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AspergillusAn SEM image of aspergillus in spore production (x 815 on a standard 9 cm wide print). The moulds are common in the northern hemisphere and some cause disease in humans and animals
Lobaria pulmonaria, lichenA cut-out of a lichen specimen held in the crypt herbarium at the Natural History Museum, London
Cetraria islandica, lichenA cut-out of a branching lichen specimen held in the crypt herbarium at the Natural History Museum, London
Usnea inflata, beard lichenAnd Hypogymnia physodes (right), Burnham Beeches, Bucks, W. London. The former is a recent colonist following reductions in SO2 pollution
Cladonia sulphuratum, lichenCut-outs of lichen specimens held in the crypt herbarium at the Natural History Museum, London
Sticta sp. lichenA cut-out of a lichen specimen held in the crypt herbarium at the Natural History Museum, London
Nephroma sp. lichenA cut-out of a lichen specimen held in the crypt herbarium at the Natural History Museum, London
Teloschistes chrysopthalmus, lichenLichen shown in its herbarium packet from the collections of the Natural History Museum, London. Some lichens look virtually the same as dried specimens as in the field
Xanthoria parietina, lichenShown here is a maritime sunburst lichen. A photograph of the ascus containing eight ascopores