Juncus canadensis J. Gay - Canadian Rush


 

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Juncus canadensis - (image 1 of 3)

 

Taxonomy

Family: Juncaceae

Habitat

Swamps, marshes, wet shores.

Associates

 

Distribution

Quebec and Nova Scotia, west to MN, south SC to IN, NE.

Morphology

Stout, erect perennial to 1 m. Leaves erect, terete, septate; lower leaf sheaths coarse or coriacous. Heads few to many, ranging from obpyramidal with 5-10 flowers or spherical with up to 50 flowers; tepals long-tapering to lance-subulate, 3-nerved; petals slightly longer than the sepals; stamens 3 (sometimes 6). At least some seed with a white, caudate tip 0.2 mm or more long at one or both ends.

Notes

Flowers June to September

Wetland indicator: Facultative Wetland

Might be confused with J. acuminatus but the petals of J. canadensis are usually longer than the sepals and more strongly nerved and subulate. Note the white, caudate tip of the seeds in the second image.

 

References

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY

 

Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.


 


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 Michael Hough © 2009