Here is a fanart of all the Pokemon Grass Starters (including my own made-up starter). ^^ I did this fanart before the new Pokemon Black & White games were announced, so I wasn't able to include the 5th generation grass starter.
From left to right: Chikorita, Bulbasaur, Treawn, Treecko, and Turtwig.
Here is the Pokedex entry for my made-up starter:
Treawn (Tree + Fawn)
Stats: High HP, High speed, Low special attack
Pokedex Entry: Very cheerful and sociable, groups of TREAWN can often be found playing together in the lush rainforests.
Artist Comments: Aside from Stantler, there aren't any deer Pokemon. This was quite surprising, seeing as deer were considered sacred in ancient Japan. So, I decided to make this starter! It is probably my favorite of the three. X3
*Drawn using Ultra Thin Sharpie and Fine Point Sharpie
*Colored using Prismacolor Soft-lead Color Pencils
*Image completed in 2009
Pokemon (c) Satoshi Tajiri, Game Freak, Nintendo
Treawn (c) GenkoNoMiko