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The flavonoids, both external aglycones and vacuolar flavonoid glycosides, have been identified in the aerial parts of endemic North African Sideritis species. The flavonoids produced by these African species are very similar to those produced by Spanish species, being mainly 7-allosylglucosides of 8-hydroxyflavones. Two new flavonoid glycosides, apigenin and luteolin 7-allosylglucosides, have been identified in these plants. Species of the section Sideritis are characterized by the accumulation of the 7-glycosides of 8-hydroxyflavones (isoscutellarein, hypolaetin and their methyl ethers) whereas those of section Hesiodia accumulate 7-glycosides of the common flavones (apigenin, luteolin and chrysoeriol).

Seeds of 100 species from fifty genera of the Umbelliferae were surveyed for the psychotropic aromatic ether myristicin. It was found for the first time in the tribe Caucalideae, in Daucus glochidiatus, Pseudorlaya pumila and P. minuscula. Its presence in the tribes Peucedaneae (three genera) and Apieae (eight genera) was confirmed. Variation within species was noted in that it occurred in seed of both the cultivated parsnip Pastinaca sativa and the cultivated fennel (Foeniculum vulgare) but was absent from wild collections of these species. The only genus where it occurred regularly was Oenanthe (in all of five species examined). It could not be detected in any other of the Umbelliferae tribes nor in the related family, Araliaceae, and thus appears to be rare as a seed constituent.