📘 This book covers the species attributed to the orders Cryptonemiales, Palmariales and Rhodymeniales. Each species description incorporates notes on ecology and distribution and is supported by one or more line illustrations. Keys to aid identification are also included. The synthesis of many years' research carried out by members of the British Phycological Society in collaboration with the Natural History Museum, London, this series of books covers all the British and the majority of northern Atlantic seaweeds.