DESCRIPTIONS OF MEDICAL FUNGI

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Descriptions of Medical Fungi
Members of this genus are often isolated from the environment. It has been reported
as a rare agent of mycotic keratitis.
RG-1 organism.
Verticillium Nees ex Link
Morphological Description: Colonies are fast growing, suede-like to downy, white to
pale yellow in colour, becoming pinkish-brown, red, green or yellow with a colourless,
yellow or reddish-brown reverse. Conidiophores are usually well differentiated and
erect, verticillately branched over most of their length, bearing whorls of slender awlshaped
divergent phialides. Conidia are hyaline or brightly-coloured, mostly one-celled,
and are usually borne in slimy heads (glioconidia).
Molecular Identification: ITS, actin, EF-1α, GPDH and tryptophan synthase genes
have been used to identify all recognised Verticillium species (Inderbitzin et al. 2013).
Key Features: Hyphomycete, verticillate branched conidiophores bearing whorls of
awl-shaped, divergent phialides.
References: Domsch et al. (1980), McGinnis (1980), Rippon (1988), Samson et al.
(1995), de Hoog et al. (2000, 2015).
20 µm
Verticillium spp conidiophores, phialides and conidia.