OregonFlora species comparison

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Juncus regelii

Regel's rush
Habit Plants perennial, 15–60 cm tall, rhizomatous.
Leaves

flat; grass-like; less than 3 mm wide;

auricles 0–1.6 mm.
Inflorescences

1–5 clusters, usually head-like; clusters usually 10–30-flowered.
Flowers

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

oblong-ovoid; shorter than the tepals, brown, obtuse or truncate, 3-chambered.
Seeds

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 regelii
Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

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
Sibling taxa
J. acuminatus, J. anthelatus, J. articulatus, J. balticus, J. bolanderi, J. brevicaudatus, J. breweri, J. bryoides, J. bufonius, J. bulbosus, J. canadensis, J. capillaris, J. capitatus, J. compressus, J. confusus, J. conglomeratus, J. covillei, J. diffusissimus, J. drummondii, J. dudleyi, J. effusus, J. ensifolius, J. ensifolius x Juncus nevadensis, J. exiguus, J. falcatus, J. filiformis, J. gerardi, J. hemiendytus, J. hesperius, J. howellii, J. inflexus, J. interior, J. kelloggii, J. laccatus, J. lescurii, J. longistylis, J. marginatus, J. mertensianus, J. mexicanus, J. nevadensis, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. planifolius, J. ranarius, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. triglumis, J. trilocularis, J. uncialis
Web links 
Unless otherwise noted, all data comes from OregonFlora.



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