Potentilla sp. [P gracilis added as a placeholder based on common observations in SNP]
Fusiform swelling on midrib and flower stalk. Sequioa National Park. Sept.
- LH Weld: (1957) Cynipid Galls of the Pacific Slope©
Reference: https://babel.hathitrust.org/cgi/pt?id=coo.31924018313555&view=1up&seq=70&skin=2021