The Cuccodujo series is a series of numbers that manifests in xel'naga essence, as well as flora and fauna that contains xel'naga essence. Flora containing this essence may manifest it in their number of leaves and pattern of margins. It is compared to the Fibonacci series which is apparent in terran flora and fauna.[1]


  1. Zahn, Timothy (November 8, 2016). StarCraft: Evolution. Del Rey Books. ISBN 0425284735.