Bidens torta

Bidens torta, the corkscrew beggarticks, is a flowering plant species in the sunflower family.
"Bidens torta" is endemic to Hawaii.
Chemical derivatives.
Methylated okanin derivatives can be isolated from "Bidens torta".
Those include okanin 3,4,3′,4′-tetramethyl ether, okanin 3,4,3′-trimethyl ether 4′-glucoside, okanin 4-methyl ether 4′-glucoside and okanin 4-methyl ether 4′-glucoside monoacetate.
Okanin 3,4-dimethyl ether 4′-glucoside can also be isolated.