crassifolius Buchenau Bot. Jahrb. Syst. 12: 326. 1890,
Treatment appears in FNA Volume 22.
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|name=Juncus crassifolius
 
|name=Juncus crassifolius
 
|authority=Buchenau
 
|authority=Buchenau
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|publication_title=Bot. Jahrb. Syst.
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|publication_place=12: 326. 1890,
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V22/V22_288.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V22/V22_288.xml
 
|genus=Juncus
 
|genus=Juncus
 
|subgenus=Juncus subg. Septati
 
|subgenus=Juncus subg. Septati

Revision as of 19:02, 24 September 2019

Herbs, perennial, rhizomatous, sometimes to nearly cespitose, 4–10 dm. Rhizomes not tuberous, 2 mm diam. Culms erect, terete, 3–5 mm diam., smooth. Cataphylls 0. Leaves: basal 2–3(–6), cauline 1–4; auricles 1–3 mm, apex acute, membranaceous, absent on proximal leaves; blade green, laterally compressed, 9–70 cm × 2–6 mm. Inflorescences terminal panicles of 10–30 heads, 10–30 cm, branches spreading; primary bract erect; heads 20–30-flowered, spheric, (10–)12–15 mm diam. Flowers: tepals green to reddish, lance-subulate, 4–5 mm, apex acuminate; stamens 3, anthers 1/3–1/2 filament length. Capsules exserted, straw-colored, 1-locular, subulate, 4–5,5 mm, tapering to subulate tip, valves separating or not at dehiscence; fertile throughout or only proximal to middle.. Seeds broadly ellipsoid, 0.5–0.6 mm, not tailed; body clear yellow-brown.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Inflorescence 10–30 cm; heads 20–30-flowered; capsule fully separating at apex after dehiscence Juncus validus var. validus
1 Inflorescence 2–5 cm; heads 6–15-flowered; capsule remaining united at apex after dehiscence Juncus validus var. fascinatus