  The results on transverse mass spectra of Lambda hyperons produced in all
inelastic p+p and p+pbar interactions in the energy range sqrts = 3.6-1800 GeV
are compiled and analyzed. The energy dependence of the mean transverse mass
and the inverse slope parameter of the spectra is presented and discussed.
These results should be used as a reference in the study of Lambda hyperon
production in nuclear collisions.
