Tiny tassel (Crossidium seriatum) is a small (1?1.5 mm high) moss that is dark green to golden brown in colour. Individual leaves are 0.6?1.3 mm long by 0.3?0.6 mm wide with a rounded to slightly notched leaf tip. On the underside of the leaf, the midrib has filaments with rounded projections.
Tiny tassel was designated as Special Concern by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) because of its narrow range and threats of erosion related to recreational use of the habitat and maintenance of road cuts. It is not yet listed in Canada on Schedule 1 of the Species at Risk Act (SARA).1 In British Columbia, tiny tassel is ranked S3 (vulnerable) by the Conservation Data Centre and is on the provincial Blue list. The B.C. Conservation Framework ranks tiny tassel as a priority #1 under goal #1 (contribute to global efforts for species and ecosystem conservation) and goal #3 (maintain the diversity of native species and ecosystems).
The management goal is to maintain all known extant populations and any future populations of tiny tassel that may be found in British Columbia.
The following are the management objectives:
1. To secure long-term protection2 for the known populations and habitats of tiny tassel;
2. To determine the levels of real and potential threats to this species and its habitat and to mitigate their effects; and
3. To confirm the distribution of tiny tassel (including any new populations) and to reliably determine population trends through monitoring.
B.C. Ministry of Environment. 2016. Management Plan for tiny tassel (Crossidium seriatum) in British Columbia. Province of British Columbia. Management Plan (Species at Risk)
Topic: Recovery Planning
Scientific Name: Crossidium seriatum
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