Lloyd Mycological Writings V4.pdf - MykoWeb

SECTION 10.
Petaloides, velutinate, hirsute (smooth in one species). Pileus flabelliform or
spathulate, sessile, attached by a reduced base. As these plants do not have stipes,
but are merely reduced at the base, they should not be placed in the "stipitate"
section, perhaps rathei in the Apus section. But they are never truly dimidiate,
hence intermediate between the two sections. Several species normally dimidiate,
as Stereum lobatum and Stereum fasciatum often have similar attachment, and
might be sought here.
Fig. 563
Stereum involutum.
STEREUM INVOLUTUM (Lloydella) (Fig. 563). Pileus
spathulate, or suborbicular, attached by a reduced base. Upper surface
brown, velutinate with narrow, concentric zones. Hymenium
smooth, reddish-bay with a waxy appearance. A section shows a
thick (90 mic.), compact, even hymenial layer, very distinct from
subhymenial layer, which is much lighter color. There are a few
typical metuloids, thick, hyaline, rough, projecting but little. (Hence
it is a Lloydella).
Stereum involutum was named by Klotzsch (as Thelephora)
from Mauritius. It appears to be not infrequent in Africa, Australia,
and the Pacific Islands. It has a peculiar, hymenial appearance
which may be recognized at sight when once learned. The two
following, with the same hymenium, differ as to upper surface, but
for me are only forms.
STEREUM PROXIMUM. I made one collection in Samoa which I am
convinced is a form of Stereum involutum, although I have found no metuloids.
Otherwise it is quite the same as to peculiar, waxy, thick hymenium, color, attachment,
etc. The upper surface is more finely velutinate.
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