|Juunikiransou, or Ajuga x
mixta, is an interspecific hybrid between Ajuga nipponensis
and Ajuga decumbens; as is the case for this, hybridization
with another species within the same genus reportedly can occur
relatively frequently in various places. This hybrid species looks
like Ajuga makinoi in shape and color, but a significant
difference lies in the form of their perianth's upper lip. With
A. makinoi, it sharply cut in, but with A. x mixta, not.