||In*du"si*um (?), n.; pl.
Indusia (-&adot;). [L., an under garment, fr.
induere to put on: cf. F. indusie the covering of the
seed spots of ferns.] (Bot.) (a) A
collection of hairs united so as to form a sort of cup, and inclosing
the stigma of a flower. (b) The immediate
covering of the fruit dots or sori in many ferns, usually a very thin
scale attached by the middle or side to a veinlet.
(c) A peculiar covering found in certain
fungi.