Hollyhock rust fungus in a leaf. Light micrograph of a section through a hollyhock (Alcea sp.) leaf infected with the parasitic Puccinia malvacearum r

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Hollyhock rust fungus in a leaf. Light micrograph of a section through a hollyhock (Alcea sp.) leaf infected with the parasitic Puccinia malvacearum rust, showing the teliospores (spores, brown-red). The fungal hyphae (tubes) pierce the cells with haustoria and suck out nutrients. The telia have stalks containing two-celled teliospores, and project through the ruptured epidermis (blue). Magnification: x37 when printed 10 centimetres wide.

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Size: 5125px × 3417px
Photo credit: © DR KEITH WHEELER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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