In botany terms the difference between ptyxis and prefoliation
is that ptyxis is the way in which an individual leaf is folded in the bud while prefoliation is vernation (arrangement within a bud) of leaves.
ptyxis
English
Noun
(-)
(botany) The way in which an individual leaf is folded in the bud.
Usage notes
* The arrangement of several leaves is called (vernation) or (prefoliation)
prefoliation
English
Noun
(en-noun)
(botany) Vernation (arrangement within a bud) of leaves.
See also
* prefloration
* ptyxis