Scatigna, AV, Gonçalves, N, Valka, RJ, Souza, VC, Simões, AO (2015). "Two New Species of the Carnivorous Genus Philcoxia (Plantaginaceae) from the Brazilian Cerrado". Phytotaxa. 226 (3): 275–280. doi:10.11646/phytotaxa.226.3.8.
Scatigna, AV, Souza, VC, Pereira, CG, Sartori, MA, Simões, AO (2017). "Philcoxia rhizomatosa (Gratioleae, Plantaginaceae): A new carnivorous species from Minas Gerais, Brazil". Systematic Botany. 42 (2): 351–357. doi:10.1600/036364417x695574. S2CID91014481.
Scatigna, AV, Fritsch, PW, Souza, VC, Simões, AO (2018). "Phylogenetic Relationships and Morphological Evolution in the Carnivorous Genus Philcoxia (Plantaginaceae, Gratioleae)". Systematic Botany. 43 (4): 910–919. doi:10.1600/036364418x697814. S2CID198155882.
Pereira, CG, DP Almenara, CE Winter, PW Fritsch, H Lambers, and RS Oliveira. 2012. Underground leaves of Philcoxia trap and digest nematodes. Proc. Natl. Acad. Sci. USA, published online ahead of print. doi:10.1073/pnas.1114199109