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