1352 Circaea intermedia Ehrh.

This European species is probably a hybrid between C. alpina and C. lutetiana. In N. America C. canadensis Hill. occurs as a counterpart, probably the hybrid C. alpina x quadrisulcata. This C. inlermedia complex belongs to the amphi-atlantic plants (Hultén, Amphi-atl., p. 76 and map 58). Cf. also Meusel et al. 1978, map p. 301.