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Rocky Mountain rush, Tracy's rush

Regel rush, Regel's rush

Habit Herbs, perennial, 2–6 dm.
Rhizomes

long creeping.

Culms

erect, slightly compressed, never rooting at nodes.

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

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
from FNA
AZ; CA; CO; ID; MT; NM; NV; OR; SD; TX; UT; WA; WY; AB; BC; ; Mexico (s to Puebla, Veracruz)
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; ID; MT; NV; OR; UT; WA; WY; AB; BC
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 22. FNA vol. 22.
Parent taxa Juncaceae > Juncus > subg. Ensifolii > Juncus ensifolius Juncaceae > Juncus > subg. Graminifolii
Sibling taxa
J. ensifolius var. ensifolius, J. ensifolius var. montanus
J. acuminatus, J. acutiflorus, J. acutus, J. alpinoarticulatus, J. anthelatus, J. arcticus, J. articulatus, J. biglumis, J. bolanderi, J. brachycarpus, J. brachycephalus, J. brachyphyllus, J. brevicaudatus, J. bryoides, J. bufonius, J. bulbosus, J. caesariensis, J. canadensis, J. capillaris, J. capitatus, J. castaneus, J. chlorocephalus, J. compressus, J. confusus, J. cooperi, J. coriaceus, J. covillei, J. debilis, J. dichotomus, J. diffusissimus, J. drummondii, J. dubius, J. dudleyi, J. effusus, J. elliottii, J. ensifolius, J. falcatus, J. filiformis, J. filipendulus, J. georgianus, J. gerardii, J. greenei, J. gymnocarpus, J. hallii, J. hemiendytus, J. howellii, J. inflexus, J. interior, J. kelloggii, J. leiospermus, J. lesueurii, J. longistylis, J. luciensis, J. macrandrus, J. macrophyllus, J. marginatus, J. maritimus, J. megacephalus, J. mertensianus, J. militaris, J. nevadensis, J. nodatus, J. nodosus, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. pervetus, J. phaeocephalus, J. polycephalus, J. repens, J. roemerianus, J. scirpoides, J. secundus, J. squarrosus, J. stygius, J. subcaudatus, J. subtilis, J. supiniformis, J. tenuis, J. texanus, J. textilis, J. tiehmii, J. torreyi, J. trifidus, J. triformis, J. triglumis, J. trigonocarpus, J. uncialis, J. validus, J. vaseyi, J. xiphioides
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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