Phyllis (Φυλλίς) comes from the Greek phyllon, meaning "leaf" or "foliage." In Greek myth, Phyllis is the Thracian princess who hanged herself for love of Demophon and was transformed into an almond tree.
Phyllis peaked at #36 in the U.S. in 1929 and has since declined. The actress Phyllis Diller (1917-2012) was a notable bearer.
Phyllis reduces to one — the number of leafy transformation.