274 " Wilt " or " Crown-Rot " Disease of Carnations 



24. vii. 14. Colour on undersurface, especially in dried up plates, 

 honey yellow (Plate 35. 4). Growth greyish rather 

 than pink. 



Sterilised Carnation leaves. (PI. XXXVIII, figs. 5 and 7.) Inocu- 

 lated 13. vii. 14. 



18. vii. 14. Greyish mildewy growth (no pink). Chlamydospores inter- 

 calary, apical, or on short branches, majority 13-2-19-8/x 

 diameter. Conidia of various lengths and septations. 



24. vii. 14. On undersurface of dried up plates colour in places honey 



yellow (Plate 35. 4). 



Potato plugs. (PL XXXVIII, fig. 6.) Inoculated 6. vii. 14. 

 9. vii. 14. Dense cottony pure white growth forming a felt-like layer 

 1-2 mm. thick. Mycelium swollen and macroconidia. 

 Chlamydospores vary greatly, usually 23'1/u, diameter. 

 Conidia measure from 26-4-49-5/>t in length, fusiform, 

 septa 0-5. 

 18. vii. 14. On side of tube where growth comes into contact with 

 glass, colour in places honey yellow (Plate 35. 4); 

 on upper region of slant colour yellowish grey, below 

 this growth more fluffy, pure white and pierced by 

 small raised hummock-like bodies at the apex of each 

 of which is a water-drop. 



25. vii. 14. In places where growth rests on cotton-wool a leaden 



grey (Plate 353. 4) ring; in same neighbourhood colour 

 in places dark chocolate brown (Plate 342. 1). Raised 

 region light pink tinge and as much as 8 mm. thick. 



Beerwort agar plates. (PI. XXXVIII, fig. 8.) Inoculated 9. vii. 11. 



18. vii. 14. Dense greyish mildewy growth, which on surface of medium 



is felt-like. Growth spreads all through dish. Reverse 



Petri dish colour yellow. This colour starts in the centre 



of a colony and spreads outwards. 



