Flowering Plants Visited
by Psithyrus ashtoni
Psithyrus ashtoni Cresson: Apidae (Bombini), Hymenoptera
(observations are from Reed, Davis, Catling, Discover Life, Pace; Bombus ashtoni is another scientific name for this species)
Asteraceae: Oligoneuron rigidum sn (Re), Solidago speciosa sn (Re); Fabaceae: Medicago sativa sn (DL); Lamiaceae: Pycnanthemum virginianum sn (Re); Orchidaceae: Cypripedium acaule exp (Dv, Pc), Spiranthes romanzoffiana sn (Ct, Pc)