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.
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.
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.