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Concentration measurements for chlorogenic acid and thymol (bold) are from this study’s field sampling of nectar and pollen. Sample sizes are in parentheses. Concentrations of other phytochemicals were compiled through literature searches. Data are arranged in order of decreasing maximum concentration, first for sample types within compounds, and then by observations within a given sample type. SD: Standard Deviation. *Units are mean concentration by mass in ppm, except for values followed by a “%” sign, which indicates % of total volatiles (for compounds where ppm concentrations were unavailable).