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).

This species is also known as the Empress of Brazil because of its origin in South America and in reference to the wife of Emperor Dom Pedro.

[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.