This guide applies to the Chicago Region and is not complete for other regions. Disclaimer

Guide to Paxillus

To date we only have Paxillus involutus recorded for the Chicago area. Paxillus atrotomentosus is a brown velvety species associated with conifer wood. Paxillus vernalis is a look-alike to P. involutus that is found with aspen. Other species of Paxillus have a short lateral stem or lack a stem and grow on wood; the underside may be wrinkled ridges instead of gills.

Key to Species
Key ChoiceGo to
1a. Cap margin strongly inrolled. Stem central to off-center. Found on the ground with various trees including oak. May also be found in bogs with spruce. Paxillus involutus