Polylectic: visiting a wide range of plants, but with a preference for Fabaceae (Amiet et al., 2004).
Westrich (1989) lists the following pollen sources in Germany: Sedum reflexum (Crassulaceae); Lotus corniculatus, Melilotus alba, Trifolium repens, Medicago sativa, Ononis spinosa (Fabaceae); Reseda lutea, Reseda luteola (Resedaceae).
Mueller (1996) states that this is a polylectic species, with a strong preference for Papilionoideae (Fabaceae) pollen. Pollen analysis (Muller, 1996) revealed the following pollen sources: Fabaceae, with smaller amounts of Brassicaceae, Resedaceae, Crassulaceae, Cistaceae, Lamiaceae, Scrophulariaceae, Campanulaceae, Asteraceae. Muller cites Lotus corniculatus (Fabaceae) as a pollen source in Switzerland.
Stanisavljević (2000), copying Banaszak & Romasenko (1998) lists the following plants as forage sources: Lotus corniculatus, Trifolium, Dorycnium (Fabaceae); Thymus (Lamiaceae); Centaurea and Cirsium (Asteraceae).
Rust et al (2004) cite Lotus corniculatus (Fabaceae) as pollen forage source.