Miscellaneous. 44^ 



CARNATION RUST. 



Urouiyccs caryophyllinus (Schrk.) Schroet. 



This is a very destructive rust, attacking the stems and leaves of the 

 carnation plant. On them it forms large, elongated pustules, which con- 

 tain the summer and winter spores. The spring spores have never been 

 found. The summer spores are reddish brown and are the first to ap- 

 pear. Later in the season come the winter spores, which are much 

 darker in color. It is these that carr}^ the disease through adverse con- 

 ditions. 



The mycelium spreads throughout the plant. Hence cuttings from 

 infected plants are mfected the same as the parent plant. 



Certain varieties of carnations are more susceptible to this rust than 

 others. Florists may take advantage of this fact in eradicating this pest 

 from their houses. 



Bordeaux in a fme spray at intervals of two to three weeks is an 

 effective check. Proper attention to the ventilation, cultivation and 

 watering of the plants helps materially in keeping the disease out. Dis- 

 eased plant parts should be destroyed to prevent spreading. 



CHRYSANTHEMUM RUST. 



Puccinia chrysanthemi Rose. 



This- rust has only the summer or uredospore stage. The spores 

 are reddish brown in color. The pustules in which they are borne are 

 very smah, being not much larger than a pin head. They occur mostly 

 upon the under surface of the leaves, but they may also be found on the 

 upper surfaces. Since only the summer spores are present, the disease 

 is more easily combatted. The diseased parts should be cut away and 

 destroyed at once. At the end of the season all the infected plants 

 should be destroyed. Inside cultivation in summer and selection of rust 

 free stock, are methods which check the disease. 



BEAN ANTHRACNOSE. 



CoUetotrichum Undemuthianum (Sacc. et mag.) Bri ct Cat'. 

 This is a very prevalent fungus disease which attacks all varieties 

 of beans, and all parts of the bean plant. The veins and tissue of the 

 leaf when attacked turn black ; the tissue cracks open and the parts die. 

 The stems and petioles also turn black, and their tissue is so destroyed 

 that they often break over of their own weight. 



