Worsleya is a genus of Brazilian plants in the amaryllis family Amaryllidaceae, cultivated as an ornamental because of its showy flowers.

[6][7][8] It is endemic to the marshy top of a mesa called "Mount Cuca" 30 miles (52 km) north of Rio de Janeiro.

[9] It is one of the largest (around 1.5 meters (five feet) high by up to one foot (30 centimeters) thick near the base)[10] and also rarest members of the subfamily Amaryllidoideae (family Amaryllidaceae).

[citation needed] It grows in very extreme and moist environments, and is commonly found near waterfalls in rich soil situated on granite rocks (which is why it is sometimes considered to be a lithophyte) and sunny places.

[citation needed] The plant has a large bulb that produces a high stem with green recurved leaves.