72 THIRTIETH REPORT ON THE STATE MUSEUM. 
but when growing upon small trunks or branches, which seem 
to be a favorite habitat, and which it partly surrounds or clasps 
by its base, it becomes somewhat reniform. Sometimes it is 
quite orbicular, in which case it usually occurs on the under 
side of a branch to which it is attached by its vertex, or on the 
upper side to which it is attached by an eccentric or the central 
point of the hymenium. It is normally and repeatedly zonate 
and more or less sulcate, with the zones usually quite narrow 
and not differing very much in color from the general hue of 
the pileus. Slight radiating ruge or elevations are generally 
present, and these, in passing over the furrows, sometimes ren- 
der the surface rough or scabrous. This roughness is occasion- 
ally increased to such an extent that the surface becomes very 
uneven, especially toward the base. Not very rarely a kind of 
tough appressed and at length hardened and glabrated tomen- 
tum overspreads a part or the whole of the pileus and thus con- 
ceals to a greater or less extent the zones and radiations. This 
coating can sometimes be separated from the pileus in scales or 
flakes like a kind of crust. It is most often limited to the basal 
or central portions of the pileus. Its unequal distribution gives 
a rough and unnatural appearance to the plant. In some speci- 
mens the pileus is dull and opaque, in others it is smooth and 
shining. In size it occurs from half an inch to three and a half 
inches in diameter. The substance is usually rather thin, 
sometimes much thinner than the hymenium. The upper 
surface is plane or slightly convex, though specimens are not 
wanting in which the pileus is much thickened behind so that 
it approaches an ungulate form. I have seen it in different 
individuals both umbonate and depressed at the base, but these 
are rare and exceptional forms. In color there is considerable 
diversity, some specimens being whitish, or gray, others having 
a dark reddish-brown or chestnut color. Between these ex- 
tremes there is a great variety of intermediate hues, but a kind 
of pallid wood-color, more or less tinged with rufous or cervine 
hues, prevails. The thin margin is usually concolorous, but 
sometimes in pale specimens it is more highly colored than the 
rest. Occasionally the whole plant assumes a ruddy hue in 
drying. The substance has a color similar to that of the surface 
of the pileus, but in dark specimens it is a little paler. 
The hymenium varies if possible more than the hymenophore. 
There are four typical forms which for convenience may be 
called lenzitoid, dedaleoid, trametoid and polyporoid. In the 
first the dissepiments are lamellee, here and there forked or 
dichotomously branched and sometimes slightly anastomosing, 
especially at the base. Such specimens would be referred to 
Lenzites. Inthe second the pores are unequal, some of them 
elongated and flexuous or labyrinthiform. Such specimens 
belong to Dedalea. In the third, rotund and straight elongated 
pores are intermingled and generally arranged in a radiating 
manner. These belong to 7rametes. In the fourth the pores 
