Lloyd Mycological Writings V4.pdf - MykoWeb

FUSCUS. CONTEXT BROWN.
This is a small species, peculiar in its angular shape, collected
by Jintaro Umemura, Nagoya, Japan, growing on Pasania. It was
carelessly published as Fomes angulus. I have also some sub-resupinate
specimens.
FOMES PUSILLUS. Pileus unguliform, 1 to 1^ cm. in diameter.
Surface with smooth, ridged, brown crust. Context cinnamon
brown. Pores very minute. Setae, none. Spores globose, hyaline,
5-6 mic., smooth.
A little species that was collected on stems of Zelkowa acuminata
by A. Yasuda, Japan. It is only known from this collection. It is
quite close to Fomes atro-umbrinus of Brazil, but crust is not black
and context is not so dark.
FOMES ATRO-UMBRINUS (Fig. 587). Pileus small, unguliform,
1 to IX cm - Surface with an intense, black, smooth crust.
Context dark brown. Setae, none. Spores not found.
This little species is hardly over a cm. in diameter. It is only
known from the Spruce collection, Brazil, at Kew. The best specimens
are found in the holomelanus cover.
Compare holomelanus.
D. Plants dark purplish black. Context dark brown, with a purplish shade.
FOMES MELANOPORUS. Pileus applanate (from 1 to 3
cm. thick), dark, almost black when old. Surface (in the type specimen
from Cuba) tomentose, sulcate, but in most specimens so referred
the surface is hard and smooth. Context dark purplish brown
(seal brown), hard. Pores minute, the color when fresh, dark "atropurpureus"
with velutinate mouths. The tissue color of pores is
darker than the context color. Setae, none. Spores hyaline, about
3x4 mic.
Probably a quite frequent species in most tropical countries.
It is one of the heaviest, hardest species. I have noted specimens
from Florida, Central America, West Indies, India, Malay, Java,
Madagascar, Philippines, New Caledonia, Japan. The type specimen
is distinctly tomentose, sulcate, but it either loses that feature when
it becomes old, or else the usual plant is not the same as the type.
Some specimens also have velutinate pore mouths in others this is
;
hardly noticeable. Fomes melanoporus is exceptional among the
Fomes species in its dark "atro-purpureus" color, exteriorly so nearly
black that MurriU's invention "Nigrofomes" would not be a bad
name for it if it needed a new name. The dark coloring matter of
the plant is soluble in lactic acid.
iCa ' Hen" Perrierdela Bathie ; Philippines, E. D. Merrill; Japan. A. Yasuda;
Compare melanoporoides, Cornu-bovis, endophaeus, phaenus.
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