Banag, C. I., Tandang, D., Meve, U., & Liede-Schumann, S. (2015).

Two new species of Ixora (Ixoroideae, Rubiaceae) endemic to the Philippines

. Phytotaxa, 202(2), 155–160. https://doi.org/10.11646/phytotaxa.202.2.8