157 Paris quadrifolia L.

This species is widely distributed in Earasia. Further, two closely related species are tentatively mapped, viz. P. hexaphylla Cham. (syn.: P. verticillata Bieb.) in E. Asia and P. tetraphylla A. Gray in Japan. However, the distribution pattern is uncertain in the East. Cf. also Meusel et al. 1965, map p. 100.