Unfortunately, the data on which such values are based are not very reliable, and because of this, care has to be taken in both in interpreting them and in using them in practical situations.
dicotyledon: a member of the group of flowering plants characterized by having two cotyledons in each of their seeds. There are two main groups of flowering plants - the Monocotyledones or monocotyledons and the Dicotyledones or dicotyledons. They differ from each other in a number of important ways in addition to the number of cotyledons contained in their seeds. Some of these are summarized in the table.