Lloyd Mycological Writings V4.pdf - MykoWeb

CONTEXT WHITE OR PALE. PORES COLORED.
POLYPORUS ELMERL Pileus thin, dimidiate, with ochraceous surface, no
distinct crust. Flesh very thin, 1-2 mm., white, brittle. Pores minute, round,
isabelline, darker than the flesh. Spores subglobose, 3>^-4 hyaline, with surface
minutely but distinctly rough. This is a rare species, only known from a few collections
in the Philippines. The general appearance of the pores is that of Fomes
lignosus or nearer the color of Poria undata. The plant is much more closely related
to Polyporus zonalis than to others of this section.
SECTION 89. THICK, UNGULATE PLANTS.
POLYPORUS AMARUS. Pileus ungulate, often large, 10-20
cm., broad, 6-12 cm., thick. Surface pubescent when young, rimose
and chalky when old. Context pale yellowish, hard and brittle when
dry. Pores dark brown in dried specimens, 1-2 cm. long. Mouths
round, ]^-\ mm. When growing, the pores are yellow or greenish
yellow, turning reddish brown in drying. In the dried specimens they
are much darker in color than the context. Spores 5x8, elliptical,
hyaline, smooth.
A western species that was named and described by Hedgcock.
We have drawn largely from the description. It is supposed to be the
cause of the "pin-rot" in the incense cedar of the Pacific coast. Dr.
Von Schrenk described this disease and named the fungus Polyporus
libocedrus, but did not describe it formally ; and he advises us the types
are destroyed. We therefore adopt Mr. Hedgcock's name, believing,
however, it would have been better had Hedgcock adopted Von
Schrenk's name. Mr. Long tells us he has noted the plant abundantly
in California, but he failed to send us any specimens. All we have is
a little slice of the type.
SPECIMENS. California, Geo. S. Hedgcock, a slice of the type.
Compare libocedrus.
SECTION 90. THIN PLANTS, SOMEWHAT GELATINOUS WHEN FRESH.
This (in part) forms the "genus" Gloeoporus.
POLYPORUS DICHROUS. Pileus thin, dimidiate, usually
imbricate. Surface smooth, white, no crust. Flesh white, thin, firm.
Pores small, dark purplish brown, gelatinous. Spores allantoid,
1^x4-5, hyaline, curved.
Polyporus dichrous is a very common species in the United
States and a rare one in Europe. It grows on frondose wood, imbricate,
and quite extensive. When fresh the pores are gelatinous, and can be
easily stripped away from the flesh. On this account the plant was
erected into a new genus called Gloeoporus, which is maintained by
various writers. When dried the gelatinous nature of the pores is not
so evident. While it is rare in Europe, the plants are the same as the
common American plant. In American tradition the plant has passed
as Polyporus (or Gloeoporus) conchoides, which is partly right but
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