Most of the contributions in this volume were presented at the seventh International Workshop on African Archaeobotany (IWAA), held in Vienna, 2-5 July 2012. They address past interrelationships between people and plants as evident in the rich archaeobotanical, ethnographic, and linguistic record of Africa. Since its inception two decades ago, IWAA has developed into a tightly knit community of scholars from all continents who share a profound interest in African ways of plant exploitation, trade networks, questions of origin, domestication and subsequent dispersal of African crops, as well as the introduction of crops of Asian and American origin.