Figure 350.—Fomes fraxinophilus.
Fraxinophilus means ash-loving; rather common in this country, but does not grow in Europe.
The pileus is between corky and woody, smooth, somewhat flattened, at first zoneless; white when young, then reddish-brown, white around the margin; at first even, then concentrically sulcate, pale within.
The tubes are short, pores minute, rusty-red but covered from the first with a white pubescence and continuous with the margin; the spores nearly round, 6–7µ.
The specimens in Figure 350 were found in Haynes' Hollow on a living ash, growing at intervals of five or six feet, one above another, to a height of thirty feet.
Trametes. Fr.
In case of the genus Trametes the hymenophorum descends into the trama of the pores without any change, and is permanently concrete with the pileus. The pores are entire. There are, however, a few of the Polypori which are quite thin that have the trama of the same structure with the hymenophorum. These have been separated by Fries and have been called Polystictus. They are distinguished by the fact that the pores develop from the center out and are perpendicular to the fibrillose stratum above the hymenophorum while in the genus Trametes the hymenophorum is not distant from the rest of the pileus.