The fragrance of the garland on its head has a relaxing effect. It withers if a trainer does not take good care of it.
(From Bulbapedia) Lilligant dons a scarlet flower with white spotted petals upon its head; said flower has golden filaments with red anther, resembling a crown. It possesses dark green, linear leaves under the flower, and light green, linear leaves underneath the darker leaves. One of the light green leaves, on the back of its head, is about as long as its body and resembles hair. Two light green leaves loosely hang down from its head. Its head and abdomen are white and its eyes, which resemble seeds, are a light shade of scarlet. It has dark green, linear leaves for arms, and a golden sepal under its neck. It wears a large, light green, tulip shaped collection of leaves, resembling a dress. There are two long, dark green, linear leaves coming from its back to around the bottom of its "dress". It also possesses another golden, sepal-shaped extension underneath its "dress", resembling feet.
The flower is on Lilligant's head is very difficult to coax into bloom. Once it does bloom, it will wilt if Lilligant is then neglected. The flower emits a sweet smelling aroma, and it is believed to have a relaxing effect on those exposed to the scent. It is a rare Pokémon that lives in forests. Lilligant is a female-only species with no male counterpart.
(From Bulbapedia) From its name and the curvature of its petals, Lilligant may be based on a lily, but the relaxing smell of Lilligant's flower is more akin to orange, pomelo, mandarin orange, or carnation flowers, all of which are used in essential oils for aromatherapy. With this, the leaves of its body may also be based on essential oil ingredients like spearmint and peppermint. Its crown and dress may be derived from Western high-class women's fashion during 1750–75. It could also be based on a dancer since its lower body resembles a ball gown, and several of the moves that it learns by leveling up contain the word "Dance"..
(From Bulbapedia) Lilligant may be a combination of lily and elegant.