Bidens torta
 Bidens torta the corkscrew beggartick is a plant species.Methylated okanin derivatives can be isolated from Bidens torta. Those include okanin 343′4′-tetramethyl ether okanin 343′-trimethyl ether 4′-glucoside okanin 4-methyl ether 4′-glucoside and okanin 4-methyl ether 4′-glucoside monoacetate. Okanin 34-dimethyl ether 4′-glucoside can also be isolated.