The round-leaved sundew is a perennial herbaceous plant that grows to between 7 and 25 centimetres tall. The oval leaves are arranged in a basal rosette and grow up to 1 centimetre in diameter. They are covered with reddish-brown hairs that produce a sticky secretion. The five-petalled white flowers grow on leafless stalks.
The plant flowers from late July to late August. It produces multiple seeds in three-winged capsules. The plant feeds on insects that are attracted to its bright red colour and the sugary secretion covering its leaves.