Piwowarczyk, R., Pedraja, Óscar S., Moral, G.M., Góralski, G., Kwolek, D., Denysenko-Bennett, M. & Pawełek, B. (2018)

Orobanche arpica (Orobanchaceae): a new species from the Caucasus, and contributional notes on O. ser. Krylowianae

. Phytotaxa 361 (1): 65–76. https://doi.org/10.11646/phytotaxa.361.1.5