Show Lower Taxa
Difference between revisions of "Juncus subg. Alpini"
Botanische Jahrbucher fur Systematik, Pflanzengeschichte und Pflanzengeographie 17: 1618. 1886.
Synonyms: Aalpini Engelmann [unranked] Juncus sect. Alpini (Engelmann) Vierhapper
Treatment appears in FNA Volume 22.
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Revision as of 21:21, 27 May 2020
Herbs, perennial, rhizomatous, usually fresh-water habitats. Stems terete. Leaves basal or cauline; blade terete, channeled, imperfectly septate or not. Inflorescences terminal panicles or racemes of several heads or a single terminal head, sympodial or monopodial; bracteoles absent at base of perianth. Flowers in multiflowered heads. Capsules (1–)3-locular. Seeds long tailed, large.
Distribution
n North America, n Europe, n Asia.
Discussion
Species 724 (4 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Plants strongly rhizomatous | Juncus castaneus |
| 1 | Plants cespitose, rhizomes (if present) short, sparingly branched. | > 2 |
| 2 | Leaves basal and cauline | Juncus stygius var. americanus |
| 2 | Leaves all basal. | > 3 |
| 3 | Primary bract of infloresence much longer than inflorescence | Juncus biglumis |
| 3 | Primary bract of inflorescence nearly equal to or shorter than inflorescence | Juncus triglumis |