Dipteronia americana (in part) Rhus malloryi is an extinct species of flowering plant in the sumac family Anacardiaceae.

[1][4] The plant community preserved in the Klondike Mountain formation is a mixed conifer–broadleaf forest with large pollen elements of birch and golden larch, but also having notable traces of fir, spruce, cypress, and palm.

[2] The coeval fossil species Rhus mixta is noted to have a more linear shape and distinct secondary vein structure.

The specimens were studied by paleobotanists Jack A. Wolfe of the United States Geological Survey, Denver office and Wesley C. Wehr of the Burke Museum.

[2] The etymology of the chosen specific name malloryi is in recognition of former chairman of the Burke Museum paleontology collections V. Standish Mallory.