spring twin lobed green leaves of gingko biloba tree

spring twin lobed green leaves gingko biloba tree sunbathing daylight sunshine branch ginkgo maidenhair native china traditional medicine decorative ornamental phenolic acids source proanthocyanidins flavonoid glycosides myricetin kaempferol isorhamnetin quercetin terpene trilactones ginkgolides bilobalides treatment cognitive functions dementia