Juncus ensifolius var. montanus(synonym of Juncus saximontanus) |
Juncus regelii |
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Rocky Mountain rush, Tracy's rush |
Regel rush, Regel's rush |
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Habit | Herbs, perennial, 2–6 dm. | |
Rhizomes | long creeping. |
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Culms | erect, slightly compressed, never rooting at nodes. |
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Leaves | 2–25 cdm × 1.5–4 mm. |
basal several, cauline 1–3; auricles absent, or essentially so; blade flat, 0.5–3 dm × 1.5–4 mm. |
Inflorescences | 3–20 heads; heads obovoid to globose. |
glomerules 1–5, each with (8–)10–30 flowers, congested to open, 2–6 cm; primary bract shorter than inflorescence. |
Flowers | outer tepals 2.7–3.6 mm; inner tepals 2.7–3 mm; stamens 6. |
tepals dark brown with green midstripe, lanceolate, 4–6 mm, margins scarious, occasionally papillose; inner series slightly shorter; stamens 6, filaments 1–1.3 mm, anthers 1–1.5 mm; style 0.6 mm. |
Capsules | slightly exserted, ellipsoid, 2.4–4.3 mm. |
tan or darker, 3-locular, obovoid, 3–5 mm, shorter than perianth. |
Seeds | 0.4–1 mm, tailed or more often not tailed. |
ovoid, body 0.6–0.8 mm, tails 0.2–0.4 mm. |
Juncus ensifolius var. montanus |
Juncus regelii |
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Phenology | Fruiting early summer–fall. | Flowering and fruiting summer. |
Habitat | Wet meadows, bogs, springy woods, stream and lake shores | Moist to wet meadows in montane or subalpine areas |
Elevation | 400–3000 m (1300–9800 ft) | 540–3000 m (1800–9800 ft) |
Distribution |
AZ; CA; CO; ID; MT; NM; NV; OR; SD; TX; UT; WA; WY; AB; BC; ; Mexico (s to Puebla, Veracruz)
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CA; ID; MT; NV; OR; UT; WA; WY; AB; BC
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Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | J. xiphioides var. montanus, J. brunnescenns, J. ensifolius var. brunnescens, J. parous, J. saximontanus, J. tracyi, J. utahensis, J. xiphioides var. montanus | J. jonesii |
Name authority | (Engelmann) C. L. Hitchcock: in C. L. Hitchcock et al., Vascular Plants of the Pacific Northwest 1: 195. (1969) | Buchenau: Botanische Jahrbucher fur Systematik, Pflanzengeschichte und Pflanzengeographie 12: 414. (1890) |
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