It took her 80 hours a week for 21 months to prepare the book: "It takes about 35 hours to draw the fungi for a double spread of pages," (Sarah) Simblet explains, ruefully. Just getting the source material from which to work seems taxing enough: "We would scour Covent Garden flower market at 3am, or take algae deliveries from Cornwall of a bucket of 10 seaweeds." The result is an outstandingly detailed, authoritative and delightful work.

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