Botany
The Orkneys and Shetland (Tudor) contains a list of the rarer British plants found in Orkney, compiled by W. I. Fortescue.
Volume xviii. of the Transactions of the Botanical Society of Edinburgh contains a complete list of Orkney plants by Prof. J. W. H. Traill. Another list is in preparation by Mr. Magnus Spence.
The Marine Algæ of the Orkney Islands, by G. W. Traill (Edinburgh, 1890), contains a list of the seaweeds of Orkney.
The following are some general works on botany which may be of service to the beginner:—Open-air Studies in Botany, by R. L. Praeger (London, 1897), a study of wild flowers in their homes, with illustrations; Flowering Plants, their Structure and Habitat, by C. L. Laurie, illustrated (London, 1903); Nature Studies, by G. F. Scott-Elliot (London, 1903); A Plant Book for Schools, by O. V. Darbyshire, illustrated (London, 1908); Flowers of the Field, by C. A. Johns (London, 1894).
Common Objects of the Seashore, by the Rev. J. G. Wood (London, 1866), contains good descriptions and illustrations of the seaweeds.
For identification of plants perhaps the best books are the British Flora, by Bentham and Hooker (London, 1904), and Illustrations to Bentham and Hooker’s British Flora, by Fitch and Smith (London, 1905).
For mosses, the best book is Dixon and Jameson’s Student’s Handbook of British Mosses.