Big Trefoil (Lotus pedunculatus Cav.)

Also classified as Lotus uliginosus Schkuhr.

BONAP uses the name Lotus uliginosus Schkuhr. (1796) in spite of it being newer than Lotus pedunculatus Cav. (1793), for unknown reasons. Many older sources use the name ulignosus, but in this case BONAP has gone out of their way to use a different name than USDA PLANTS originally used. At any rate, all sources we cite seem to refer to this taxon consistently, at least for North America. Sources that use the term Lotus uliginosus may exclude the subspecies Lotus pedunculatus subsp. granadensis, instead separating it as Lotus granadensis Chrtková, but that taxon is only found in Morocco and Spain and does not occur in North America.