Paecilomyces lilacinus

Colonies are fast growing, suede-like to floccose, vinaceous to violet-coloured. Conidiophores are erect 400-600 µm in length, bearing branches with densely clustered phialides. Conidiophore stipes are 3-4 µm wide, yellow to purple and rough-walled. Phialides are swollen at their bases, gradually tapering into a slender neck. Conidia are ellipsoidal to fusiform, smooth-walled to slightly roughened, hyaline to purple in mass, 2.5-3.0 x 2-2.2 µm, and are produced in divergent chains. Chlamydospores are absent. Growth at 38C. RG-1 organism.

 
Conidiophores, phialides and conidia of Paecilomyces lilacinus.
Note: rough-walled conidiophore.

Key Features: colony pigmentation, phialides with swollen bases, and pigmented and rough-walled conidiophore stipes, absence of chlamydospores.

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