SLIME FUNGI (MYXOMYCETES) 



251 



substratum. Small, often rounded sporangia, containing 

 numerous spores, are formed, especially in the autumn, and are 

 sometimes very conspicuous owing to their brilliant colouration 

 (e.g. the yellow-coloured Flowers of Tan, common on tanner's 



FIG. 134. Various Basidiomycetes. A, Cantharellus. B, Clavaria cinerea. 

 C, Lycoperdon. D, Scleroderma vulgare (on the left entire fructifica- 

 tion, on the right the latter in vertical section, showing the wall and 

 the dark mass of contained spores). E, Surface-view of small part 

 of hymenium of Boletus. F, Hydnum repandum. G, Ustilago longis- 

 sima (on leaf of Glyceria aquatica). 



bark). The group also includes some parasites, one of the most 

 noteworthy (Plasmodiophora brassicce) being that responsible for 

 the disease known as " Finger and Toe " in Cabbages, etc. 

 (Fig. 135). 



