Figure 298.—Boletus parasiticus.
Parasiticus means a parasite; so called because it grows on a Scleroderma. It is a small plant and quite rare.
The pileus is one to two inches broad, convex, or nearly plane, dry, silky, becoming glabrous, soon tessellately cracked, grayish or dingy yellow. Tubes decurrent, medium size, golden yellow.
The stem is equal, rigid, incurved, yellow within and without. The spores are oblong-fusiform, pale-brown, 12.5–15×4µ. Peck.
The tubes are rather large and unequal, and inclined to run down upon the stem.
This plant was found near Boston, Mass., by Mrs. E. B. Blackford and photographed by Dr. Kellerman. Captain McIlvaine says it is edible but not of good flavor. It is found in July and August.
Boletus separans. Pk.
The Separating Boletus. Edible.