Taste buds are not usually present on : 

Concept:-

• Taste buds are specialized sensory structures that allow us to perceive taste. They are primarily located on the tongue and are distributed among various types of papillae, except for the filiform papillae.

The types of papillae on the tongue that contain taste buds are:

• Fungiform papillae - These are mushroom-shaped structures found mostly at the apex and sides of the tongue and contain taste buds.
• Vallate papillae - These are large, circular papillae located at the back of the tongue in a V-shaped configuration and contain a significant number of taste buds.
• Foliate papillae - These are leaf-shaped structures found on the sides at the back of the tongue and also contain taste buds. (Though it is not listed in the options provided, it's relevant to the context of taste bud location.)
• The filiform papillae, on the other hand, do not contain taste buds. They are the most numerous of the tongue papillae and are responsible for the texture and sensation of the tongue's surface, aiding in the manipulation of food but not in taste perception.
• Mucosa of epiglottis may contain taste buds as well, indicating the presence of taste reception areas beyond the commonly recognized zones on the tongue.

Therefore, the correct answer is:

• Filiform papillae