Verrucaria

Verrucaria is a genus of fungi in the family Verrucariaceae. This genus is synonymous with Trimmatothele Norman ex Zahlbr. ==Gallery== Image:Verrucaria_nigrescens_(EU1).jpg|Verrucaria nigrescens (perithecium) ...
Found on http://en.wikipedia.org/wiki/Verrucaria

Verrucaria

genus of lichens of the family Verrucariaceae, often found as a black crust covering seashore rocks. Along with the effects of weathering, ...
Found on http://www.britannica.com/eb/a-z/v/17
No exact match found