Juncus saximontanus |
Juncus regelii |
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Rocky Mountain rush |
Regel's rush |
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Habit | Plants perennial, 20–60 cm tall, rhizomatous. | Plants perennial, 15–60 cm tall, rhizomatous. |
Leaves | flat; iris-like, blue-green, partially septate; auricles 0–1.2 mm. |
flat; grass-like; less than 3 mm wide; auricles 0–1.6 mm. |
Inflorescences | (2)10–20 clusters; clusters 4–25-flowered. |
1–5 clusters, usually head-like; clusters usually 10–30-flowered. |
Flowers | tepals 6, often green (red) to medium brown (dark brown); stamens usually 6; filaments 0.6–1.1 mm; anthers 0.4–0.9 mm; style 0.4–0.9 mm. |
tepals 6, 4–6 × 1.1–1.6 mm, dark brown, papillose; inner usually shorter than or as long as the outer; stamens 6; filaments 0.8–1.3 mm; anthers 1–1.5 mm; style 1.1–2.8 mm. |
Capsules | shorter than to longer than the tepals, brown to dark brown or blackish, obtuse or acute, 1-chambered. |
oblong-ovoid; shorter than the tepals, brown, obtuse or truncate, 3-chambered. |
Seeds | 0.4–0.5 × 0.25–0.3 mm, apiculate, reticulate. |
0.8–1.4(1.7) × 0.15–0.2 mm including tails; seed body 0.3–0.5 mm; seed tails (0.2)0.3–0.6 mm, 1 or both tails longer than the seed body. |
Juncus saximontanus |
Juncus regelii |
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Distribution | ||
Discussion | Shores, creek banks, springs, swales, peatlands, ditches. 100– 2500m. BW, Casc, ECas, Lava, Sisk, WV. CA, ID, NV, WA; north to AK, northeast to Manitoba, southeast to TX, south to Mexico. Native. Juncus saximontanus has six stamens per flower and is usually found east of the Cascade Range. It is weakly separated from J. ensifolius, which has three stamens per flower. Tepal color, inflorescence shape, and style length are unreliable means to separate them. A few plants have three to six stamens and are of uncertain status, perhaps representing hybrids. |
Wet meadows, swales, shores, seeps. 100–2600m. BR, BW, ECas, Lava, Casc. CA, NV, ID, WA; north to British Columbia, northeast to MT, southeast to WY. Native. This species is often confused with Juncus howellii, J. orthophyllus, and J. longistylis; the complex is sorted most reliably using seed characters; see the key. |
Source | Flora of Oregon, volume 1, page 283 Peter Zika |
Flora of Oregon, volume 1, page 283 Peter Zika |
Sibling taxa | ||
Synonyms | Juncus ensifolius var. brunnescens, Juncus ensifolius var. montanus, Juncus saximontanus var. robustior, Juncus saximontanus var. saximontanus, Juncus xiphioides, Juncus xiphioides var. xiphioides | |
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