372 JOURNAL OF, THE JIOYAL HORTICULTURAL SOCIETY. 



LILY DISEASES. 



By Geokge Massee, F.L.S., F.R.H.S. 



roRTY-FiVE different kinds of fungi are known to grow on the various 

 species of Lilium ; some of these are quite rare and of interest only from 

 the botanical standpoint, others do no harm whatever to the plant they 

 grow upon; but, judging from what we know respecting the adaptive 

 habits of many fungi, it is wise not to tolerate their presence on or about 

 Lilies, notwithstanding the fact that nothing indicative of parasitism can 

 be urged against them. A third lot, three in number, are too well known 

 as destructive pests, which every now and again, when climatic and other 

 conditions are favourable, manifest themselves under the form of an 

 irrepressible wave of disease. 



These three kinds of fungi will be considered in the order of their 

 relative destructiveness. 



BOTRYTIS CINEREA, PerS. 



Some years ago Professor Marshall Ward gave an exhaustive and 

 beautifully illustrated account (1)* of the life-history of a species of 



Fig. 190.— Botrytjs CINEREA. 1. Flower-bud of Lily attacked by the fungus. Nat. 

 size. 2. Fruiting branch of the fungus : x 50. 3. Head of fruiting branch : x 500. 



Botrytis that caused orange-brown or buff specks to appear on the stems, 

 pedicels, leaves and flower-buds of Lilium candidum. These specks 

 gradually increase in size and become covered with a delicate grey pile, 

 consisting of the fructification of the fungus. When this stage is reached 



* See p. 376, " Literature Quoted." 



