No, you cannot. You can evolve Misdreavus into Mismagius in Diamond/Pearl or later versions using a Dusk Stone.
You cannot evolve Misdreavus in Crystal.
trade from leafgreen
Well in the 4th gen Pokemon games if you use a dusk stone on misdreavus it will evolve to mismagius.
misdreavus does not level evolve into mismagius it evolves by using a dusk stone
No, you cannot. You can evolve Misdreavus into Mismagius in Diamond/Pearl or later versions using a Dusk Stone.
You cannot evolve Misdreavus in Crystal.
Unfortunately no. Misdreavus does not evolve on leaf green. However, if you get Pokemon diamond/pearl/platinum on Nintendo ds, it evolves into Mismagius using the dusk stone.
trade from leafgreen
Well in the 4th gen Pokemon games if you use a dusk stone on misdreavus it will evolve to mismagius.
misdreavus does not level evolve into mismagius it evolves by using a dusk stone
You cannot find Misdreavus in Pokemon Ruby. To get a Misdreavus you need to trade for one from a copy of Pokemon LeafGreen.
Misdreavus and Murkrow.
it evolves into mismagious
The Dusk stone will evolve Murkrow into Honchkrow and Misdreavus into Mismagius.
There are no Misdreavus in Pokemon platinum either migrate from LeafGreen or trade with Pokemon Pearl.
You can't evolve Yanma in Leafgreen. This is because Leafgreen was made before Yanmega was made. So basically in Leafgreen, Yanma is a Pokemon that can't evolve.