202 



ENDOSPOREJE. 



[MARGARITA. 



globose, 6 to 7 //, diam., often irregularly angled from mutual 

 pressure, smooth, pale vinous with a yellow tinge. 



Hab. On living fronds of many species of fern and on Tillandsia 

 ntuscoides. Argentine Republic. A beautiful but paradoxical species, 

 exactly resembling a folicolous ^Ecidium ; it will probably form the 

 type of a new genus. 



From the description of the fimbriate sporangium-wall, mycelium- 

 like capillitiuni threads and angular spores, it is possible that this 

 species does not belong to the Mycetozoa. 



EXCLUDED FROM THE MYCETOZOA. 



P. strobilina Fr., P. decipiens Berk. & Br., and P. picea Berk. 

 & Br. 



Order III. MARGARITACE^E. Sporangia normally sessile, spo- 

 rangium-wall single, smooth, translucent ; capillitium abundant, 

 not consisting of separate elaters nor combined into a net ; spores 

 pinkish or yellowish-grey. 



KEY TO THE GENEEA OF MARGARITACE^E. 



Capillitium profuse, long, coiled, hair-like, O5 to 2 /x thick. 



(40) MARGARITA. 



Fig. 48. Margarita metallica Lister. 



a. Two sporangia. Magnified 6 times. 



b. Part of a long capillitium thread, and a spore. 



Magnified 250 times. 



Fig. 48. 



Capillitium of nearly straight threads, without spiral thickenings, 

 attached at both ends to the sporangium -wall. 



(41) DIANEMA. 



Fig. 49. Dianema depresswm Lister. 



a. Plasmodiocarp. Magnified twice. 



b. Capillitium attached above and below to the 



walls of the sporangium. Magnified 50 times. 



c. Spore. Magnified 560 times. 



