OregonFlora species comparison

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Juncus planifolius

flat-leaved rush, New Zealand rush
Habit Plants perennial, rarely annual, 1–50 cm tall, cespitose, branching, base without tubers.
Leaves

flat; grass-like;

auricles absent.
Inflorescences

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

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

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

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

Juncus planifolius
Distribution
[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.
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. ranarius, J. regelii, 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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