Morgani is named in honor of Prof. Morgan.
The pileus is one and a half to two inches broad, convex, soft, glabrous, viscid; red, yellow, or red fading to yellow on the margin; flesh white, tinged with red and yellow, unchangeable.
The tube-surface convex, depressed around the stem, tubes rather long and large, bright yellow, becoming greenish-yellow.
The stem is elongated, tapering upward, pitted with long and narrow depressions, yellow, red in the depressions, colored within like the flesh of the pileus. The spores are olive-brown, 18–22µ, about half as broad. Peck.
This plant is found in company with B. Russelli, which it resembles very closely. Its smooth, viscid cap and white flesh will distinguish it. Its stem is much more rough in wet weather than in dry. The peculiar color of the stem will help to identify the species. I found it frequently on Ralston's Run, near Chillicothe. It is found in many of the states of the Union. July and August.
Boletus Russelli. Frost.
Russell's Boletus. Edible.
Figure 306.—Boletus Russelli. One-half natural size.