PHYSARACBiE. 
27 
KEY" TO THE GENEEA OF PHYSARACEJE. 
A. Oapillitium a coarse network charged with lime throughout. 
(2) Badhamia. 
Fig. 10. — Badhamia utricularis Berk, 
a. Cluster of sporangia. Magnified 3^ times, 
1). Fragment of capiUitium and spore-cluster. 
Magnified 140 times. 
Fig. 10, 
B. Oapillitium a delicate network of threads with vesicular ex- 
pansions filled with lime-granules (= lime-knots), 
A. Sporangia combined into a convolute sethaliura. 
(4) FULIGO. 
Fig, 11, — Fuligo sejjtica Gmel, 
a. -^thalium. One-third natural size, 
5. Oapillitium threads with lime-knots and two 
spores. Magnified 120 times. 
Fig, 11, 
B. Sporangia single, scattered or aggregated. 
a. Sporangium-wall membranous, with innate lime- 
granules either in clusters or compacted and chalky. 
Sporangia subglobose or plasmodiocarps, 
(3) Physarum, 
Fig. 12. — Physarmn nutans Pers. 
a. Two sporangia. Magnified 9 times, 
b. Oapillitium threads, with lime-knots, attached to 
a fragment of the sporangium-wall. Magnified 
110 times. 
O 
O 
Fig. 12. 
