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Recovery Strategy for the Incurved Grizzled Moss (Ptychomitrium incurvum) in Canada (Final)

Executive Summary

Incurved grizzled moss is a small, inconspicuous moss that grows in tufts on rocky substrate. Known historically from one location in southern Ontario, where it was reportedly found growing on a rock, the species is now considered to be extirpated from Canada. The first and only observation of the moss was recorded in 1828 by Drummond (COSEWIC 2002).

Reasons for the species' extirpation are not known. The associated threats are not understood and therefore, cannot be addressed by a recovery strategy. The recovery of incurved grizzled moss is deemed to be “not feasible” at this time. However, the feasibility of recovery will be revisited if new populations are discovered in Canada.