"In this lucid and innovative book, Mike Sheridan traces the remarkable global histories and cultural meanings of two powerfully charged boundary-marking plants – dracaena and cordyline – through five case studies of indigenous societies in Tanzania, Cameroon, New Guinea, French Polynesia, and the Caribbean. In critical dialogue with posthumanist approaches, his multi-sited ethnography of human-plant relations sets a model for political ecology. In the tradition of Eric Wolf, he masterfully combines history, culture, and power!"Alf Hornborg, Professor of Human Ecology, Lund University "In Roots of Power, it is fascinating to see tropical boundary plants being used to ‘beat the bounds’ of social science theorizing in so many directions. The author follows two sets of cultivars whose uncannily repetitive evocations offer a sense of definition in an entangled field!"Marilyn Strathern, Emeritus Professor of Social Anthropology, University of Cambridge"This brilliantly integrative ethnography explores the living boundaries of properties, and the properties people imbue in boundary plants themselves. Sheridan shows what else these mean in people’s lives – material, social, and spiritual. Roots of Power marks a conjunction in the field of anthropology itself, conjoining deep work with far-reaching comparative study!"Parker Shipton, Professor of Anthropology, Boston University"Michael Sheridan’s Roots of Power: The Political Ecology of Boundary Plants tells five stories of plants, people, property, peace, and protection. With assured prose and impressive scholarship Sheridan shows how two humble plants, used traditionally throughout the global tropics to set property boundaries, are also conduits for social harmony, resistance against oppression, and spiritual journeys. This is an important book, not only for the professional scholar, but also for those interested in the majesty of small things that so profoundly influence the gamut of human life, from the comity of neighbors to the deepest entanglements of social and political power!"Judith Carney, Distinguished Research Professor, Geography, UCLA"Historically, plants have been used as boundary markers in different communities around the world. Through the lens of dracaena and cordyline plants, Michael Sheridan delivers the first global comparative study of plants as social, political, and cultural boundary markers. A theoretical tour de force, this book demonstrates the power of anthropology to understand socio-cultural phenomena over time and space. Based on multi-sited ethnography in five countries, Sheridan analyses processes of socioecological change involving property relations, group identities, land use, and domains of meaning. This book is a new and refreshingly productive approach to the expanding field of political ecology, and to the discourse on property rights everywhere!"N. Thomas Håkansson, Professor Emeritus, Swedish University of Agricultural Sciences; Adjunct Full Professor of Anthropology, University of Kentucky"The book delivers on its ambitious framing by effectively combining ethnographic methods with political ecology frameworks across five case studies. Sheridan shows that the two boundary plants in question, Dracaena fragrans and Cordyline fruticosa, serve ‘polymarcating’ roles. They organize land but also evoke ideas about identity, community, belonging, and social order... The introduction, second chapter, and conclusion directly address a range of concepts from anthropology, history, cultural studies, development economics, and more. Sheridan draws useful insights from classic anthropology as well as the New Institutional Economics, Actor-Network Theory, and the Evolutionary Theory of Land Rights. Sheridan’s critique of post-humanist scholarly approaches is especially valuable"Jonathan E. Robins,The Journal of Pacific History (17 Oct 2024)"An ambitious multi-sited project, Roots of Power does well to interpret through the lens of poststructuralist political ecology in order to understand how communities… engage with, value, and make meaning of Dracaena and Cordyline… [Sheridan] prompts scholars and policymakers to continue to imagine other futures of governance—ones that take plants seriously."Kathleen Cruz Gutierrez, The Journal of Society & Natural Resources (23 May 2025)"Michael Sheridan’s Roots of Power: The Political Ecology of Boundary Plants examines the concept of a boundary plant across five case-studies...By drawing together the common thread—the agency of plants in human lives—Sheridan is able to foreground the complexities of engaging with other-than-human beings...the multi-sited ethnography, in conjunction with historical data and an exploration of power, demonstrates a model of meaning-making which sits at the intersection of anthropology, ecology, and history."Jayaditya Vittal, Ethnobiology Letters (2 Dec 2025)
