Although at the temperatures achievable in any practical device only cross-section below 500keV incident energy is important. In particular for p-B11 it is the small resonance spike at 148keV that helps boost the overall reaction rate in the 10-100keV temperature range.
If you take these cross-section vs incident energy curves and average over a Maxwellian velocity distribution you get the more meaningful reaction-rate vs temperature graph.
Here is one from Wesson’s Tokamaks book which shows pB11 in comparison to DT DD etc, but doesn’t show all the Lithium reactions
