Denoting dark conidia and/or hyphae, usually brown or black; used frequently to denote dark-colored fungi.
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de·mat·i·a·ceous (de-mat″e-aґshəs) 1. dark brown to black in color; said of fungi. The color usually comes from pigment in the cell wall or other parts. 2. of or pertaining to a fungus of the family Dematiaceae.
Bipolaris sp., a dematiaceous fungus, darkly pigmented by melanin in the cell walls.
Medical dictionary. 2011.