Also called ‘Common Smoothcap’, this is a robust and distinctive species of moss. It has dark green, narrow pointed leaves up to 1cm long on stems which can grow up to 7cm long. The leaf margins have paired teeth, and are distinctly undulate when moist, crisp when dry. Spore capsules are 3-4mm long with a very long pointed beak.
It can form quite extensive patches in shaded woodland, heaths and on banks. Very common and widespread throughout Britain.
Photographs of Catherine’s Moss (Atrichum undulatum) taken February 2014, nature reserve, Staffordshire. © Pete Hillman 2014. Camera used Nikon Coolpix P500.