Sundew is also known as

• Drosera is the largest genera of carnivorous plants. 
• The insectivorous plant covers leaves with the adhesive substance that shows up as the morning dew. Subsequently, it is known as the sundew. 
• The nature and the features of these plants differ from one place to another.
• Venus fly trap, another name is Dionea, is an insectivorous plant that is indigenous to the USA.
• Another name for the pitcher plant is Nepenthes. 
• Another name for witchweed is Striga, which is indigenous to Asia and Africa.

Hence, option C is the correct answer.