leaf of ginkgo or gingko tree in autumn

leaf ginkgo gingko biloba maidenhair tree species native china autumn ginkgo gingko biloba tree extracts leaves phenolic acids proanthocyanidins flavonoid glycosides myricetin kaempferol isorhamnetin terpene trilactones ginkgolides bilobalides medicinal herbal tea nature leaf yellow background color autumn foliage bright season isolated natural green seasonal closeup fall november beautiful decoration botany