Verrucaria sphaerospora 1.jpg

Creative Commons Licence

Verrucaria sphaerospora, a specimen (Powell 2705) collected from a slate roof, Enmore, Somerset, showing immersed perithecia and pale grey thallus composed of rounded areoles. Red pencil lead (0.5 mm diameter) included for scale.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith