Alcantarea imperialis
Introduction '''''Alcantarea imperialis''''' is a species of bromeliad in the genus ''Alcantarea''. This species is endemic to Brazil.It was first described in 1888 as ''Vriesea imperialis'' by Élie-Abel Carrière, who dedicated it to the emperor of Brazil with the species epithet, ''imperialis''. It was assigned to the genus, ''Alcantarea'',  by Hermann Harms in 1930.
Description This large terrestrial bromeliad was once classified as ''Vriesea imperialis'' but is now recognized as part of the genus ''Alcantarea''. It can be found growing on rocky slopes in the Serra dos Órgãos in Rio de Janeiro. It can tolerate dry conditions and full sunlight. Considered one of the giants of the genus, "its leathery leaves measuring 6 inches in width and 5 feet in length." It will take up to forty years before producing an imposing red inflorescence that reaches 8 feet, or even ten feet (3 meters)  in height. Its tank will hold up to thirty liters of rainwater. Alcantarea imperialis PC060946.jpg| in flowerAlcantarea imperialis PC060954.jpgFile:Alcantarea Imperialis red form.jpg|Alcantarea Imperialis  - Red FormFile:Alcantarea Imperialis green form.jpg|Alcantarea Imperialis  - Green Form
Cultivars * ''Alcantarea'' 'Ajax'* ''Alcantarea'' 'Black Cinder'* ''Alcantarea'' 'Gladys'* ''Alcantarea'' 'Helenice'* ''Alcantarea'' 'Purple Skotak'* ''Alcantarea'' 'Silver Plum'* ''Alcantarea'' 'Tarawera'* ''Alcantarea'' 'Totara Orange'
References ** BSI Cultivar Registry Retrieved 11 October 2009