Fig. 1

Images of plant species from our primary Experiment 1. (A) Pinus sylvestris close-up of spot where samples have been taken. (B) P. sylvestris male cones with pollen. (C) Lolium perenne indoor storage. (D) L. perenne close-up of flowers, arrows pointing at yellow open anthers (a) hanging down and white styles (s) standing upwards. (E) Artemisia vulgaris. (F) A. vulgaris close-up of fresh open flowers, arrows pointing at circular connected anthers (a) and unripe central style (s1) of a hermaphroditic flower and ripe style (s2) of a female flower.