Grayum (K.Krause) 1996 - Grayum MH (1996) Revision of Philodendron Subgenus Pteromischum (Araceae) for Pacific and Caribbean Tropical America. Systematic Botany Monographs 47: 1-233. doi: 10.2307/25027858.
There is no corrections for Philodendron aurantiifolium subsp. calderense yet.