1 68 



PLANT DISEASES 



Vaccinium, Andromeda, Ledum, Arctostaphylos, Cassandra, 

 Saxifraga, Symplocus, Bromus, Arrhenatherum. The treat- 

 ment is in all instances the same as that given under E. 

 rhododendri. 



Fig. 36. — Exoiasidium rhododendri. 1, galls 

 formed by the fungus on leaves of Rhododendron 

 ferrugineum, about nat. size; ii, basidia bear- 

 ing a variable number of spores, x 350. 



Exobasidium lauri, Geyl., forms club- or horn-shaped 

 outgrowths up to one foot long, growing from the leaves of 

 Laurus nobilis and L. canariensis in Italy and the Canaries. 



'BLISTER BLIGHT' OF TEA PLANT 



(^Exobasidium vexans, Massee.) 



Dr. Watt, who investigated the pests and blights of the 

 tea plant in Assam under instructions from the Govern- 



