The bean anthracnose fungus (Collectotrichum lindemuthianum) is an acomycete that is highly variable both genetically and physiologically, with over 100 races characterised worldwide. It devastates bean gardens leading to total crop loss especially when susceptible varieties are grown under cool, moist and humid conditions. This publication contains well articulated literature on the subject, concise research methodology and well presented results from a highly coordinated, scientific research that was conducted in one of the leading Universities in Africa. It gives the first comprehensive and up to date account of the biology, i.e. genetic and physiological diversity, and virulence of C. lindemuthianum in Uganda. All principles presented are also applicable worldwide. This work, therefore, is very useful for early career scientists (including advanced pathology students), researchers (plant breeders, agronomists, pathologists, socio-economists), lecturers, extension service providers, commercial farmers and other stakeholders interested in plant pathology.