182 THE MYXOMYCETES OF P1CTOU COUNTY. MOORE.- 



3. Ceratiomyxa porioides (Alb. & Schw.) Schroter. In 

 this species the plate-like sporophores are connected together 

 after the manner of a honeycomb, giving the fructification the 

 appearance of a small, sessile, upturned polyporus. The plas- 

 modium is watery white and after emerging for fructification 

 forms a mucilaginous porose layer extending over a considerable 

 area. The spores are similar to those of the preceding species. 



Found on decaying hemlock blocks 



Lister in his monograph of the Mycetozoa includes both of 

 the foregoing species in Ceratiomyxa mucida Schroter. 



Myxogastres (Fries) Macbr. 



Myxomycetes in which the spores are developed in spor- 

 angia. The germinating spores produce amoeboid swarmers 

 which eventually lose their flagella and become amoeboid bodies. 

 They multiply by division and, later, fuse to form plasmodia. 

 In the mature condition fruit bodies are formed consisting 

 chiefly of spores enclosed in a structureless limiting membrane, 

 the peridium, which may consist of one or two layers. In most 

 cases the sporangia contain in addition to the spores a structure 

 consisting of filaments or tubules, of characteristic form, the 

 capillitium. 



Order I. 



PHYSABACE^. 



Capillitium present, generally containing lime deposits in 

 the form of amorphous granules which are aggregated in vesi- 

 cular expansions of the capillitial threads forming the so-called 

 lime knots. Lime granules also occur in connection with the 

 peridium and stipe. 



In the family Physarese the lime deposits occur both in the 

 peridium and in the capillitium which is intricate. In the 

 family Didymiese the capillitium is comparatively simple and 

 the lime deposits are confined to the peridium. 



