Flowering Plants Visited
by Andrena
robertsonii
Andrena robertsonii Dalla Torre: Andrenidae (Andreninae), Hymenoptera
(observations are from Robertson, Graenicher, Wilhelm & Rericha, and Discover Life)
Anacardiaceae: Rhus glabra [stam sn cp fq] [pist sn fq] (Rb), Toxicodendron radicans (WR); Apiaceae: Cryptotaenia canadensis sn cp (Rb), Pastinaca sativa sn (Rb), Sanicula odorata (WR), Taenidia integerrima (Rb); Asteraceae: Erigeron annuus (Gr), Erigeron philadelphicus (Gr), Parthenium integrifolium (WR); Caprifoliaceae: Viburnum dentatum sn cp fq (Rb); Fabaceae: Lotus corniculatus (DL); Rosaceae: Aruncus dioicus [stam sn] (Rb); Rutaceae: Ptelea trifoliata sn cp fq (Rb)