Cornus (Cornaceae)

Cornus endocarps from Almont have prominent rein ducts similar to those in the extant cornelian cherry Cornus mas (Cornaceae).
This material was illustrated recently in the following paper:  Xiang, Q-Y, Y-M Shui, and Z Murrell. 2003.  Cornus eydeana (Cornaceae), A New Cornelian Cherry from China—Notes on Systematics and Evolution. Systematic Botany 28:757–764.
Crane PR  SR Manchester and DL Dilcher  1990  A preliminary survey of fossil leaves and well-preserved reproductive structures from the Sentinel Butte Formation (Paleocene) near Almont, North Dakota.  Fieldiana Geol  NS, 20:1-63

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