Proctor & Cedeño-Mald. 1960 - Acevedo-Rodríguez P, Strong MT, Nicolson DH, Proctor GR, Cedeño-Maldonado JA, Lewis P (2005) Monocotyledons and Gymnosperms of Puerto Rico and the Virgin Islands. Contributions From The United States National Herbarium 52: 1-415. Retrieved from http://www.jstor.org/stable/23493261
There is no corrections for Guzmania lingulata var. concolor yet.