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TEXT-BOOK OF FUNGI 



in colour), globose or somewhat depressed, immersed or 

 superficial ; mouth or ostiolum circular, never elongated. 



Sphaeroideae. 



FIG. 122. Phoma sanguinolenta, a parasite on 

 cultivated carrots, etc. i, a diseased carrot root ; the 

 fungus forms deep wounds in the substance of the 

 root, on the surface of which the perithecia are 

 densely aggregated ; 2, diseased stem of carrot ; 

 3, portion of a diseased spot showing perithecia 

 emitting masses of conidia in mucilaginous, tendril- 

 like strings ; 4, section of a perithecium with- a tendril 

 of spores. Figs, i and 2, reduced ; remainder mag. 



Perithecia and stroma, when present, rather soft and 

 fleshy, never carbonaceous, bright or clear in colour 



