Lloyd Mycological Writings V4.pdf - MykoWeb

SPORES HYALINE.
This is based on a collection from A. J. T. Janse, Natal, Africa.
We call it Trametes, where we think it should be classed, but mention
it in the section of Polyporus on account of its general resemblance
to the Polyporus species included. It closely resembles Polyporus
durus, but is of a lighter shade of color, and of a different texture.
SECTION 94. CONTEXT OLIVE
Fig. 680.
Polyporus supinus.
POLYPORUS SUPINUS (Fig. 680). Pileus dimidiate, imbri-
cate, often resupinate behind, usually with a thin margin. Surface,
when fresh, white, dull; when young, minutely pubescent, soft to the
touch; when old often spotted with red spots behind. Context dark
olive (Dresden brown), hard, firm. Pores minute, 2-4 mm. long, with
isabelline tissue and adustus mouths. Spores 4x8 mic., oblong,
hyaline, smooth, with granular contents.
A frequent southern species. It occurs in southern United States, West Indies,
and South America. It does not occur in the East. In Florida it was the most
common Polyporus we found, and we gathered it in abundance, usually on oak.
When fresh it is usually white, sometimes with reddish spots behind; and rarely the
surface is entirely reddish brown, when it becomes Polyporus Yalenzuelianus. We
also found it entirely resupinate over a large extent, with no sign of a pileus. There
is no trouble in recognizing the fresh species, from the peculiar dark olive (as most
people would call it) context. In the old herbarium specimens this feature is masked;
not only the surface of the pileus becomes dark, but the context loses its peculiar
olive tint, and the entire plant becomes somewhat concolorous. It is very hard to
recognize the old, historical material in the museums of Europe. The next species is
in reality the same as this, but it is much rarer and as it grows is quite distinct. The
usual plant is white, with sometimes individuals that are red spotted behind, but
the collection that we made of the next form had the pileus entirely reddish, even
the young specimens. We have been puzzling for a name for this common plant
for years. The tradition in American mycology was that it was hemileucus, and so
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