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



Uschinshfs fluid in tubes. (PI. XXXIX, figs. 11 and 12.) Inoculated 

 13. vii. 14. 



20. vii. 14. In two tubes delicate mycelial growth in liquid. In 

 remaining tube this growth has come to the surface 

 where it forms a thick, pure white cottony growth, 

 which climbs up the sides of the tube and rests on a 

 light grey band. 



27. vii. 14. The tube above shows the following regions in surface 

 growth : 



(1) Leaden-grey ring (Plate 353. 4). 



(2) Above this mineral-brown (Plate 339. 3). 



(3) Mycelium creeping up sides pure white excepting 

 just above (2) where it is light yellow. Hanging 

 from (1) into the liquid are two hard, wart-like 

 bodies (above is a small pocket arrangement). 

 A section through one of them showed nothing 

 of peculiar interest. Chlamydospores abundant in 

 this region. Mycelium, etc., coloured and oil 

 globules frequently large. 



Solution N + agar plates. (PI. XL, fig. 13.) Inoculated 18. vii. 14. 



22. vii. 14. In first two plates thick greyish felt-like growth covering 

 whole Petri dish, furrows where originally separate 

 colonies come into contact. Later plates colonies 

 greyish, thick, dense in centre, towards periphery 

 mildewy with a light pink tinge, raised 1-15 mm. 



29. vii. 14. Growth creeps up sides of Petri dishes, mildewy. Colour 

 on reverse of Petri dishes: (1) where growth touches 

 glass, carrot-red (Plate 55. 1); (2) where growth is 

 raised, mineral-brown (Plate 339. 4). Chlamydospores 

 19-8-33-0/z diameter. 

 Conidia : 



