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Published online by Cambridge University Press: 31 May 2012
A fleshy leaf-tissue gall was found on terminal twigs of Populus Monilifera(?) June 18, 1892, a few miles to the north of Ojo Caliente, in Southern Socorro county, New Mexico. This gall is somewhat similar in method of formation to one that has been found on Rhus microphylla, which possesses a cock's-comb-like appearnce.