PHTSARACEjE. 



KEY TO THE GENERA OF PHYSARACE^. 



27 



A. Capillitium a coarse network charged witli lime throughout. 



(2) Badhamia. 



Fig. 10. — Badhamia utrioularis Berk. 



a. Cluster of sporangia. Magnified 3J times. 



b. Fragment of capillitium and spore-cluster. 



Magnified 140 times. 



£, Capillitium a delicate network of threads with vesicular ex- 

 pansions filled with lime-granules (^ Hme-knots). 

 A. Sporangia combmed into a convolute sethalium. 



(4) FuLIGO. 



Fig. 11. — Fuligo septica Gmel. 

 .iEthalium. One-third natural size. 

 Capillitium threads with lime-knots and two 

 spores. Magnified 120 times. 



Fig. 11. 



Sporangia single, scattered or aggregated. 

 a. Sporangium-wall membranous, with innate lime- 

 granuies either in clusters or compacted and chalky. 

 Sporangia subglobose or plasmodiocarps. 



(3) Phtsarum. 



Fig. 12. — Physarum nutans Pers. 

 Two sporangia. Magnified 9 times. 

 Capillitium threads, with lime-knots, attached to 



a fragment of the sporangium-wall. Magnified 



110 times. 



Fig. 12. 



