OregonFlora species comparison

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Juncus nevadensis var. nevadensis

Juncus nevadensis var. inventus

Sierra rush
Photo is of parent taxon

Oregon rush
Leaves

round or slightly flattened; hollow, green or blue-green, septate.

slightly to strongly flattened; hollow, slightly to strongly blue-green, septate.
Inflorescences

(1)6–30 clusters or head-like clusters; clusters 3–15-flowered.

usually 1–3(14) clusters or head-like clusters; clusters 20–45-flowered.
Flowers

filaments 0.3–0.7(0.8) mm; shorter than anthers (0.7)0.8–2(2.6)mm.

filaments 0.7–1.4 mm;

anthers 0.6–1.2 mm, usually equaling the filaments.

Juncus nevadensis var. nevadensis

Juncus nevadensis var. inventus
Distribution
[BONAP county map]
[BONAP county map]
Discussion

Shores, seasonally wet meadows, marshes, swales, ditches. 0–2500m. Throughout Oregon. CA, NV, ID, WA; northeast to Saskatchewan, southeast to CO. Native.

The color, thickness, and flattening of the leaf blades is highly variable.

Coastal dunes, shores, sandy swales, springs, cranberry farms, ditches. 0–50m. Est, Sisk. CA, WA; north to British Columbia. Native.

The peculiar leaves of this taxon are usually flattened but hollow and completely septate, which helps separate it from J. phaeocephalus, a California species with iris-like leaves that are solid and incompletely septate. Juncus phaeocephalus has been reported in error from Oregon several times.
Source Flora of Oregon, volume 1, page 281
Peter Zika		 Flora of Oregon, volume 1, page 281
Peter Zika
Sibling taxa
J. nevadensis var. inventus
J. nevadensis var. nevadensis
Synonyms Juncus dubius, Juncus mertensianus ssp. gracilis Juncus phaeocephalus, Juncus phaeocephalus var. glomeratus, Juncus phaeocephalus var. paniculatus, Juncus phaeocephalus var. phaeocephalus
Web links 
Unless otherwise noted, all data comes from OregonFlora.



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