Leaf, under side, distal half conic-attenuate from the bulbous or
sub-globular proximal half. Covered with long, coarse trichomes, the
longest being half the length of the gall. Trichomes brown. Tip of
gall generally darker than rest. 3-4 mm. high, 2-3 mm. wide. Cavity
sub-spherical somewhat depressed at right angles to axis of gall. Walls
relatively thick, especially the proximal part. Apical canal evident in
median longitudinal section. Gall attached by short and broad pillar of
tissue extending from the leaf into the fleshy base.
Gypsum, Ohio, August, on _H. ovata_.
Type specimens at Ohio State University.