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Unknown 25 = Acrophialophora fusispora
Culture: Colonies (SDA) fast growing, greyish-brown with a black reverse.
![Culture](/mycology/sites/default/files/styles/ua_image_landscape/public/media/images/2021-09/unk25-1.jpg)
Microscopy: Conidiophores arising singly, terminally and laterally from the hyphae, erect, straight or slightly flexuose, tapering towards the apex, pale brown, rough walled, with whorls of phialides on the upper part.
![Microscopy](/mycology/sites/default/files/styles/ua_image_landscape/public/media/images/2021-09/unk25-2.jpg)
Phialides flask shaped with a long and narrow neck, hyaline, smooth walled or echinulate.
![Microscopy](/mycology/sites/default/files/styles/ua_image_landscape/public/media/images/2021-09/unk25-3.jpg)
Conidia in long chains, limoniform, one-celled, pale brown, finely echinulate with distinct spiral bands.
![Microscopy](/mycology/sites/default/files/styles/ua_image_landscape/public/media/images/2021-09/unk25-4.jpg)
Key Features: Hyphomycete with flask shaped phialides producing long chains of one-celled, limoniform, pale brown conidia, with distinct spiral bands. Temperature: optimum 40C; maximum 50C.
Comment: The genus Acrophialophora contains 3 species and is most commonly associated with soil, especially from India. A. fusispora is a rare human pathogen. BSL-1 organism.
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