Ranjbar, M., Amirabadizadeh, H., Karamian, R. & Ghahremani, M. A.: Notes on Onobrychis sect. Heliobrychis (Fabaceae) in Iran. — Willdenowia 34: 187–190. — ISSN 0511-9618; © 2004 BGBM Berlin-Dahlem.
Onobrychis aurea, confined to W Iran (Prov. Azarbayjan) and known from only two localities, is described as a species new to science and illustrated. O. heterophylla is reported for the first time from Iran.