Grace M. Waterhouse

• Key to Pythium Pringsheim
• Key to the species entomophthora fres.
• Key to the species of Phytophthora de Bary
• Key to the species of Phytophthora recorded in the British Isles
• The genus Phytophthora
• The genus Phytophthora de Bary
• The genus Pythium Pringsheim
• The genus Sclerospora
• The taxonomy of Pseudoperonospora
• The true nature of Myrioblepharis Thaxter