Difference between revisions of "Juncus pervetus"
Rhodora 19: 17. 1917.
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|elevation=0 m | |elevation=0 m | ||
|distribution=Mass. | |distribution=Mass. | ||
| − | |discussion=<p>All sheets that I have seen have aborted seeds. Juncus pervetus was thought to be Juncus subnodulosus, a European native (H. Weimarck 1946). It has been shown that this is a distinct species, however (S. Snogerup and B. Snogerup 1996). It would appear that this species is now extinct.</p> | + | |discussion=<p>All sheets that I have seen have aborted seeds. <i>Juncus pervetus</i> was thought to be <i>Juncus</i> subnodulosus, a European native (H. Weimarck 1946). It has been shown that this is a distinct species, however (S. Snogerup and B. Snogerup 1996). It would appear that this species is now extinct.</p> |
|tables= | |tables= | ||
|references={{Treatment/Reference | |references={{Treatment/Reference | ||
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|publication year=1917 | |publication year=1917 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V22/V22_294.xml |
|genus=Juncus | |genus=Juncus | ||
|subgenus=Juncus subg. Septati | |subgenus=Juncus subg. Septati | ||
Revision as of 15:57, 18 September 2019
Herbs, perennial, rhizomatous, 7–10 dm. Rhizomes 3–7 mm diam., nodes not swollen. Culms erect, terete, 2–4 mm diam. Cataphylls 2–3, straw-colored, apex rounded. Leaves: basal 0, cauline 1; auricles 0.5–1.5 mm, apex blunt, cartilaginous; blade 25–35 cm × 1–2 mm. Inflorescences terminal panicles of 24–60 heads, 5–10 cm, branches spreading; primary bract erect; heads 15–50-flowered, spheric, 4.5–6 mm diam. Flowers: tepals light brown, lanceolate to oblong, 2–2.5 mm, nearly equal; stamens 6, anthers longer than filament. Capsules included with beak slightly exserted, chestnut brown, 3-locular, ovoid, 2.5 mm, apex acute proximal to beak, valves separating at dehiscence, fertile throughout or only proximal to middle. Seeds not seen.
Phenology: Fruiting fall.
Habitat: Upper border of salt marsh
Elevation: 0 m
Discussion
All sheets that I have seen have aborted seeds. Juncus pervetus was thought to be Juncus subnodulosus, a European native (H. Weimarck 1946). It has been shown that this is a distinct species, however (S. Snogerup and B. Snogerup 1996). It would appear that this species is now extinct.