Colletotrichum caudatum
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Author(s): Jo Anne Crouch
Source: IMA Fungus (2014), vol. 5, p. 21
Colletotrichum caudatum (Peck ex Sacc.) Peck 1909
Colletotrichum caudatum s.l. is a fungus pathogenic to warm-season grasses that has sickle-shaped conidia with a diagnostic filiform appendage at the apex. It has been described as infecting various grass species, causing, for example, anthracnose diseases. However, a taxonomic review based on DNA sequences has shown that it represents a complex of several closely related species, with C. caudatum s.s. only found on Indiangrass, Sorghastrum nutans, a grass growing in central and eastern North America. The closely related Colletotrichum species with the same morphological concept have been described to infect other grasses like Andropogon and Zoysia, but also Sorghastrum (Crouch , 2014).
The setae are around 100 µm long and dark brown or black. The conidia are unicellular, hyaline and smooth walled, around 30-50 µm long, including the 7-15 µm long, apical appendage.
