In English the lyrics of the madrigal means something like:

"Among these green leaves, at the murmur of the billows, among these herbs and
flowers Aminta and Clori gathered the fruits of love.  Friendly and courteous
leaves formed hiding places which were the only to know the lovers' sweet and
blessed thefts.  Let Heaven guard you gracious like the laurel that preserves
its green from (the time of) Gemini to (the time of) Taurus."