The margined streamside moss is a relatively large, dark green to green moss that grows in strands or tufts on wet and often inundated rocks along streams and rivers. Endemic to western North America, it is found in southeastern British Columbia, Idaho, Washington, Oregon, and California. It has been found only once in British Columbia and Canada: along Boundary Creek in the Kootenay Region near the Canada-U.S. border. Detailed population data are not available as this species has not been seen since its first report in 1977.
Little is known about the biological attributes that may influence the recovery potential of this species. It produces spores frequently and may be able to reproduce by vegetative fragmentation. It is a relatively high elevation moss species that appears to be restricted to seasonally inundated rocks or bases of outcrops along streams, but there is little detailed information about the habitat needs for this species across its global range. Potential threats include severe flooding events, disturbance by domestic animals, forest fire, recreation activities (especially hiking), and competition from a related species of moss.
British Columbia Bryophyte Recovery Team. 2007. Recovery Strategy for Margined Streamside Moss (Scouleria marginata Britt) in B.C.. Ministry of Environment. BC Recovery Strategy (Species at Risk)
Topic: Recovery Planning
Keywords: species, recovery, SARA, species at risk, recovery planning, bc, cosewic
Scientific Name: Scouleria marginata
English Name: Margined Streamside Moss
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