Gersahl Greens

Gersahl Greens is a leaf of Gersahl Shrubs located in Uldum. If Friendly Alpaca is fed with it seven times, it will offer a quest to immediately receive Reins of the Springfur Alpaca. It can be fed once per day, and you do not need to feed it in 7 consecutive days to earn the mount.

Trivia

 * The name is a reference to Gysahl Greens from the Final Fantasy series, which are the preferred food of Chocobos.