On seed-bed, the germination percentage of the hibrid F2 between Hinoki and Sawara was below 0.301% and this Percentage is extremly smaller. Therefore its growth followed germination was generally bad being smaller than that of parent seedlings. As the results of examination and observation of leaves and roots which are the dentifying aspect of seedings of these two species of tree, we fonnd that the number of seedIings was only 5 and all seedlings expressed the quality of Sawara and, in their external appearance, no quality separated was observed.