interdigitate

verb3

1. •
   To fold or lock together, as when the fingers of one hand are laced between those of the other.
2. •
   To become folded or locked together, like the fingers of a folded hand.
3. •
   (figurative) To intermingle; to present alternately items from one group and then another.

   • Thirdly, I continue to attempt to interdigitate the taxa in our flora with taxa of the remainder of the world. — 1992