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FNA | Family List | FNA Vol. 22 | Juncaceae

1f. Juncus subg. Alpini BUCHENAU(Engelmann) Buchenau, Botanische Jahrbucher fur Systematik, Pflanzengeschichte und Pflanzengeographie. 17: 1618. 1886.

Juncus [unranked] aAlpini Engelmann [unranked]; Juncus sect. Alpini (Engelmann) Vierhapper

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.

Species 724 (4 in the flora); n North America, n Europe, n Asia..


1 Plants strongly rhizomatous   61 Juncus castaneus
+ Plants cespitose, rhizomes (if present) short, sparingly branched.   (2)
       
2 (1) Leaves basal and cauline   60a var. americanus
+ Leaves all basal.   (3)
       
3 (2) Primary bract of infloresence much longer than inflorescence   62 Juncus biglumis
+ Primary bract of inflorescence nearly equal to or shorter than inflorescence   63 Juncus triglumis


 

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