Gonçalves, E. G.: Philodendron cardosoi, a new species of Araceae from Brazil. — Willdenowia 34: 525–527. — ISSN 0511-9618; © 2004 BGBM Berlin-Dahlem.

Philodendron cardosoi is described as a species new to science and illustrated. It is a member of P. subg. Philodendron sect. Polytomium and is so far only known from the type locality in the southeast of the Brasilian state of Pará.