I'd be very interested to know what the other reviewers actually use this book for. As a field guide it lacks essential information about habitat, botanical description, distribution etc'. As a herb guide it says almost nothing about, doseage, contra-indications, key constituents etc'. For example it is irresponsible to refer to Juniper for treating cystitis without mentioning that it is specifically contra-indicated in kidney disease and should never be used during pregnancy. The geographic spread and climatic range of the book also make it impossible to use. If you live in a temperate zone, you don't want to wade though pages and pages of irrelevant information on tropical trees before you get to Witch Hazel or Oak. Essentially, there is no coding by flower colour, which means you have to wade through the whole book to identify anything. Utterly, totally useless! If you want a proper field guide buy something like 'Wild Flowers of Britain and Europe' Aichele and Schwegler' which does everything this book doesn't. If you are looking for a medical herb guide try 'The New Holistic Herbal' by David Hoffman.