Pseudopithomyces chartarum

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Pseudopithomyces_chartarum (= Leptosphaerulina chartarum) colonies (top), hyphae and spores (bottom) (click on image to enlarge it)
Authors: Qiong Wu, Yaqian Li, Yingying Li, Shigang Gao, Meng Wang, Tailong Zhang and Jie Chen
Source: PLoS ONE 2013, 8(9), art. e73729

Pseudopithomyces chartarum (Berk. & M.A. Curtis) J.F. Li, Ariyawansa & K.D. Hyde 2015

This fungus is widely distributed and is considered to be primarily a saprophytic species. However, it can also cause diseases on a variety of crops like leaf spots, necrotic lesions, chlorosis and other symptoms (e.g. black points on grains). Among others, cereals and grasses are often infected.

The conidia are dark brown, multicellular and egg-shaped to pyriform, approximately 20-35 x 10-20 µm large, and with transverse as well as longitudinal septa. Ascospores are elongated, usually with 3-4 transverse septa.

Synonyms:
Leptosphaerulina chartarum
Pithomyces chartarum