From representatives of the section Rigidi besides already known compounds four new benzofurans (3,s. 6, and 10) as well as six new furanoeremophilanes (13, 15,19-21, and 23) are isolated. From Senecio pterophorus a new type of a pyrrolizidinc derivative (25) is isolated. Senecio cissumpelinus contains similar compounds (34 - 37). The structures are elucidated by spectroscopic methods as well as by some chemical reactions. The chemotaxonomical aspects are discussed.