of Daedalea are very much the same as Trametes, but they are
inodorous. Care should be taken not to confound them with the species of
Polyporus that have elongated curved pores.

_Daedalea ambigua. Berk._

[Illustration: Figure 355.--Daedalea ambigua. One-third natural size,
showing upper surface.]

[Illustration: Figure 356.--Daedalea ambigua. One-third natural size,
showing the pore surface.]

The pileus is white, corky, horizontal, explanate, reniform, subsessile,
azonate, finely pubescent, becoming smooth.

Pores from round to linear and labyrinthiform, the dissepiments always
obtuse and never lamellate.

It is a very common growth in Ohio, found on old logs of the sugar
maple. You will see the beginning of the growth in the spring as a round
white nodule which develops slowly. If the same plant is observed in
the summer it will be found to be gibbous or convex in form. It finishes
its growth in the fall when it has become explanate and horizontal,
depressed above and with a thin margin. When fresh and growing it is of
a rich cream-color and has a soft and velvety touch and a pleasant
fragrance. In Figure 355, showing the surface of the cap, the growth of
the plant shows in the form of the zones. Figure 356 shows the form of
the dissepiments. In younger specimens these are frequently round, much
like a Polyporus. There is one locality in Poke Hollow where the maple
logs are white with this species, appearing, in the distance, to be
oyster mushrooms.

_Daedalea quercina. Pk._

THE OAK DAEDALEA.

[Illustration: Figure 357.--Daedalea quercina.]

The pileus is a pallid wood color, corky, rugulose, uneven, without
zones, becoming smooth; of the same color within as without; the margin
in full-grown specimens thin, but in imperfectly developed specimens
swollen and blunt.

The pores are at first round, then broken into contorted or gill-like
labyrinthiform sinuses, with obtuse edges of the same color as the
pileus, sometimes with a slight shade of pink.

They grow to be very large, from six to eight inches broad, being found
on oak stumps and logs, though not as common in Ohio as D. ambigua. The
specimen in Figure 357 were found in Massachusetts by Mrs. Blackford and
photographed here.

_Daedalea unicolor. Fr._

Villose-strigose, cinereous with concolorous zones; hymenium with
flexuous, winding, intricate, acute dissepiments, at length torn and
toothed. The pores are whitish cinereous, sometimes f