protium heptaphyllum: tropical American tree
incense tree: any of various tropical trees of the family Burseraceae yielding fragrant gums or resins that are burned as incense
bayes' postulate: (statistics) the difficulty of applying Bayes' theorem is that the probabilities of the different causes are seldom known, in which case it may be postulated that they are all equal (sometimes known as postulating the equidistribution of ignorance)