Cornus swingii Manchester,
Xiang, Kodrul and Akhmetiev, Holotype from Horse Creek, Montana,
UF 18969-38375. An overall view of the leaf with nearly complete
lamina and petiole. Manchester, S.R., Q. Xiang, T. M. Kodrul and
M. A. Akhmetiev. 2009. Leaves of Cornus (Cornaceae) from
the Paleocene of North America and Asia Confirmed by Trichome
Characters. International Journal of Plant Sciences, 170 (1):
132–142. Fig. 2I.