(2) Purchase of interest by member of family For purposes of this subsection, an interest purchased by one member of a family from another shall be considered to be created by gift from the seller, and the fair market value of the purchased interest shall be considered to be donated capital. The “family” of any individual shall include only his spouse, ancestors, and lineal descendants, and any trusts for the primary benefit of such persons.
26 USC § 704(e)(2)
None identified. Default scope is assumed to be the entire title.