Pithomyces sp.

Colonies are fast growing, dark grey to black, suede-like to downy and produce darkly pigmented, multicellular conidia (phragmo- or dictyoconidia) formed on small peg-like branches of the vegetative hyphae. Conidia are broadly elliptical, pyriform, oblong, and commonly echinulate or verrucose.  RG-1 organism.

Conidiophores and conidia of Pithomyces chartarum.

Clinical significance:

The genus Pithomyces contains 15 species commonly found on litter and soil, however, one species, Pithomyces chartarum is often involved with facial eczema of sheep.

Mycosis: Dermatomycosis

Further reading:

Domsch, K.H., W. Gams, and T.H. Anderson. 1980. Compendium of soil fungi. Volume 1. Academic Press, London, UK.

Rippon, J.W. 1988. Medical Mycology. 3rd Edition. W.B. Saunders Co., Philadelphia, USA.