202 ENDOSPORE^. [mAEGARITA. 



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 

 muscoides. — Argentine Republic. A beautiful but paradoxical species, 

 exactly resembling a folioolous JEcidium ; it will probably form the 

 type of a new genus. 



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

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

 species does not belong to the Mycetozoa. 



EXCLUDED PROM THE MYCETOZOA. 



P. strohiUna Er., P. decipiens Berk. & Br., and P. pioea Berk. 

 & Br. 



Order III. — MARGAEiTACEiE. Sporangia normally sessile, spo- 

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

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

 pinkish or yeUowish-grey. 



KEY TO THE GENEEA OF MAROARITAGE^. 



CapiDitium profuse, long, coiled, hair -like, 0-5 to 2 /a thick. 



(40) Margarita. 



Fig. 48. — Marganta metallica Lister. 

 a. Two sporangia. Magnified 6 times. 

 S. 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. — Bianema depressum Lister. 

 a. Plasmodiocarp. Magnified twice. 

 h. Capillitium attached above and below to the 

 walls of the sporangium. Magnified 50 times. 

 c. Spore. Magnified 660 times. 



% 



Fig. 49. 



