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short-tailed rush

Habit Plants perennial, 14–55 cm tall, cespitose.
Leaves

basal and cauline; round; hollow, septate, 1–2 mm wide;

auricles 0.5–3 mm.

Inflorescences

2–35 clusters; clusters mostly 2–5-flowered, elliptic to narrowly obconic, lacking bulblets.

Flowers

tepals 6, green, red; pale or medium brown;

tips acuminate;

stamens 3;

filaments 0.6–0.8 mm;

anthers 0.3–0.5 mm;

styles 0.1–0.3 mm.

Capsules

1–1.5 mm longer than the tepals, dark brown, 1-chambered.

Seeds

narrowly ellipsoid to linear, 0.8–1.1 × 0.2–0.3 mm;

body 0.5–0.6 mm; tails 0.2– 0.4 mm, 0.5–1 times as long as seed body.

2n

=80.

Juncus brevicaudatus

Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Wet acidic sandy banks, shores, mossy ditches, cranberry farms. 0–50 m. Est. ID, WA; northeastern US, Great Lakes area, southern Canada; AZ, CO, WY. Exotic.

This species is native to northeastern Washington, northern Idaho, Montana, and eastern North America, but it is introduced in Oregon.

Source Flora of Oregon, volume 1, page 271
Peter Zika
Sibling taxa
J. acuminatus, J. anthelatus, J. articulatus, J. balticus, J. bolanderi, 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. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. triglumis, J. trilocularis, J. uncialis
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