Before James ran away, Jessiebelle had Vileplume as an Oddish. Through time, it evolved into a Vileplume.
When James attempted to run away, Vileplume used Stun Spore to daze him. When Growlie appeared, Jessiebelle ran into Growlie's pet house and her Vileplume used Stun Spore, but was defeated by Growlie's Flamethrower.
Vileplume returns in The Treasure is All Mine! and it reveals to learned Solar Beam to blast both Ash and Brock who holds the door filled with rocks to make Jessiebelle confront James one final time.