R. orientalis, a shrub 1-1.5 m high, with white or pale pink flowers, solitary or in clusters of 2-5 flowers, each 24-50 mm in diameter; habitat: Kermānšāhān, Kurdistan, Lorestān, Baḵtiāri, Hamadān, Arāk, Qazvin, Tehran; also reported from Iraqi Kurdistan, Armenia, Anatolia, etc. (Zieliński, p. 18; Ḵātamsāz, pp. 52-54).

http://www.iranicaonline.org/articles/gol