British botanist, lichenologist and mycologist (1781–1862).
William Borrer (Henfield, Sussex, 13 June 1781 – 10 January 1862) was an English botanist noted for his extensive and accurate knowledge of the plants of the British Islands. He travelled extensively around Britain to see and collect plants and lichens, and also once crossed the English Channel to visit Normandy. He was accompanied on some of his travels by William Jackson Hooker and by Charles Cardale Babington. Borrer was particularly interested in lichens, willows, roses and succulents although had a very broad knowledge of plants. He was particularly good at recording plant identificatio