Rosulabryum capillare is a species of moss in the Bryaceae family. It has cosmopolitan distribution and is known by the common name capillary threadmoss.
Peristome
…Peristome of Bryum capillare moss Peristome (from the Greek peri, meaning 'around' or 'about', and stoma, 'mouth') is an anatomical feature that surrounds an opening to an organ…