Des Callaghan’s beautifully detailed image of a Bryum capillare peristome can be found at https://commons.wikimedia.org/wiki/File:Bryum_capillare_peristome.jpg.This page provides a large version of the file, that can be downloaded for free use, plus various details about the image. The real-world diameter of the subject is about 1.1 mm. The image is a composite stack of about 200 original images.
Published: 1 November 2014