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In vivo pollen germination timing in angiosperms. (A) Time reported for pollen germination to occur (range: 1 min to 60 h). (B) Time to pollen germination as a proportion of the total time from pollination to fertilization (progamic phase). In both graphs, classes on the x-axis represent the number of hours (≤h) reported for the minimum duration of the progamic phase. The number of genera in each class is shown at the top. Asterisks represent Austrobaileya. Bars are standard errors.
