Juncus uncialis |
Juncus filiformis |
|
---|---|---|
inch-high rush, twelfth rush |
thread rush |
|
Habit | Plants annual, 0.3–3.5 cm tall, unbranched, stems not thickened below flowers. | Plants perennial, 10–80 cm tall, rhizomatous, stem ridges obscure. |
Leaves | capillary; basal. |
lacking blades; distal sheaths 3–10 cm, light brown. |
Inflorescences | 1 terminal flower, subtended by solitary bractlet; base encircling stem; tip truncate. |
a more or less loose cluster of 4–15 flowers, usually attached near or below middle of stems (stems here including erect inflorescence bracts above inflorescences); inflorescence bracts not swollen at base. |
Flowers | tepals usually 6 (4 or 8), green or reddish; stamens (2)3; filaments 0.9–1.6 mm; anthers 0.3–0.5 mm; styles 0.1–0.3 mm. |
tepals 6, green or pale brown, 2.5–4 mm; stamens 6; filaments 0.4–0.9 mm; anthers 0.3–0.6 mm; styles 0.1– 0.15 mm. |
Capsules | usually shorter than or equaling the tepals; (green) orange; reddish or dark purple and often darker than tepals. |
2.5–3.5 mm; shorter than or equaling the length of the tepals, green to light brown; apex obtuse to acute, 3-chambered. |
Seeds | approximately 100–140 per capsule, 0.3–0.4 × 0.15–0.25 mm, sometimes faintly reticulate (at 10×), not striate. |
0.4–0.5 × 0.2–0.25 mm. |
2n | =32. |
=70, 80, 84. |
Juncus uncialis |
Juncus filiformis |
|
Distribution | ||
Discussion | Vernal pools, shores exposed by receding water, stony swales. 50–2700m. BR, Col, ECas, Sisk. CA, NV, WA. Native. |
Pond shores, wet meadows, marshes. 800–2300 m. BW, Casc. ID, WA; northern North America; Eurasia. Native. |
Source | Flora of Oregon, volume 1, page 284 Peter Zika |
Flora of Oregon, volume 1, page 278 Peter Zika |
Sibling taxa | ||
Web links |
|
|