Abstract
Abstract A survey of the leaves and flowers of 62 representatives of the tribe Loteae (Leguminosae) showed the presence of several classes of flavonoids: flavonol 7-methyl ethers (rhamnocitrin, rhamnetin), 8- O -substituted flavonols (gossypetin, limocitrin, sexangularetin, corniculatusin), 3′,4′,5′-tri- O -substituted flavonols (myricetin, mearnsetin, syringetin, laricitrin), proanthocyanidins and flavone- C -glycosides. The trisubstitution of the B-ring and the 8- O -substitution of the A-ring allow the definition of a major group including the genera Dorycnium, Bonjeania, Lotus and Tetragonolobus . The presence of proanthocyanidins and 7- O -methylation determine a second group consisting of the genus Anthyllis . Finally, Securigera , on the basis of its flavonoid chemistry, appears to be rather remote from other members of the tribe.
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