The Leaf Stone can only make 5 pokemon evolve. Gloom into Vileplume, Weepingbell into Victreebel, Exeggcute into Exeggcutor, Nuzleaf into Shiftry, and Pansage into Simisage.
Petilil will evolve with a sun stone, pansage with a leaf stone, panpour with a water stone, and pansear will evolve with a fire stone.
Moon Stone!
Cottonee evolves by sun stone. If you have a sun stone you can evolve it at any time.
Minccino evolves with the Shiny Stone!
The only Pokemon from Black/White you can evolve with a moon stone is Munna to Musharna.Otherwise, you can use a moonstone to evolve these Pokemon from previous generations while they are in Pokemon Black/White.Nidorina -> NidoqueenNidorino -> NidokingClefairy -> ClefableJigglypuff -> WigglytuffSkitty -> Delcatty
Pansage will evolve by using a Leaf Stone into Simisage.
Petilil will evolve with a sun stone, pansage with a leaf stone, panpour with a water stone, and pansear will evolve with a fire stone.
Happiny
It needs a Moon Stone to evolve.
Minccino
Pansage
Moon Stone!
makes electric type Pokemon evolve
You need a Shiny Stone to evolve into Cinccino.
Cottonee evolves by sun stone. If you have a sun stone you can evolve it at any time.
The only Unova Pokemon that evolves with a Leaf Stone is Pansage.
Minccino evolves with the Shiny Stone!