FIG. 76. Epichloe typhina, a common parasite on 

 various grasses, i, stroma of fungus encircling a leaf-, 

 sheath of Holcus mollis, a common meadow grass ; 2, 

 stroma of the fungus encircling the leaf-sheath of Holcus 

 lanata ; 3, a portion of the stroma of the fungus showing 

 the warted surface : the warts correspond to the mouths of 

 the perithecia, which are sunk in the stroma ; 4, section 

 of a perithecium sunk in the substance of the fleshy 

 stroma ; 5, an ascus showing the spores escaping from 

 its apex; 6, a single filiform or needle-shaped, many- 

 septate spore ; 7, conidiophores bearing conidia. Figs, 

 i and 2, slightly reduced ; remainder mag. 



