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. 2021 Jan 30;197(4):867–883. doi: 10.1007/s00442-021-04857-3

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© The Author(s) 2021

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Fig. 2 — The relationship between photosynthesis (P_N) and stomatal conductance (G_s) in ferns, cycads, ginkgoales (Ginkgo biloba), conifers, basal angiosperms, eudicots and monocots (Haworth et al. 2018b). Data points are the mean and standard error of ≥ 5 replicates. The black line indicates the line of best fit and the two grey lines either side indicate the 95% confidence intervals of the mean