Sotoodeh, A., Attar, F. & Civeyrel, L. Kew Bull (2017) 72: 24. doi:10.1007/s12225-017-9696-3
Abstract: Verbascum aspinum is introduced as a new synonym of V. stachydiforme. V. songaricum subsp. subdecurrens (Scrophulariaceae) is reported for the first time from North and Northwest Iran. Distribution maps are provided for Iran.