Considered to be polylectic, but in the British Isles the pollen sources are not published.
Polylectic: in Germany, foraging for pollen from: Daucus carota, Anthriscus sylvestris, Heracleum sphondylium (Apiaceae); Bellis perennis, Achillea millefolium, Cirsium vulgare, Centaurea jacea, Centaurea paniculata, Cichorium intybus, Taraxacum officinale, Leontodon autumnalis, Hieracium sp., Hypochoeris radicata, Scorzonera humilis (Asteraceae); Campanula rotundifolia (Campanulaceae); Stellaria holostea (Caryophyllaceae); Knautia arvensis, Scabiosa columbaria (Dipsacaceae); Plantago media (Plantaginaceae); Ranunculus acris (Ranunculaceae) and Prunus spinosa and Potentilla fruticosa (Rosaceae) (Westrich, 1989).
Ebmer (1971) (citing various sources) lists: various Apiaceae; Achillea, Solidago, Leontodon, Taraxacum, Tussilago, Centaurea (Asteraceae); Ranunculus (Ranunculaceae); Campanula (Campanulaceae); Ajuga (Lamiaceae); Scabiosa (Dipsacaceae); Calluna (Ericaceae).
Pawlikowski & Kruszynski (1997) list Centaurea rhenana and Hieracium pilosella (Asteraceae) as forage sources in Poland. Bossert (2014) reports foraging at Leontodon sp. (Asteraceae) in the Austrian Tyrol
Knuth (1906) citing himself and others, reports visitation to Adonis vernalis (Ranunculaceae).