THE UNGEEIAN PERIOD 35 



In his book, Exantheme der Pflanzen,' published in 

 1833, linger devotes 20 pages to the relation of fungi to 

 the plants on which they live. He calls them entophytes 

 or "disease organisms," not parasites,^ holding firmly 

 to the idea of the previous period that they originate 

 from the diseased host tissues, but at the same time he 



Franz Unger. 

 The greatest autogenetist. (After a portrait in Wittrock's "Acta Horti 

 Bergiani.") 



recognizes them as distinct organisms, worthy of names 

 and classification. 



1 Unger, Franz: Die Exantheme der Pflanzen und einige mit diesen 

 verwandete Krankheiten der Gewachse, pathologisch und nosographisch 

 dargestdlt, pp. 1-421, Wien, 1833. 



2 Unger, Franz: Originare Bildung der Krankheitsorganismen. In 

 Beitrage z. Vergleichenden Pathologic. Sendschreiben an Herrn Pro- 

 fessor Schonlein, pp. 39, 40, Wien, 1840. 



