Nugget moss (Microbryum vlassovii) COSEWIC assessment and status report: chapter 1

COSEWIC Assessment Summary

Assessment Summary – November 2006

Common name : Nugget moss

Scientific name : Microbryum vlassovii

Status : Endangered

Reason for designation : In North America, this globally rare moss is known from only three localized sites. Two of these sites are in semi-arid areas of south-central British Columbia. Recent surveys have re-located the species at only one of these. This moss grows on fine soils on the steep portions of silt banks in early stages of plant community development. The extremely small populations render this moss vulnerable to disturbance. Threats include potential road development and maintenance of existing roads, and collection of specimens.

Occurrence : British Columbia

Status history : Designated Endangered in November 2006. Assessment based on a new status report.

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