摘要：

The flavonoids of 2 samples of Conocephalum conicum gametophyte tissue have been studied, one from U.S.A. and the other from Germany. Common to both samples were vicenin-2, lucenin-2, the 7- O-glucuronides of apigenin, chrysoeriol and luteolin and the previously unknown 7- O-glucuronide 4′- O-rhamnosides of apigenin, chrysoeriol and luteolin. Additionally the German sample contained the 7,4′-di- O-glucuronides of apigenin and luteolin and a new compound, apigenin 7- O-diglucuronide 4′- O-glucuronide. The North American sample contained, additionally, luteolin 7,3′-di- O-glucuronide, luteolin 7- O-glucuronide 3′,4′-di- O-rhamnoside (a new triglycoside) and 2 further derivatives of luteolin 7- O-glucuronide. Evidence is presented for the existence of geographic faces of C. conicum and for the qualitative invariability of the flavonoid patterns with changing season or environment.

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