Experimental evidences suggest that the bases contained in Thalictrum thunbergii DC. (Japanese name “Akikaramatsu”) differs slightly by its habitat. In order to elucidate this point, the root of this plant collected in Nagano Prefecture was processed and a comparatively large amount of magnoflorine (I) was obtained, while its leaves and stems yielded takatonine (II). The leaves and stems of the same plant collected in Kochi Prefecture yielded magnoflorine (I) and berberine (III). These results are summarized in Table I.