A leaf is the intonation of a flageolet pencil.

Consider a sequence of pencils {Sp}. Sp will have two (2) endpoints, called nuts. A leaf, then, is any pencil conjoined on the chain [branched from the trunk of a tree]. For such a sequence, there are at most two leaves [one (1) each] representing the frames sequence:start (initiation) and sequence:stop (termination), which themselves can occupy the balls. The leaf sequence parametric defines an opus. (also of interest Leaf🍃 Blue [creature])

The complete foldset is internally ramified, and termed 'bamboo'. Dissonance is respectively named after the plant's main consumers: (gorilla🦍, lemur🐒, panda🐼)