These galls were mostly green, but this one was pink. Most leaves had no galls or were densely covered by 5-7 galls. This leaf had just one gall. Plants growing in dappled high shade under Lithocarpus densiflorus - Pseudotsuga menzesii woods.
Description: English: Rosa gymnocarpa at the UC Botanical Garden, Berkeley, California, USA. Identified by sign. Date: 9 June 2011. Source: Own work. Author: Stickpen.
