Professor Olwen Grace views a lichen sample from Royal Botanic Garden Edinburgh's collection as part of the DiSSCo UK project. Image copyright Julie Howden

Professor Olwen Grace views a lichen sample from Royal Botanic Garden Edinburgh's collection as part of the DiSSCo UK project. Image copyright Julie Howden.JPG
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Professor Olwen Grace views a lichen sample from Royal Botanic Garden Edinburgh's collection as part of the DiSSCo UK project. Image copyright Julie Howden