Budew, Subomie (スボミー, Subomī?) in Japan, is a dual-type Grass/Poison Pokémon. It was first introduced to Pokémon Diamond and Pearl series as Roselia's pre-evolve form.
It evolves into Roselia by happiness during the day, who evolves into Roserade by Shiny Stone.
At first glance, Budew barely has any similarities to its evolved forms, Roselia and Roserade. However, when the two "vines" that are on top of Budew's head open up, two small buds can be seen underneath each vine (one that is blue and the other being red). A short leaf shaped like a bib can be seen below its chin.
When it evolves into a Roselia, the two buds will eventually bloom into the Pokémon's flower-holding arms while its bib shaped leaf will grow into long skirt shaped leaves extending down to its grown body.
Read more about Budew: Roserade, Cranidos, Rampardos, Shieldon, Bastiodon, Burmy, Wormadam, Mothim, Combee, Vespiquen, Pachirisu, Buizel, Floatzel, Cherubi, Cherrim, Shellos, Gastrodon, Ambipom, Drifloon, Drifblim, Buneary, Lopunny, Mismagius, Honchkrow, Glameow, Purugly, Chingling, Stunky, Skuntank, Bronzor, Bronzong, Bonsly, Mime Jr., Happiny