Symptoms 



orange spores. Gooseberry rust — Puccinia 

 Pringsheimiana, having as its alternate host 

 sedges which should be kept down in neighbour- 

 hood of gooseberries. 



Gbapb. See Vine. 



Hawthorn. See Crataegus. 



HeUiEBORTTS. 



Foliage. — Dark blotches somewhat rounded 

 in form, marked with indistinct rings. Leaf- 

 blotch due to Coniothyrium concentricum. Pick 

 off diseased leaves and spray remainder with 

 liver of sulphur (7). 

 Hollyhock. 



Foliage. — Slightly discoloured spots on upper 

 surface, small, at first red-brown, later darker, 

 raised spots below. Rust due to Puccinia 

 malvacearum. No alternate host. Raise fresh 

 stock every year. Destroy seedlings found at- 

 tacked (the disease is apt to be conveyed in the 

 seed), and spray with potassium permanganate. 

 Hyacinth. 



Foliage and Bulb. — Veins of leaves and bulb 

 yeUow, due to presence of a yellow bacterium. 

 Bacterium Hyacinthi. Burn affected bulbs. 

 Iris. 



Rhizome. — ^The rhizome and lower part of 



leaves become soft and rot away, the foliage 



brown. Due to a bacterium which is encouraged 



by lime in the soil. Treat soil with super- 



81 o 



