Chlorophyll
Boosts Speed in sunlight.
Pokémon with this ability
Oddish
Gloom
Vileplume
Bellsprout
Weepinbell
Victreebel
Exeggcute
Exeggutor
Tangela
Bellossom
Hoppip
Skiploom
Jumpluff
Sunkern
Sunflora
Seedot
Nuzleaf
Shiftry
Tropius
As a hidden ability
Not in the game yet
No Pokémon can be obtained with its hidden ability yet, so these are listed for reference.
Bulbasaur
Ivysaur
VenusaurAs of v0.75.0 · engine 22ba612f