Lloyd Mycological Writings V4.pdf - MykoWeb

SPORES HYALINE.
firm below. Pores medium large, about 2 mm. deep, with angular,
irregular mouths, white, discolored in drying. Spores globose, 6-8
mic., hyaline, smooth.
Fig. 665.
Polyporus leucospongia.
This is a remarkable species readily known by its very soft surface
flesh, which is so soft that to the touch it is like a piece of cotton.
It occurs on spruce in the mountains of California, and was first sent
to Europe by Harkness. His specimens were distributed by Ellis 1104
and Rabenhorst 3432, hence found in most museums. They write
Cooke's name after Polyporus leucospongia, though Cooke referred it
to Polyporus labyrinthicus (which no one knows) and never took the
trouble to change his label. Outside the Harkness collections, we have
seen but two specimens, one from Mrs. Whetstone, Minnesota, which
we refer here, though with some doubt, and a collection from Cuba,
Underwood, which was called Polyporus altocedronensis but is the
same as Polyporus leucospongia on comparison. Since above was
in type Overholts found the plant abundantly in Colorado.
Compare altocedronensis.
SECTION 87. CONTEXT, WHEN DRY, SPONGY AND LIGHT.
A. Pores large, sinuate.
POLYPORUS OBTUSUS (Fig. 666). Pileus sessile, large, often
six inches or more in diameter. Surface fibrillose, hirsute, rough, soft,
no distinct crust. Context (when dry) pale yellowish white, soft,
323