Notes For Reference:-

Ajuga x mixta / Juunikiransou ジュウニキランソウ

Juunikiransou, or Ajuga x mixta, is an interspecific hybrid between Ajuga nipponensis and Ajuga decumbens. As is the case with other species within the same genus, hybridization with another species occurs relatively frequently in various locations. This hybrid species looks like Ajuga makinoi in shape and color, but a significant difference lies in the upper lip of its perianth. With A. makinoi, it sharply cuts in, but in A. x mixta, it does not. Bloom time: April-May.