Lloyd Mycological Writings V4.pdf - MykoWeb

CONTEXT AND PORES WHITE OR PALE.
POLYPORUS BOREALIS (Fig. 668). Pileus sessile, dimidiate,
or sometimes growing more upright and reduced at base. Surface
hirsute-tomentose, particularly when young; when old, more matted.
Context white, tough, fibrillose, spongy when fresh, drying light
weight and fissile. Pores at first round (Fig. 669), angular with thick
walls, becoming, when mature, long, sinuate, daedaloid (Fig. 670).
Spores elliptical-compressed globose, 5x6 mic., hyaline, smooth.
Fig. 668. Fig. 670.
Polyporus borealis. Fig. 668, young pores (X6). Fig. 669, old pores (X6).
In Europe this plant is well named, occurring in large quantities
in northern Europe, always on Abies. While a plant of common record
in more southern Europe (England), we doubt if they have it in
England, excepting perhaps in Scotland. In the United States we
have never seen it abundant, but it occurs in northern localities, and
we have one collection from Tennessee.
As one first begins to notice Polyporus borealis in Sweden, it is a
round tubercule, then triquetrous and thick as it begins to develop
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