12 PARKIN • ITNCl PATJASTTTO 



\\} phi . The .-Menial part of the fungus develops as fol- 

 lows: — Byphse radiate out on all sides from below the scale 

 r a millimetre or more over the leaf surface. Each bypha 

 produces at frequent intervals short lateral branches, the 

 tidiopl - L6-20pin lencrib. Each conidiophore bears 

 '•ii its apes a spherical bead of conidia, enveloped in mnoi- 

 Bg. 53). This head with a diameter oi 4p appears when 

 ir] a- glistening globule, the individual oonidia not being 

 listingaishable. On treatmenl with water the mucilaginous 

 matter dissolves and the conidia are dispersed; sometimes 

 i he last one produced remains attached to the tip of the 

 bypha. In order to examine the conidia in situ, the fungus 

 should be mounted in dilute acetic acid, which prevents the 

 mucilage from dissolving and renders the conidia visible 

 lit.'. .VI). Five to seven are usually present in one head. 

 They are really abstricted from the conidiophore in suc- 

 tion, bul instead of remaining in a chain become aggre- 

 gated together into a spherical mass by the mucilage which 

 is secreted. Some infected scales kept in a damp atmosphere 

 showed oonidiophores bearing conidia in short, curved 

 bains, owing perhaps to mucilage not being able to mass 



th< • tln-r. 



["he colourless conidia are minute measuring :5\ r >-4x Wp. 



almost identical with those given b\ Zimmermann 



forth* Java form. Th<-\ are shortly cylindrical or nearly 



J <»r slightly Bausage-shaped. 



in'- conidiophore may be so numerous that bere and 

 mucilaginous beads, which touch one another, fuse 

 to i "i in lar . ■ i masses of conidia. 



The Lateral short branches of thi main byphn, which here 

 • termed < - "H diophores, maj even branch themselves, so 

 as to produoe i wo to four beads ol oonidia I Bg. ^~2). 



it i call from Bfected material, bul with i icternal 



fungus visible, be rem >ved from a leaf and placed on a mioro- 

 scopic Blide in i damp chamber, th<- development of the 

 conldial pari outside th< inseol can be readily followed. 

 After one daj the radiating byphsa proceeding from th<- 



