1. Boletus felleus, Bitter Boletus.
2. Boletus alveolatus, Crimson Boletus.
3, 4. Boletus luridus, Lurid Boletus.
FIGURE 1 above is very much like Figures 2 and 3, Plate VII., of
Edible Mushrooms, from which it is easily distinguished by its bitter
taste and rosy tubes.
FIGURE 2 is a distinctively American species, and the authority for
suspecting it is found in the fact that all Boleti which have red or
red-mouthed tubes have been considered poisonous. Although valuable
for an illustration of the lurid Boleti, this variety is probably
edible.
FIGURE 3 is easily confounded with Figures 4 and 5, Plate VII., of
Edible Mushrooms, if attention is not paid to the color of the tubes.]
[Illustration: PLATE XII.