COSEWIC Assessments

COSEWIC Assessment Summary and Status Report: Coast Manroot Marah oreganus

Assessment Summary – November 2009

Common name
Coast Manroot

Scientific name
Marah oreganus


Reason for designation
A long–lived perennial vine occurring at only three widely separated locations in southeastern Vancouver Island and adjacent Gulf Islands. Fewer than 20 mature plants remain with no evidence of seedling production. Losses of habitat, populations and mature individuals are projected in its Canadian range. Main threats are development of the few known sites, alien species and chance events affecting the handful of remaining individuals.

British Columbia

Status history
Designated Endangered in November 2009.


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Contact Person(s)

COSEWIC Secretariat
c/o Canadian Wildlife Service
Environment Canada
Ottawa, ON
K1A 0H3
Tel: 819-938-4125
Fax: 819-938-3984
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Related Species


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