672 THE SUBDIVISIONS OF THE VEGETABLE KINGDOM. 



insect, bud and sprout there with great activity. JEntomophthora radicans commonly 

 attacks caterpillars of the Cabbage-white (Pieris Brassier). Having spread through 

 its interior, it sends out tufts of hyphse on the ventral side (fig. 383 ^ thus rooting 

 the caterpillar to the substratum. It now develops hyphae all over the body 

 wrapping up the caterpillar like a mummy (fig. 383 2 ). At the tips of these hyphse 

 conidia are abstricted and shot off to some little distance (figs. 383 3 ' 4 ' 5 ). A con- 



Fig. 383. Entomophthorero : Entomopkthora and Empusa. 



1 A caterpillar of the Cabbage-white Butterfly attacked by Entomophthora radicans. 2 The same caterpillar fully invested by 

 the Fungus. Tufts of conidia-bearing hyphse from the back of the caterpillar. * Conidia separating from the tips of the 

 hyphse. Disarticulated conidia. A Fly attacked by Empusa Muscce. "> Hyphse of Empusa Muscce, from the tips of 

 which conidia are being shot off. Conidium inclosed in sticky mucilage. 1,2,6 nat. size; 8x80; *,,x300; 8 X 630. 

 (After Brefeld.) 



jugation of branches sometimes occurs, whilst in other cases fruits are formed 

 parthenogenetically. Empusa Muscce produces a disease common amongst flies in 

 the autumn. The Fungus having effected an entrance into the body of a fly 

 gradually fills it up with its sprouts. In due time tubes penetrate the surface and 

 develop conidia at their extremities (fig. 383 7 ). These are shot off as in the last 

 case, and one may often see flies stuck to the window-pane in autumn surrounded 

 by a halo of these conidia (fig. 383 6 ). 



About 80 species of Entomophthorese are known. 



