The largest of the papillae are the vallate papillae, which are blunt-ended cylindrical papillae invaginations in the tongue’s surface—there are only about 8 to 12 vallate papillae in a single V-shaped line immediately anterior to the terminal sulcus of the tongue.
Foliate papillae are linear folds of mucosa on the sides of the tongue near the terminal sulcus of tongue.