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The response of the CO2 compensation point of A (Γ) as a function of measurement light intensity in the C2 species Homolepis aturensis, Neurachne minor, Steinchisma hians, the proto-Kranz species Steinchisma laxum, and the C3 species Dicanthelium oligosanthes and Panicum bisulcatum. Values of Γ were determined from the A/C i curves used in the sequence of measurements to determine C*. Symbols are means ±SE (n=2–6), except where no error bar is shown, in which case n=1.
