David Watts was Professor of Geography at the University of Hull. Abdulalif H. AI-Nafie is Professor of Geography at the Islamic University of Imam Muhammad Ibn Saud, in Riyadh.

• Chapter 1 Prelude; Chapter 2 The Environment; Chapter 3 Palaeoenvironments, Vegetation History, the Development of the Sand Seas, and Biogeographic Affinities; Chapter 4 Flora of the Sand Seas of Saudi Arabia; Chapter 5 Plant Communities of the Sand Seas; Chapter 6 Human Uses of the Sand Seas and Their Vegetation; Conclusions; Plates; Figures; Tables;

David Watts was Professor of Geography at the University of Hull. Abdulalif H. AI-Nafie is Professor of Geography at the Islamic University of Imam Muhammad Ibn Saud, in Riyadh.

• Chapter 1 Prelude; Chapter 2 The Environment; Chapter 3 Palaeoenvironments, Vegetation History, the Development of the Sand Seas, and Biogeographic Affinities; Chapter 4 Flora of the Sand Seas of Saudi Arabia; Chapter 5 Plant Communities of the Sand Seas; Chapter 6 Human Uses of the Sand Seas and Their Vegetation; Conclusions; Plates; Figures; Tables;

David Watts was Professor of Geography at the University of Hull. Abdulalif H. AI-Nafie is Professor of Geography at the Islamic University of Imam Muhammad Ibn Saud, in Riyadh.

• Chapter 1 Prelude; Chapter 2 The Environment; Chapter 3 Palaeoenvironments, Vegetation History, the Development of the Sand Seas, and Biogeographic Affinities; Chapter 4 Flora of the Sand Seas of Saudi Arabia; Chapter 5 Plant Communities of the Sand Seas; Chapter 6 Human Uses of the Sand Seas and Their Vegetation; Conclusions; Plates; Figures; Tables;