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New Essay: "Thismia americana, a Chicago Endemic or an Elaborate Hoax?" (with Laura Rericha)

"Some have suggested that the iconic Chicago-endemic, Thismia americana, a plant discovered by Norma Pfeiffer at 119th Street and Torrence Avenue in Chicago, is a legend based upon a hoax..." A new essay by Dr. Wilhelm and Laura Rericha (March 2018). It has been submitted to The Great Lakes Botanist.

Dr. Wilhelm’s Field Notes


Watch this page for information about Dr. Gerould Wilhelm's latest projects and research, plus upcoming and recent appearances.

New Essay: "Building a Loving, Healthy Home for a Tree"

"Of the 1879 plants native to the Chicago Region, only 110 (6%) can be classified as trees. Yet, most of us have a visceral affinity to trees that is significantly out of proportion to other groups such as shrubs, grasses, sedges, and wild flowers. People spend academic careers studying the matter. Bards wax poetically about them. Artists depict trees with special characteristics and moods in paintings. We like to sit under them and be near them. The "greening" of a landscape generally connotes planting them. Irrespective of the biome, peoples of the world generally cleave to trees---for whatever reason. So, how does our culture, here in the Midwest, manifest its love of trees? How might this love be more fulfilling for both us and the tree?" A new essay by Dr. Wilhelm (March 2018).

Dr. Wilhelm's study of lichens has been a life-long passion. Currently he is working on a new book, Lichens of the Chicago Region

Keynote speaker at 2018 Illinois Indigenous Plants Symposium

Dr. Wilhelm is the featured keynote speaker at the Indigenous Plants Symposium April 13-15, 2018 – hosted by the Southern Chapter. Events will be held at John A. Logan College in Carterville, IL and will include a native plant sale with Green Earth.

Preview of Dr. Wilhelm's work on a new bookLichens of the Chicago Region. Shown here is page 1 of his current draft. To see much more, link to the pdf:

Link to Recent WBEZ Chicago Radio Interview

Dr. Gerould Wilhelm and Mike MacDonald talk about the new book "Flora of the Chicago Region: A Floristic and Ecological Synthesis". The interview aired January 23, 2018.