Flooded jellyskin (Leptogium rivulare) COSEWIC assessment and status report: chapter 1

Assessment Summary – May 2004

Common name : Flooded Jellyskin

Scientific name : Leptogium rivulare

Status : Threatened

Reason for designation : This is a globally rare species currently known in Canada from only 4 locations, all in Ontario and Manitoba. The species has very restricted habitat requirements, found primarily at the margins of seasonal (vernal) pools, where it grows on rocks and at the base of living deciduous trees between seasonal high and low water marks. It is vulnerable to changes in normal patterns of annual flooding, as well as to death of host trees. Major threats to the largest populations include urban development and recreational activity.

Occurrence : Manitoba, Ontario

Status history : Designated Threatened in May 2004. Assessment based on a new status report.