Another possible answer for 87 is PROTEA which is a South African bush (their national flower I believe) with tea being the drink. However you must then convince yourself that produces gives pro (ie pro-duces with duce being leader). I'm not convinced. Back to the drawing board.
Thank you - another line of enquiry. I'm afraid that I am not conviced, however. Although a pot produces drinks, it isn't itself a drink (as far as I know). Also the genus is mainly trees. Finally, the answers are almost always common English names rather than scientific names. I'm still thinking.