Juncus effusus |
Juncus hemiendytus |
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pasture rush, soft rush |
dwarf rush |
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Habit | Plants perennial, 50–150 cm tall, cespitose; fruiting stems stout, usually 2–4.9 mm diameter above distal sheath; fresh upper stems shiny, smooth, dried stems with (12)18–26(32) weak low ridges, slender and relatively inconspicuous, visible on one side when dried, dried ridges capped with low dull cells (at 10×). | Plants annual, 0.2–3.6 cm tall, unbranched. |
Leaves | lacking blades; distal sheaths dull or shiny; smooth or papillose; apex symmetrical or asymmetrical; thin or thickened, winged or not. |
capillary; basal. |
Inflorescences | dense or open; inflorescence bracts not swollen; erect in fruit. |
1 terminal flower. |
Flowers | tepals 6, usually green to pale brown (dark brown-striped); stamens 3; filaments 0.4–0.7 mm; anthers 0.4–0.7 mm; styles 0–0.4 mm. |
tepals usually 4(6); reddish; erect or outcurved; stamens 2(3); filaments 0.5–1.4 mm; anthers 0.2–0.7 mm; styles 0.1–0.4 mm. |
Capsules | 1.6–2.5 mm; shorter than the tepals; light to dark brown; apices obtuse to acute (notched), 1-chambered. |
usually longer than the tepals; reddish, not strongly contrasting with the tepals. |
Seeds | 0.4–0.5 × 0.2 mm, reticulate, apiculate. |
about 70 per capsule, 0.3–0.55 × 0.2–0.35 mm, apiculate; smooth or faintly reticulate (at 10×), not striate. |
Juncus effusus |
Juncus hemiendytus |
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Distribution | ||
Discussion | The various subspecies include two introductions that often grow mingled with our native plants; the species can dominate wet pastures with heavy grazing. 9 subspecies; 3 subspecies in Oregon. |
2 varieties. |
Source | Flora of Oregon, volume 1, page 276 Peter Zika |
Flora of Oregon, volume 1, page 278 Peter Zika |
Sibling taxa | ||
Subordinate taxa | ||
Web links |
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