Chemotaxonomic features in argentinian species of Flaveria.

ALICIA MARIEL AGNESE ; SUSANA NUN8 EZ MONTOYA; LUIS ARIZA ESPINAR; JOSE LUIS CABRERA

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 1999 vol. 27 p. 739 - 739

he presence of thiophene derivatives in Flaveria bidentis and Flaveria bidentis var. angustifoliahas been investigated to expand on the existing chemical information on both taxa.Alpha-terthienyl and 5- (3-buten-1-ynyl)- 2,2@-bithienyl were found in the roots and aerial partsof F. bidentis, whereas in F. bidentis var. angustifolia a-terthienyl was found only in the roots.These results, in conjunction with the di!erent patterns of sulphated #avonoids present in eachone of these entities, reinforce the di!erentiation, based on exomorphological features, ofArgentinian Flaveria into two species: F. bidentis and F. haumanii (formerly F. bidentis var.angustifolia)