Botanists have discovered a new giant water lily with lily pads that can grow to nearly 10 feet wide. Researchers previously thought there were only two species of giant water lilies.

Victoria boliviana is the world’s biggest known water lily species, with leaves growing to nearly 10 feet wide in the wild, according to a news release from the gardens in Kew, west London.

The lily had been a part of Kew's Herbarium, a massive collection of preserved plants, for 177 years. According to Kew, this is the first discovery of a new giant water lily species in over a century.

An enormous water lily in London’s Royal Botanic Gardens has been discovered to belong to an entirely new species, after 177 years in the gardens’ herbarium.