Telekia speciosa

Inula helenium [oil of elecampane], I. spp., Liatris cylindrica, Telekia speciosa (Asteraceae)... 

More recently " the naturally occurring cyclopropenones 9 and 11 have been isolated from Telekia speciosa. The terpene derivative with the 7a-H, compound 9, is also found in Lychnophora passerina together with an isomer tentatively assigned as the Ip-H epimer 10 and not the eudesmane derivative 11 as initially thought. 

Buphthalmum speciosum Schreb. (Telekia speciosa Baum.) (Compo-sitae)... 

Telekin from the roots of Telekia speciosa, helenin from the roots of Inula helenium L., and sesquiterpene alcohol ledol from the aerial parts of Ledum palustre L. show cytotoxicity [41]. Bisabolol, a nontoxic sesquiterpene alcohol, was isolated from Matricaria chamomilla, Carthamus lanatus, and Matricaria recutita and exhibits a cytotoxic apoptosis-inducing effect [42] against human glioblastoma and pancreatic carcinoma cell lines. 

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