68 



I-VNiiOIIi PESTS OF < I'LTIVATED PLANTS. 



spots, caused by the dark threads and mycelium of this mould, and soou 

 decay. 



The threads grow in tufts, and are long and rlexuous, with thin walls, 

 pale brown, septate, and occasionally branched, bearing at their apex the 

 conidia of variable size and form, some being elliptical and continuous, 

 others two-celled and longer, whilst others are cylindrical, with rounded 

 ends and two or three divisions (30-80 x 10 «), externally rough with 

 minute points and slightly coloured. 



When mature these conidia will germinate freely from] every joint. 



Spraying with potassium sulphide is stated to check the disease. To 

 prevent spreading, diseased leaves should be burnt. 



Sacc. Syll. iv. 2306; Cooke Journ. Q.M.G. 1877, t. 25, f. 13 ; Gard. 

 Chron. June 1877, fig. 163 ; Grevillea, v. 123. 



> 





Pia. '.». Dbomyobb Ebtthbonxi. L. Portion of a loaf showing clusters of the 

 fungus. N;it. Bizo. '-'. A single group of the fungus fruit known popularly as 

 • oluster-oup LOO. 8. Credo, or Bummer-spores : x 400. Teleuto- or 



wintei Bpon : 100. 



Suriu, J'»i;\m». 



Uromycea Scillarum (Grev.), PI. \'. fig. H6. 



This parasite is vcrj common on the loaves of the Wild Hyacinth, 

 and probably has thence found its way into gardens, where it attacks 

 the Leaves of Musca/ri botryoides and other species. 



The attacked leaves are blotched with paler spots, upon which the 



