Glomerella graminicola

Glomerella graminicola (anamorph Colletotrichum graminicola) is a fungus which causes anthracnose on cereals and grasses.

Identification
Stromata
 * 70-300 μm in diameter
 * Bear prominent, dark, septate spines (setae) up to 100 μm long.

Condia
 * Developing at the base of the spines
 * Hyaline to pale yellow, unicellular, sickle-shaped, falcate to fusiform, tapered toward both ends
 * 3-5 x 19-29 μm.

Phialides
 * Unicellular, hylanine and cylindrical,
 * 4-8 x 8-20 μm.

Growth on PDA
 * Gray and feltlike
 * Conida and appressoria are numerous when culture are well aerated, and sclerotia sometimes occur.
 * Appressoria are diagnostic: they are tawny brown, irregular-shaped in edge, prominent, and terminal on thickened hyphae.