The alkaloids skimmianine, dubinidine, foliosidine, graveoline, and compounds (I) and (II) have been isolated from the epigeal part of the plant Haplophyllum foliosum Vved. (family Rutaceae). On the basis of the spectral characteristics of (I) and its 0-isopropylidene derivative it has been established that the compound is the alkaloid edulinine. Substance (II) was identified as ferulic acid by direct comparison with an authentic sample. This is the first time that edulinine and ferulic acid have been detected in plants of the genus Haplophyllum. © 1981 Plenum Publishing Corporation.