CRI is a 501c3 Non-Profit Organization







Be sure to keep an eye out under “Educational Offerings” for the next field seminar series being conducted in 2018 by Dr. Wilhelm on “Woodlands of the Chicago Region.”

After 15 years and over 100,000 hours of work, the book is finished and it's massive —
8.5" x 11” and 1350+ pages, with a spine of 2.75" and weighing in at 9 pounds, 12 ounces!


A tome for the ages — featuring nearly 2000 illustrations and 3200 maps, and the scholarship is off the scale! Shown here are views of the book’s laminated cover and the spine — we think you will agree it is gorgeous.


Flora of the Chicago Region:
A Floristic and Ecological Synthesis

is now available for purchase at It is also available at the Morton Aboretum bookstore. the book retails for $125 plus postage.

Cover photo of Bluff Springs Fen is courtesy of Mike MacDonald.

Purchase your copy!