OregonFlora species comparison

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Juncus drummondii

Drummond's rush, threeflower rush
Habit Plants perennial, 10–40 cm tall, cespitose.
Leaves

lacking blades; the blades reduced to vestigial awns;

distal sheaths 2–6 cm, light brown.
Inflorescences

a loose cluster of 1–3(5) flowers;

inflorescence bracts erect and stem-like, sometimes longer than inflorescence.
Flowers

tepals 6, brown to dark brown;

stamens 6;

filaments 0.5–1.3 mm;

anthers 1–1.6 mm;

styles 0.1–0.25 mm.
Capsules

4.5–8 mm; longer than or equaling the tepals, brown to dark brown;

apices notched, 3-chambered.
Seeds

(0.7)1.2–2.3 × 0.2–0.3 mm;

bodies 0.5–0.6 mm, striate; tails prominent, 0.4–0.9 mm.

Juncus drummondii
Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Montane, subalpine, and alpine meadows, damp slopes, swales, gravel bars, springs, pumice. 700–2800 m. BR, BW, Casc. CA, NV, ID, WA; north to AK, southeast to NM. Native.

This species sometimes grows with the similar J. parryi, which has elongate leaf blades resembling stems, and often favors drier habitats.
Source Flora of Oregon, volume 1, page 275
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. 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. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. triglumis, J. trilocularis, J. uncialis
Synonyms Juncus drummondii var. drummondii, Juncus drummondii var. subtriflorus
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Unless otherwise noted, all data comes from OregonFlora.



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