=Imbricated=, _a._ L. _imber_, rain, _imbrex_, a hollow roof tile to
shed rain; _imbricare_, to cover with roof tiles; lying over one
another, or lapping, like tiles on a roof. Applied to sepals that
overlap over a bud.
=Included=, _a._ L. _in_, in, _claudere_, to shut, close; confined
within something. Said of the stamens when they do not project
beyond the mouth of the corolla.
=Inherit=, _v._ L. _in_, in, _heres_, heir; to take by descent from an
ancestor. Plants, like people, inherit their characteristics from
their parents.
=Iron=, _n._ A very abundant and very important metal. In small
quantities it enters into the composition of plants and animals.
=Irritate=, _v._ L. _irritare_, to excite; to excite to action.
Rubbing irritates the skin and causes extra blood to flow to the
spot and thus redden it. Rubbing may also irritate plant tissues and
cause an extra flow of sap to the part irritated.