CLASSIFICATION OF FUNGI 65 



coffee, tea, rubber, mango, and cacao ; C. Zimmermani, 

 Sacc. and Sud., of the rubber; C. lilaco-fuscum, Berk, 

 and Cast, of the cacao ; Hymenochateae noxia, Berk. , 

 of the cacao and rubber ; C. theae, on the tea ; C. vagum, 

 B. and C., var. solani, Burt., of the potato, tomato, 

 lettuce, beet, pea, cucumber, and melon. 



The family Hydnaceae is readily recognised by the 

 hymenial surface being spread over tooth -like out- 

 growths of the sporophore, or in some cases wart-like 

 or plate-like out-growths. This family includes the 

 Irpex flava, Klotsch, which causes a root disease of 

 the coffee and rubber (see pp. 168, 196, 244). 



The family Polyporaceae contains the great majority 

 of the pore-bearing fungi. In these fungi the sporo- 

 phore is filled with small pores opening on one surface, 

 and these pores are lined with hymenium or spore- 

 bearing tissues. Some are fleshy and a few are edible, 

 but the great majority are leathery, corky, or woody. 

 This family includes the genus Polyporus, which con- 

 tains several species causing root-disease on the tea, 

 cacao, and rubber ; P. obliquus and P. fumosus, on 

 the citrus trees ; and undetermined species on tea and 

 rubber. It also includes Fomes lucidus, (Leys) Fr., on 

 the betel-nut palm ; F. semitostus, Berk., on the rubber 

 and cacao ; Poria vincta, Berk. , on the rubber ; P. 

 hypolateritia, Berk., and Trametes theae on the tea. 



Agaricinaceae is the largest family, and is character- 

 ised by the spores being borne on a hymenium which 

 is spread over lamellae or gills. It includes the common 

 mushrooms and toadstools, many of which are edible. 

 In this family is found the genus Marasmius which 

 contains the following species : M. sacchari, Wakker 

 (Fig. 35), and the var. hawaiiensis, Cobb, M. plicatus, 

 Walker, M. bambusinus, Fr., which cause diseases of 

 sugar-cane ; M. rotalis on the roots of tea, on the cacao, 

 and on the nutmeg ; M. semiustus, B. and C., on the 

 banana ; M. equicrinus, Mull., on the cacao ; M. rotalis, 

 B. and Br., and M. sarmentosus, Fr., of the tea; 

 Agaricus citri and A. hesperidium, of the citrus fruits ; 



F 



