DESCRIPTIONS OF MEDICAL FUNGI

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Descriptions of Medical Fungi
Conidiobolus coronatus (Costantin) Batko
a
10 μm
b
10 μm
Conidiobolus coronatus (a) spherical conidium with hair-like
appendages (villae) and (b) conidia with prominent papillae.
Coniochaeta hoffmannii (J.F.H. Beyma) Z.U. Khan, Gené & Guarro
Synonymy: Lecythophora hoffmannii (J.F.H. Beyma) W. Gams & McGinnis.
Phialophora hoffmannii (J.F.H. Beyma) Schol-Schwarz.
In response to recent changes in the nomenclature for pleomorphic fungi, Khan
et al. (2013) transferred all Lecythophora species to Coniochaeta. The genus
Coniochaeta is morphologically similar to Phialemonium. It also forms adelophialides,
but in Coniochaeta, these conidiogenous cells show conspicuous collarettes, and the
colonies are usually pink-salmon to dark brown, although discrete phialides like those of
Acremonium may also be present (Perdomo et al. 2011b). Coniochaeta hoffmannii has
been associated with cases of subcutaneous infections, keratitis, sinusitis, peritonitis,
and canine osteomyelitis. Coniochaeta mutabilis has been described to be a causative
agent of human peritonitis, endocarditis, endophthalmitis, and keratitis (Perdomo et al.
2011b).
RG-1 organism.
Morphological Description: Colonies are flat, smooth, moist, pink to orange, with
regular and sharp margin; reverse pink. Hyphae are narrow, hyaline, producing conidia
laterally from small collarettes directly on the hyphae, or from lateral cells which are
sometimes arranged in dense groups; lateral cells flask-shaped or nearly cylindrical.
Collarettes are unpigmented, about 1.5 µm wide. Conidia are hyaline, smooth and thinwalled,
broadly ellipsoidal to cylindrical or allantoid, 3.0-3.5 x 1.5-2.5 µm, produced in
slimy heads.