224 * 
INTRODUCTION TO BOTANY. 
Cistalce. Globular apothecia, at first closed, and filled 
with spores adhering to filaments, afterwards splitting ir- 
regularly. Sphaerophorus. 
Cephalodia. Apothecia like the patellulae, but with 
scarcely any edge, and the disk more convex. Stereo- 
caulon. 
Globules, Globules . Globular apothecia, falling off and 
leaving a hollow wherein it was inserted. Isidium. 
Orbiculus. Flat orbicular apothecia, placed in the pe» 
ridium of the nidularia. 
Stroma. Irregular apothecia in which the sporae are 
immersed. Sphaeria. 
Spherules, Sphcerulce . Globular receptacles, opening at 
top, and emitting the spbrse, mixed with a gelatinous pulp. 
Cyphellce. Tubercles on the lower surface of the thallus, 
from the cortical substance, and usually white or pale. 
Sticta. 
Pulvinulu Branched tubercles, or shapeless masses co- 
hering together, and appearing like little shrubs or globes 
formed from the cortical substance of the thallus : they are 
usually black or dark green. Parmelia. 
Soredia. Whitish powder collected in small heaps, com- 
posed apparently of unattached gongyli. Ramalina, Alec- 
toria. 
Nucleus proligerus , Lamina proligera. A cartilaginous 
disk, distinct from the substance of the thallus, scarcely 
ever split, but coming out whole from the apothecia, or 
sometimes dissolving into a gelatinous substance, contain- 
ing sporae or gongyli. 
Perithecium. The visible cartilaginous or transparent 
skin containing the nucleus proligerus. Verrucaria. — It is 
probably present in all apothecia, but in many cannot be 
seen. 
Thalamia. Apothecia which consist of a nucleus proli- 
gerus contained in a perithecium. Yariolaria. 
Gongyles, Go?igylce, Propagines , Propagacula, Spores , 
Semina . Opake, globular corpuscles, sometimes nestling 
on the surface ; still more frequent in the substance, parti- 
cularly the cortical, of the thallus ; and constantly present, 
very copiously in the apothecia. 
