vernation
Concise Oxford English Dictionary © 2008 Oxford University Press:
vernation /vəːˈneɪʃ(ə)n/
▶noun Botany the arrangement of bud scales or young leaves in a leaf bud before it opens. Compare with aestivation.
– origin C18: from mod. L. vernatio(n-), from L. vernare ‘to grow (as in the spring)’.
'vernation' also found in these Oxford entries:

