SELECTED DANGEROUS FOREST DISEASES IN 

 ASIA, EUROPE, AND NORTH AMERICA 



Summary by Host and Continent 



The following tabulation summarizes dangerous pathogens by host 

 and distribution. Abbreviations used are : Eur., Europe ; N. A., North 

 America ; S.A., South America. 



Host, family, and genus Pathogen Symptoms Continents 



Acanthaceae: Ruellia- Cronartium flaccidum Leaf rust- _ Asia, Eur. 



Aceraceae: 



Acer Helicobasidium mompa Root rot- _ Asia 



Strumella coryneoidea Canker N.A. 



Anacardaceae: Rhus.. Helicobasidium mompa Root rot- _ Asia 



Asclepiadaceae: 



Asclepias Cronartium flaccidum Leafrust-. Asia, Eur. 



Cynanchum do do Do. 



Balsaminaceae: Impa- do do Do. 



tiens. 

 Betulaceae: 



Ostrya Clitocybe tabescens Root rot. _ N.A. 



Strumella coryneoidea Canker Do. 



Bignoniaceae: 



Catalpa Helicobasidium mompa Rootrot Asia 



Chilopsis do do Do. 



Casuarinaceae: 



Casuarina Clitocybe tabescens do N.A. 



Trichosporium vesiculosum _ Wilt Asia 



Cornaceae: 



Cornus Clitocybe tabescens Rootrot N.A. 



Nyssa Strumella coryneoidea Canker Do. 



Cupressaceae : 



Callitris Clitocybe tabescens Rootrot Do. 



Chamaecyparis do do Do. 



Helicobasidium mompa do Asia 



Phomopsis juniperovora Needle N.A. 



blight. 



Poria weirii Root rot Do. 



Cupressus Clitocybe tabescens ...do Do. 



Phomopsis juniperovora Needle Do. 



blight. 



Juniperus Clitocybe tabescens Rootrot Do. 



Phomopsis juniperovora Needle Do. 



blight. 



Phymatotrichum omni- Rootrot Do. 



vorum 



Thuja Clitocybe tabescens do Do. 



Helicobasidium mompa do Asia. 



Keithia thujina Needle Eur., N.A. 



blight. 



Phomopsis juniperovora do N.A. 



Phymatotrichum omnivorum Rootrot-- Do. 



Dipterocarpaceae: 



Shorea Fomes caryophylli do Asia. 



Hypoxylon mediterraneum.- Canker Do. 



Poly porus shorea Heart rot__ Do. 



Ebenaceae: 



Diospyros Cephalosporium diospyri Wilt N.A. 



Phymatotrichum omnivorum. Root rot __ Do. 



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