Is the plant Decumaria a genus of more species than the plant Pachycereus?
Decumaria Decumaria, the woodvamps, is a genus of two species of flowering plants in the family Hydrangeaceae, one ("D. barbara") native to the southeastern United States, and the other ("D. sinensis") native to central China.
Decazesia Decazesia is a genus of flowering plants in the daisy family.