Seaside bone (Hypogymnia heterophylla) COSEWIC assessment and status report: chapter 10

In 1996, COSEWIC assessed the national status of Hypogymnia heterophylla as Special Concern (the terminology in use at the time was “Vulnerable”). In British Columbia occurrences of H. heterophylla (S1) are tracked.

The four localities of Hypogymnia heterophylla occur in regional parks, DND property or Fisheries and Oceans property, all of which are protected areas.

NatureServe (2006) ranks the global distribution of Hypogymnia heterophylla as follows:
Global Status G3
Last Updated October 6, 2006
Canada, COSEWIC SC, Special Concern
British Columbia S1
US, National NNR
Californie  SNR
Oregon                      SNR
Washington                           S3

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