8 Mycetozoa of North America 



Lime-knots. Expansions in the threads of the capiUitium 

 containing granules of Ume. 



Nodes. In the genus Cribraria, the thickenings at the junc- 

 tions of the threads of the net in the upper part of the sporangia) 

 wall. 



Obconic. Inversely conical. 



Peridium. The outer wall or covering of a sporangium, 

 which encloses the capillitium and spores, and may be of more 

 than one layer. 



Piriform. Pear-shaped. 



Plasmodic granules. Minute, usually colored granules in 

 the walls of sporangia in the genera Cribraria, Dictydium, and 

 Lindbladia. 



Plasmodiocarp. An individual unit of a colony of sessile 

 fruiting bodies, similar internally to sporangia, but not uniform in 

 size or shape, and elongated, curved, branched, netted, or effused. 



Plasmodium. A mass of naked protoplasm, formed by the 

 union of many swarm-cells, which latter emerge from the spores 

 on germination; from the plasmodium, the fruiting bodies are 

 developed as sporangia, plasmodiocarps, aethalia, or sporophores. 



Pseudo-capillitium. The partly developed walls of the com- 

 ponent sporangia of an aethalium, which may resemble the threads 

 of a capillitium. 



Pseudo-columella. In the calcareous genera, a mass of con- 

 fluent lime-knots resembling a columella, but not attached to, or 

 forming part of the stalk or base. 



Pulvinate. Cushion-shaped. 



Rugose. Marked with wrinkles. 



Rugulose. Marked with fine wrinkles. 



ScLEROTiUM. The resting stage of the plasmodium. 



Sinistral. Opposite of dextral, that is, like a left handed 

 screw. 



Sinistrorse. Same as sinistral. 



Sporangium. An individual member of a colony of small, 

 symmetrical fruiting bodies, uniform in size, shape, and general 

 characters, and enclosing spores. 



Sporopiiore. a fruiting body bearing spores on the outside. 



Subul.vte. Awl-shaped. 



Terp:te. Cylindrical; circular in cross-section. 



Turbinate. Top-shaped. 



