The Collaborative International Dictionary
Petaline
Petaline \Pet"al*ine\, a. [Cf. F. p['e]talin.] (Bot.) Pertaining to a petal; attached to, or resembling, a petal.
Wiktionary
petaline
a. (context botany English) Pertaining to a petal; attached to, or resembling, a petal.