It is worth noting that none of Anthropological are habit-forming, missionary opinions to the contrary notwithstanding (cited drug usage, trade, and plant domestication in Wurdak 1958; cf. Wassen 1965:20). Yanomamo can and do abstain from them for weeks and do not mention it or complain about it. Tobacco-chewing, on the other hand, is habitual: they cannot go several hours without it, and the entire village is in a state of crisis when the tobacco crop fails. In this connection the Yanomamo have discovered a number of tobacco substitutes, from both domestic and feral plant sources, to rely on when they run short of tobacco. When questioned on the possible substitutes for their hallucinogens, one informant summarized the drug-tobacco situation as follows: When we are out of tobacco we crave it intensely and we say we are hori-in utter poverty. We do not crave ebene in the same way and therefore never say that we are "in poverty" when there is none. But yakoana is everywhere, and we can always find some if we want to take ebene. We suggest that there is a fertile field here for other types of ethnobotanical investigation.