Juncus triglumis

Herbs, perennial, cespitose, 0.3–3.5 dm. Culms 1–8, 0.3–0.5 mm diam. Cataphylls 1–2. Leaves basal, 2–4; auricles slightly prolonged, rounded, scarious to ± leathery; blade deeply channeled, 2–10 cm, mostly shorter than culms. Inflorescences solitary heads, each with 2–3(–50) flowers; primary bracts brownish, nearly equal to or slightly shorter thanabout equaling inflorescence. Flowers: tepals pale brown or darker, oblong-lanceolate, 3–5 mm, outer and inner series nearly equal; stamens 6, filaments 2.5–4 mm, anthers 0.6–1 mm; styles 0.5–0.8 mm. Capsules tan, pseudo-3-locular, 3-gonous–cylindric, apex obtuse, mucronate. Seeds tan or darker, fusiform, body 0.5–1 mm, tails 0.6–1 mm.

Distribution

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Alta., B.C., Man., N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Colo., Idaho, Mont., N.Mex., Oreg., Utah, Wyo., Eurasia.

Discussion

Varieties 3 (2 in the flora).

Selected References

None.

Lower Taxa

Juncus triglumis var. albescens, Juncus triglumis var. triglumis

Key

1	Most proximal bracts of inflorescence obtuse to mucronate, usually much shorter than inflorescence; capsules well exserted from perianth, 4.5–7 mm, apex conic or rounded proximal to persistent style	Juncus triglumis var. triglumis
1	Most proximal bracts of infloresecence equal to or longer than inflorescence, apex long acuminate or awned; capsules included or barely exserted from perianth, 3–5 mm, apex nearly truncate proximal to persistent style	Juncus triglumis var. albescens