'' ▁ ▁External ▁links ▁The ▁Back - bre aking ▁Le af , ▁a ▁ 1 9 5 9 ▁document ary ▁on ▁to b acco ▁har vest ing ▁ ▁Category : T ob acco <0x0A> </s> ▁Tax od one ▁is ▁a ▁naturally ▁occurr ing ▁d iter pen oid ▁found ▁in ▁Tax od ium ▁dist ich um ▁( B ald ▁Cy press ), ▁Ros mar inus ▁offic inal is ▁( R os em ary ), ▁several ▁Sal via ▁species ▁and ▁other ▁plants , ▁along ▁with ▁its ▁ox id ized ▁re arr ang ement ▁product , ▁tax od ione . ▁Tax od one ▁and ▁tax od ione ▁exhib it ▁ant ican cer , ▁ant ib acter ial , ▁ant io x id ant , ▁ant if ung al , ▁insect ic ide , ▁and ▁ant ife ed ant ▁activities . ▁ ▁Disc overy ▁Tax od one ▁was ▁first ▁isolated ▁in ▁ 1 9 6 8 ▁from ▁the ▁se eds ▁of ▁Tax od ium ▁dist ich um ▁( B ald ▁Cy press ) ▁by ▁S . ▁Morris ▁K up chan ▁and ▁cow ork ers . ▁They ▁reported ▁the ▁structure ▁determ ination ▁and ▁basic ▁chem istry ▁of ▁tax od one ▁and ▁its ▁ox id ized ▁re arr ang ement ▁product , ▁tax od ione . ▁Tax od one ▁occurs ▁naturally ▁in ▁the ▁form ▁of ▁(+ )- tax od one . ▁ ▁Occ urrence ▁Tax od one ▁and / or ▁tax od ione ▁have ▁been ▁identified ▁in ▁several ▁plants ▁besides ▁Tax od ium ▁dist ich um ▁including : ▁Ros