GLOSSARY 



Aethalium. a compound fruiting body, often large, formed 

 by the close union of many sporangia, with the intervening spor- 

 angial walls more or less imperfectly developed, and enclosed 

 usually in a cortex. 



Anastomosing. Applied to the threads of a capillitium, when 

 they are joined repeatedly to form a mesh or network. 



Applanate. Flattened out. 



Capillitium. The system of threads, or, the branches from 

 the columella, within the sporangium, among which the spores 

 are distributed. 



Cartilaginous. Applied to a stout, uniformly thickened 

 membrane. 



Columella. That part of the stalk, or an elongation thereof 

 extending into the sporangium; or, in sessile forms, a supporting 

 structure for the capillitium, arising within and from the floor of 

 the sporangium. 



Cortex. The stout covering or wall usually enclosing the 

 component sporangia of an aethalium. 



Dextral. Winding like the threads of a right handed screw 

 as seen from the outside. Applied to the spirals on the threads 

 of the capillitium in species of the family Trichiaceae. 



Dextrorse. Same as dextral. 



Effused. Flattened and thinly spread. 



Elaters. Single threads of the capillitium, free, doubly 

 terminated, and marked with spiral bands or thickenings. Ap- 

 plied to the capillitium in the genera Trichia and Oligonema. 



Fruiting Body. A form produced by the plasmodium and 

 carrying spores, which germinate and eventually produce another 

 Plasmodium. 



Fusiform. Spindle-shaped; tapering at both ends. 



Gregarious. Developing closely in association, not solitary, 

 and not clustered. 



Hyaline. Glassy or transparent. 



Hypothallus. The membrane or strands at the bases of 

 sporangia and aethalia, sometimes connecting them. 



Lenticular. Resembling in shape a convex lens. 



7 



