Word Study
spongiole
CIDE DICTIONARY
spongiole, n. [L. spongiola a rose gall, small roots, dim. of spongia: cf. F. spongiole.].
A supposed spongelike expansion of the tip of a rootlet for absorbing water; -- called also spongelet . [1913 Webster]
For further exploring for "spongiole" in Webster Dictionary Online