Paecilomyces variotii

Colonies are fast growing, powdery to suede-like, funiculose or tufted, and yellow-brown or sand-coloured. Conidiophores bearing dense, verticillately arranged branches bearing phialides. Phialides are cylindrical or ellipsoidal, tapering abruptly into a rather long and cylindrical neck. Conidia are subspherical, ellipsoidal to fusiform, hyaline to yellow, smooth-walled, 3-5 x 2-4 µm and are produced in long divergent chains. Chlamydospores are usually present, singly or in short chains, brown, subspherical to pyriform, 4-8 µm in diameter, thick-walled to slightly verrucose. RG-2 organism.

Conidiophores, phialides, conidia and terminal chlamydospores of P. variotii.

Key Features: yellow-brown colony pigmentation, cylindrical phialides, and presence of chlamydospores.

MIC data is limited.  Antifungal susceptibility testing of individual strains is recommended.