A lot of strange things seem to happen in bogs, not the least of which is the presence of carnivorous plants. Drosera rotundifolia is one such plant, which, according to Go Botany, lives in acid bogs and is known for having “the highest concentration of vitamin C in its leaves of any known plant.” The round-leaved sundew, with its showy red color, feeds on insects attracted to it because of the sugary drops covering its leaves. This circumboreal species is one of the most widespread sundews, found in bogs, marshes and fens from Europe to North America to Siberia, Japan and Korea.