Boletus illudens

Common Name: None

Synonyms: Xercomus illudens

Substrate: Ground

Location: Hardwood forests

Spore Color: Olive brown

Pore Color: Lemon yellow


There are several things to look for with this bolete. The first is reticulation on the stem. This should have a very widely spaced reticulation, especially close to the apex. Next, neither the stem or the pore surface should bruise blue. 

A final way to confirm your ID is to put a drop a drop of NH4 (ammonia) on the surface of the cap. It should flash blue-green and then resolve to a brownish-gray color, while leaving a greenish ring.


Boletus tenax is nearly identical, but has a more tapered stem, and more conspicuous, coarse reticulation.


Boletus illudens

Boletus illudens

Boletus illudens

9/11/12 - Paynetown SRA - Bloomington, IN

Boletus illudens

Boletus illudens

A closer look at the wide-spaced reticulation on the stem.

8/28/12 - Shades State Park - Waveland, IN

Boletus illudens

9/15/12 - McCormicks Creek SP - Spencer, IN