Difference between revisions of "Juncus subtilis"
Syn. Luzul. 31. 1823.
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|common_names=Creeping rush;jonc délié | |common_names=Creeping rush;jonc délié | ||
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| + | |code=E | ||
| + | |label=Endemic | ||
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|publication title=Syn. Luzul. | |publication title=Syn. Luzul. | ||
|publication year=1823 | |publication year=1823 | ||
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| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V22/V22_230.xml |
|genus=Juncus | |genus=Juncus | ||
|subgenus=Juncus subg. Septati | |subgenus=Juncus subg. Septati | ||
Latest revision as of 20:30, 5 November 2020
Herbs, perennial, emergent, rhizomatous (forming mats to 5 dm), 0.5–1 dm. Rhizomes 1 mm diam., nodes not swollen. Culms repent, floating or submersed, usually profusely branched, terete, 0.5–1 mm diam. Cataphylls absent. Leaves: basal 1–5, cauline 1–4, small fascicles of short capillary leaves often on rhizomes and stems; auricles 0.1–0.8 mm, apex acute, membranaceous; blade terete, 1.6–3 cm × 0.1–0.3 mm. Inflorescences cymes, flowers 1–3 at 1–2 nodes, 1–4 cm, branches spreading to erect. Flowers: tepals reddish, oblong; outer tepals 1.8–2.8 mm, obtuse; inner tepals 2.2–4.4 mm, obtuse; stamens 6, anthers 3/4 to equal filament length. Capsules exserted, chestnut brown, 1-locular, ovoid to narrowly ovoid, 2.4–5 mm, apex acute proximal to beak, valves separating at dehiscence. Seeds ovoid, 0.3–0.5 mm, not tailed; body clear yellow-brown. 2n = 40.
Phenology: Fruiting late summer–early fall.
Habitat: Muddy, sandy or gravelly shores, fens in decomposed peat, fine muds rich in humus, and submersed in brackish pools
Elevation: 0–200 m
Distribution
Greenland, N.B., Nfld. and Labr., Ont., Que., Maine.
Discussion
Flowers are rarely replaced by bulbils. Most Greenland collections are sterile.
Selected References
None.