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S^* INTRODUCTION TO BOTANY.
CistulcB. Globular apothecia, at first closed, and filled
with spores adhering to filaments, afterwards splitting irregularly.
Sphaerophorus.
Cephalodia. Apothecia like the patellulse, but with
scarcely any edge, and the disk more convex. Stereocaulon.
Globules, Glohulce. Globular apothecia, falling off and
leaving a hollow wherein it-was inserted. Isidium.
Orhiculus. Flat orbicular apothecia, placed in the peridium
of the nidularia.
Sirofna. Irregular apothecia in which the sporae are
immersed. Sphaeria.
Spherules, Sphcerulce. Globular receptacles, opening at
top, and emitting the sporse, mixed with a gelatinous pulp.
Cyphellce. Tubercles on the lower surface of the thallus,
from the cortical substance, and usually white or pale.
Sticta.
Pulvinuli. Branched tubercles, or shapeless masses cohering
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, composed
apparently of unattached gongyli. Ramalina, Alec-
toria.
Nucleus proligerus, Ijumina 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, containing
sporae or gongyli-
Peril hecium. 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 proligerus
contained in a perithecium. Variolaria.
Gongyles, Gongylcs, Propagines, Propagacula, Sporce,
Semina. Opake, globular corpuscles, sometimes nestling
on the surface ; still more frequent in the substance, particularly
the cortical, of the thallus ; and constantly present,
v€ry copiously in the apothecia.