Atlas of North European vascular plants
Hultén & Fries 1986
1711 Orobanche minor Sm.
This species grows mostly on Trifolium spp. Originating mainly from W., S.C. and S. Europe and N. Africa it has spread northwards and to W., C. and E. Africa, N. America and New Zealand. Cf. also Meusel et al. 1978, map p. 413.