E. M. C. Leme, E. P. Fernandez, A. P. Fontana, P. S. D. Almeida, and R. C. Forzza, “Two ornamental species of Cryptanthus (Bromeliaceae, Bromelioideae) on the brink of extinction: a new species and its congener from the 19th century”, Phytotaxa, vol. 763, no. 3, pp. 201–218, Jun. 2026.