Drosera rotundifolia, common sundew or round-leaved sundew, is a carnivorous plant that grows in fens, marshes, and swamps.
As one of the most widely grown sundew species, it has a circumboreal distribution and occurs throughout northern Europe, Siberia, northern North America, Japan, and Korea. The Drosera genus includes about 152 species of carnivorous plants in the Droseraceae family.
The leaves of this plant are arranged in a basal rosette. The hairy, narrow petioles, 1.3 to 5.0 inches long, have round blades 4 to 10 millimeters (0.16 to 0.39 inches).
The top of the leaf blade is densely clad with reddish glandular hairs that exude a gluey mucilage. A typical round-leaved sundew plant is about 3 to 5 centimeters (1.2 to 2.0 inches) in diameter and has an inflorescence that is 5 to 25 centimeters (2.0 to 9.8 inches) high.
The flowers grow on one side of a single, thin, glabrous stem extending from the leaf rosette center. The five-petaled flowers are pink or white in color and produce seeds 1.0 to 1.5 millimeters (0.039 to 0.059 inches).