Abstract
A new distribution map is provided for Cryptostroma corticale (Ellis & Everh.) Gregory & Waller. Hosts: Sycamore (Acer pseudoplatanus), maple (A. campestris) and other Acer spp. Information is given on the geographical distribution in Europe, England, southern England to Norfolk and Somerset, France, Paris, Grenoble, German Federal Republic, Italy, North America, Canada, Ontario, USA, Michigan, Wisconsin, Great Lakes Region, WA.