Project members looking to learn more about the plant galls of California have been frustrated by the difficulty of obtaining copies of Ron Russo's out-of-print 2006 guide and the absence of updates. So it's terrific to read that Princeton Field Guides will be issuing Russo's Plant Galls of the Western United States in late March of 2021.

The new guide will cover 536 species of plant galls found west of the Rockies. It will include expanded coverage of desert galls and SW oak galls and over 120 species new to science.