OregonFlora species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Juncus planifolius

Juncus torreyi

flat-leaved rush, New Zealand rush

Torrey's rush
Habit Plants perennial, rarely annual, 1–50 cm tall, cespitose, branching, base without tubers. Plants perennial, 30–100 cm tall, rhizomatous, rhizomes elongate, usually swollen or tuberous, at least at some nodes, perennial.
Leaves

flat; grass-like;

auricles absent.

round; hollow, septate, often stiff and divaricate;

auricles 1–3.5 mm.
Inflorescences

1–35 clusters; clusters 3–10-flowered, sometimes bearing leafy bulblets;

inflorescence bracts inconspicuous, membranous; shorter than or equaling inflorescence.

1–23 dense head-like clusters; clusters globose with 26–80 flowers.
Flowers

tepals 6, 1.8– 3.2 mm, dark brown to black; smooth;

stamens 3;

filaments 0.8–1.1 mm;

anthers 0.4–0.6 mm, yellow;

style 0.2–0.3 mm.

tepals 6, brown; greenish or reddish;

tips acuminate;

stamens 6;

filaments 0.6–1.2 mm;

anthers 0.4– 0.8 mm;

styles 0.1–0.2 mm.
Capsules

elliptic to ovoid; shorter than or equaling the tepals, brown to dark brown, 1-chambered.

equaling or longer than the tepals, pale brown to dark brown, gradually tapered to acuminate tips, 1-chambered.
Seeds

0.3–0.45 × 0.2– 0.3 mm, reticulate, apiculate.

ellipsoid to ovoid, 0.4–0.5 × 0.2–0.3 mm, apiculate.
2n

=40.

Juncus planifolius

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

Muddy or sandy shores, sometimes in shallow water, ditches, cranberry farms, peatlands, damp dune hollows. 0–50 m. Est. CA; HI, South America; Australia, Ireland, New Zealand. Exotic.

Juncus planifolius was first collected in Oregon in 1988 and is rapidly spreading. It is native south of the equator.

Shores, swales, springs, ditches. 50–1300m. BW, Col, Lava, Owy. CA, NV, ID, WA; across the US and southern Canada, south to Mexico. Native.

This is primarily an eastern Oregon species, with large globose clusters, peculiar swollen rhizome nodes, and spreading stiff foliage.
Source Flora of Oregon, volume 1, page 283
Peter Zika		 Flora of Oregon, volume 1, page 284
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. ranarius, J. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. triglumis, J. trilocularis, J. uncialis
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. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. triglumis, J. trilocularis, J. uncialis
Web links 
Unless otherwise noted, all data comes from OregonFlora.



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in OregonFlora yet, or it's listed under a synonym.)

Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

The species comparison tool is brought to you by:
Northwest Wildflowers