Lloyd Mycological Writings V4.pdf - MykoWeb

CONTEXT AND PORES WHITE OR PALE.
POLYPORUS FUMOSUS (Fig. 647). Pileus thin, smooth, with
dull, soft surface. Context, when dry, hard, firm, but brittle; white
when fresh, darker when dried. Pores small, round, irregular, white at
first, but becoming fuliginous, or dark, in drying. Spores 1]/2. x 5 mic.
Fig. 647.
Polyporus fumosus.
Polyporus fumosus is quite a frequent plant, usually on willow.
It is the same, in fact, as Polyporus salignus, with small pores. When
it is in its prime, and growing, it is white; but on drying it turns more
or less smoke colored. It is often confused with Polyporus adustus,
and many specimens of Polyporus adustus in the museums are labeled
as being Polyporus fumosus. Dried specimens may be confused sometimes,
but the difference is marked in the fresh plant. Polyporus
adustus has deep, smoke colored pores when growing; Polyporus
fumosus has white pores, turning smoky in drying, but when dry
rarely deep enough in color to be confused with Polyporus adustus.
With Polyporus salignus, however, the case is different. It is the
same plant as Polyporus fumosus, with larger pores. When growing
white, it is usually called Polyporus salignus. In drying or after it
turns "smoky" it becomes Polyporus fumosus. When fresh, Polyporus
fumosus has a pleasant odor, as noted by Persoon.
Compare apalus, cineratus, demissus, pallescens, pelleporus, rhinocephalus, simulans, subsimulans,
terebrans.
POLYPORUS SALIGNUS. This in the original idea was a white plant growing
on willow, the other characters the same, but with large, sinuate pores. In
context and color changes it is the same as Polyporus fumosus, and no distinct line
can be drawn between it and Polyporus fumosus.
Compare albus, imberbis, puberula.
POLYPORUS HOLMIENSIS (Fig. 648). Pileus imbricate, thick, subunguliform,
hard. Flesh white, with dark lines running through it, also a dark line
between the pores and context. Pores and color characters as in Polyporus fumosus,
of which it is only a form.
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